63KE5722 / SIERRA [TV 63 (59) cm picture]

• Flyback lines and coloured smears next to images. (+ extract of circuit diagram)
• A second after switch-on with mains switch a beep is heard in speakers.
• Colour saturation too low in 2B + CTI. (picture attached)
• Sawtooth on picture and hum. E4 on display at start up then normal channel. (picture attached)
• 140V only reaches 77V. With a power supply voltage of 180-250V only 77V. When disconnecting deflection lead approx 85V are set without a load. No voltage on pin 1 of optocoupler.
• Greyscale adjustment.
• Line BU heats up and blows. No line transformer or display and R3619, R3620 are burnt.
• No brightness or picture. (part of circuit diagram displayed)
• Starts up and switches off immediately. Display defective, no standby LED and power supply hums. (service info for SIERRA -63KE5722)
• PSU blows.
• Blank screen. (extract of circuit diagram attached) (63KE5722 tips)
• Raster IC TDA3653AQ constantly goes defective (sometimes after a week, sometimes 3 weeks). Voltages are correct. (with circuit diagram extract)
• Sparks from crowbar protection.
• Coloured half line. F3 appears in the display.
• 6.242MHz adjustment - Audio section.
• Can not be switched over by RC. RC OK.
• The power voltage increases, cannot be controlled with pot R3715. (part of circuit diagram displayed)
• Vertical line (only in cold conditions). (with circuit diagram extract)
• Line transformer whistles, no display.
• Poor convergence. in the centre. (+ extract of circuit diagram)
• Incorrect regulation of voltage on +140V line.
• No raster, green line in centre. Power supply OK. (with circuit diagram extract) (63KE5722 tip from SIERRA)
• No HV. (picture attached)
• Screen switched off at start up. Picture appears after 2 mins. Sound ok. Time base ok. (+ extract of circuit diagram)
• Starts up after connecting collector BUT12A to a safe GND. (extract of circuit diagram attached)
• Hum during switching. (extract of circuit diagram attached)
• Squealing from PSU. (picture attached)
• Horizontal line only. Deflection appears after several mins.
• When changing channels, picture is unstable and unsynchronized for a few minutes. (SIERRA - 63KE5722 information)
• Light band in top of picture.
• Line output stage does not function. The resistors R3619+3620 burn out spontaneously.
• Raster appears slowly. (picture attached)
• Incorrect display. TXT and lines disappear.
• Appliance may stop by itslef when warm. Impossible to start it up again. Also stops when warm if you zap to an inexistant channel without a module. Sound and picture present.
• No function. Appliance whistles, protective circuit switches PSU off. BU in the line deflection is defective. Display is dark. (picture attached)
• Distorted audio (on the left). (extract of circuit diagram attached)
• Does not function well. Programme numbers change spontaneously, switches to stand-by etc
• Dark screen. No sound. EHT present. 140V,13V ok. All voltages ok. (extract of circuit diagram attached)
• Squeaking line transformer power supply and no HT.
• Picture does not synchronise correctly horizontally. No sound. If appliance runs for approx 2 mins, synchonisation appears slowly but still no sound.
• PSU squeaks (overload protection). (+ extract of circuit diagram)
• Vertical jitter.
• On some program sites only the left yellow LED flashes. Does not store.
• No sound, display flickers (apparently in rhythm of audio signal). Picture is OK.
• VIP TXT decoder with SAA5230 or SAA5231. (+ extract of circuit diagram)
• Hum on standby. (picture attached)
• Washed out picture. (+ extract of circuit diagram)
• Poor vertical linearity, it improves as temperature increases.
• No sound or picture. Dark screen. EXT green light on. Scanning present. (+ extract of circuit diagram)
• Poor synchronisation. Muted audio. Line tearing.
• Picture shifts.
• No functions. (with circuit diagram extract)
• Blank picture. Picture begins to appear if left on for a long time, about two inches from the bottom of the screen. (picture attached)
• Display flickers. (63KE5722 tips)
• BUT becomes repeatedly defective.
• Vertical pass out at the bottom of picture. (picture attached)
• Unstable picture. intermittently. Noise in picture.
• No vertical synchronisation. when cold. (service info for SIERRA -63KE5722)
• Occasionally colour saturation. (extract of circuit diagram attached)
• Picture height flashes occasionally.
• Picture compressed at bottom and expanded at top of screen. White line in middle of screen. Usually ok when appliance is warm. (picture attached) (63KE5722 tips)
• Purity fault. (with circuit diagram extract)
• No start up. High pitch noise is audible.
• No raster from cold. Appears gradually from bottom of screen. (part of circuit diagram displayed)
• Poor picture. Tuning drifts.
• Teletext decoder adjustment.
• Connection of a loop system to the TV.
• Short hum at switch over. (+ extract of circuit diagram) (service info for SIERRA -63KE5722)
• No audio. Flashing display. (extract of circuit diagram attached)
• Deprogramming at switch off.
• No audio (intermittently). (+ extract of circuit diagram)
• Hum in HF sound. Ok in scart.
• Set hiccups. (part of circuit diagram displayed)
• High voltage BUT11 blows after about 5 minutes. (with circuit diagram extract)
• Low audio. at high volume. (part of circuit diagram displayed)
• Dark screen. No brightness.
• Except for small stripes on the bottom, picture is blank. Intermittently picture appears slowly for 2 mins from the bottom up.
• Muted audio. intermittently. (part of circuit diagram displayed)
• Bass control is insufficient. (+ extract of circuit diagram)
• During scart switching, terrestrial channel can be seen on the background. Snow on untuned channels. (part of circuit diagram displayed)
• The picture is not straight (vertically). (+ extract of circuit diagram)
• Vertical line at switch on. When warmed up, a black band of 7 or 8 cm appears in middle of screen. Then everything OK. (63KE5722 tip from SIERRA)
• No display. Contrast, colour, sound cannot be adjusted.
• In safety mode. In low tension arcing then line BU blows.
• At the beginning the picture always disappears for a short time as if the channel had also disappeared for a short time. (with circuit diagram extract)
• No start-up. when cold (intermittently).
• If cold, it detunes in VHF, horizontal line in picture.
• BU508AF defective, changed but heats up abnormally. Standby light flashes.
• Hyperband adjustment.
• Whistling at the beginning. Black screen or stops after a while when it starts up. (part of circuit diagram displayed)
• TV starts and displays E3. Front controls and RC do not function. (with circuit diagram extract)
• Button for on/off switch.
• Horizontal white line. Black screen at switch on. Picture appears after 45 sec.
• No function, slight spot of light on screen.
• Vertical collapse. (extract of circuit diagram attached)
• How to programme standart values after battery replacement. (63KE5722 tip from SIERRA)
• PSU does not work correctly. Voltage runs out of control to approx 170V and then PSU pulsates. F3 appears in the display before the pulsating.
• Memory contents (X2402) change at random.
• No picture. Sound, high voltage and other functions are ok. (extract of circuit diagram attached)
• The power supply is low.
• Teletext faults. Characters wrong.
• Black picture after switching to teletext. When switching back the picture slowly comes back. (extract of circuit diagram attached) (63KE5722 tip from SIERRA)
• Protection circuit active (set hiccups). (with circuit diagram extract)
• No Nicam sound. All other fm sound ok. (part of circuit diagram displayed)
• Hum in standby. No errors determined while operating. (picture attached)
• No picture but high voltage. The line transformer whistles.
• No vertical or horizontal synchronisation. B/W picture. Cracking from loud-speakers at switch on. (extract of circuit diagram attached)
• Programming the microprocessor (MAB8461/W155).
• Low audio.
• Picture is blank, appears after several mins with vertical fault (linearity or height).
• With 2B ECO, IIC clock audible at min. volume. (63KE5722 tips)
• Receives all the UHF channels. VHF channels are memorized, but picture only from several UHF channels. (with circuit diagram extract)
• Resistors 3619 (56R) and 3620 (56R) are burnt.
• Stripes in picture. at top.
• Picture is split and black and white.
• "E3" is displayed and 140V power supply is low. (with circuit diagram extract)
• Intermittent picture, first OK, then snow.
• Page header suppression. (63KE5722 tip from SIERRA)
• Supply overloaded (set peeps). (with circuit diagram extract)
• Line transformer fails. (63KE5722 SIERRA repair tip)
• Memory loss. intermittently. (+ extract of circuit diagram)
• Fuse 1651 and BUT12A (Ref:7687) are defective. (+ extract of circuit diagram)
• Only partial picture at bottom of the screen. (+ extract of circuit diagram)
• Stops and twitches after short time.
• Horizontal line. on upper half screen.
• High voltage BU fails constantly.
• No picture, no sound. After 5 mins picture with line sync problem and no sound. After 10 mins colour appears on picture but still no sound. (with circuit diagram extract)
• Display flashing. Picture reduced to bottom area.
• Failure of line output stage. (part of circuit diagram displayed)
• The picture does not stand still, looks as if its laying next to a station. (+ extract of circuit diagram)
• No switching to standby. Red LED on. Lines cave in. Appliance hums. Picture present. Can be switched on again with the RC and runs ok.
• When the volume is loud the picture is wavy vertically in rhythm with the sound. (+ extract of circuit diagram)
• Tuning drifts. when cold.
• Brightness trembles at start up for approx. 15 mins or on lighter backgrounds. Then everything returns to normal. (with circuit diagram extract)
• Green flyback lines on a dark picture. (picture attached)
• Flickering picture.
• Failure of line output transistor. (picture attached)
• All voltages on the secondary side are too low. U instead of +140V only 80V. (+ extract of circuit diagram)
• CH LED flashes. Various unprompted functions.
• Dim picture. No contrast control. Audio OK . (with circuit diagram extract)
• Blue haze over picture. (with circuit diagram extract)
• Picture flashes and sound warbles. (63KE5722 tips)
• Horizontal white line in middle of screen. E4 on display.
• No E-W correction. Can't be adjusted.
• No or intermittent start-up. (63KE5722 SIERRA repair tip)
• No function. After switching on protective circuit responds. Appliance beeps quietly. (picture attached)
• When switching on, channel 3 or 9 comes on but on rare occasions also 1.
• Does not stop at channels during automatic search.
• Picture shrinks when brightness is set at max level.
• Picture with horizontal stripe, then it disappears after short while.
• No or poor tuning of offset channels. Loss of colour.
• Poor picture. Horizontal lines.
• Picture tearing when pressing the sound with sharp hum in the loudspeakers. Occasionally no sound or crackling at the start. (picture attached)
• Lower sound via scart with Canal Plus or with VCR.
• No analog functions. Audio balancing LED (25CE4570) is lit.
• Black bar. at top. OK after a while . (extract of circuit diagram attached)
• The sound is broken up by scart or by the tuner.
• Option code lost. (63KE5722 SIERRA repair tip)
• No start-up. intermittently. PSU whistles.
• After replacing line transistor appliance begins to whistle. Line transistor fails again immediately.
• Dark screen. E4 on display. (with circuit diagram extract)
• Switches to protection mode. intermittently. PSU whistles.
• Linearity fault. Approx 10cm of the picture is missing below. (+ extract of circuit diagram)
• At the bottom of the screen 15mm of picture foldover.
• Poor synchronisation. when cold.
• Channel 52 is indicated on all stations although the correct channel has been entered. (part of circuit diagram displayed)
• No brightness variation. Does not memorize.
• Sound but no picture, horizontal bar 2cm from the top of the tube. The picture appears after working for a few mins. (part of circuit diagram displayed)
• Repeated failure of T7687 (BUT12A). (with circuit diagram extract) (SIERRA - 63KE5722 information)
• Picture and sound hum for 10 mins. Power BU blows one time out of ten. (part of circuit diagram displayed)
• No deflection adjustment. Falls from max to min.
• At switch on BUT12 and fuse blow. (+ extract of circuit diagram)
• No raster. when cold. (+ extract of circuit diagram)
• No picture or sound. Goes to safety mode. Whistling. Line transformer ok. (extract of circuit diagram attached)
• Switches off by itself. after a while. (with circuit diagram extract)
• 140V goes up to 300V. Line output transformer immediately goes defective. (+ extract of circuit diagram)
• Picture pumps/flashes, buzz in sound. (extract of circuit diagram attached)
• Power supply ticking fast in standby and flashing LED. Starts up from standby and works fine.
• Chroma sub-carrier oscillator adjustment.
• Memory does not store brightness, contrast, colour and sound. (picture attached)
• Protection mode activated. (extract of circuit diagram attached)
• Line compression in upper picture part causes brightening of picture. Bright stripe.
• Faulty display operation.
• Approx 5-10 secs after switching ON, image is unsynchronised. After that period all functions OK. Same problem after each channel switching.
• Picture fades and sound hums. (part of circuit diagram displayed)
• Wobbling picture and whining sound depending on picture content.
• Starts up, but shuts down immediately (Standby). Process is repeated. Numbers intermittently run through program display.
• Wavy picture.
• Picture varies when volume high. (+ extract of circuit diagram) (63KE5722 SIERRA repair tip)
• Occasionally the appliance switches off or does not function at all. The power unit hums. (with circuit diagram extract)
• Line output transistor is defective and thyristor 6698 goes into safety mode.
• Poor reproduction of copy protected VHS tapes. (picture attached)
• Distorted audio. (+ extract of circuit diagram)
• Vertical line. (with circuit diagram extract)
• Static discharge. (+ extract of circuit diagram)
• E/W fault. (part of circuit diagram displayed)
• Horizontal line, broader than a picture line. (extract of circuit diagram attached)
• No VHF channels.
• Whistling from PSU.
• Error codes. (with circuit diagram extract)
• Horizontal line at start up then raster amplitude develops slowly. Which IC is the raster generator ?
• Loss of picture when switching to certain programmes.
• BUT in PSU makes a S/C if chassis is tapped.
• No start up. Standby LED does not light up.
• Safety test after repair.
• Power supply can only be controlled between 145V and 160V. (extract of circuit diagram attached)
• Standby light appears for a sec then nothing. The CTV has no sound or picture. Battery is ok. Voltage on the collector of the transistor is ok. (+ extract of circuit diagram)
• No MONO audio. STEREO OK .
• BU508 fails repeatedly. (part of circuit diagram displayed)
• No picture. intermittently. (part of circuit diagram displayed)
• R3620 and R3616 are burnt. Resistors are in the RC-section 140V to the line transformer, collector 2SD1577. Transistor is ok, no s/c can be measured.
• Reduced vertical deflection. at bottom.
• Horizontal transistor fails.
• Crackling from speakers, especially after switch on.
• Intermittent colour. when cold. (extract of circuit diagram attached)
• No channel memory after disconnected from mains. (with circuit diagram extract)
• Switches off by itself. after a few minutes. Squealing noise.
• No picture. Audio OK . (+ extract of circuit diagram)
• Black vertical bars (approx. 20cm wide) on the top of the picture. At times only vertical white stripe a t the bottom. No vertical deflection.
• Fuse 2A blows, BUT12A OK. (with circuit diagram extract)
• No tuning from Band 1 and 3.
• Picture disappears and comes back progressively or takes 30 minutes to come back. Black screen. Sound OK.
• No picture. Bright , green stripes in picture. Sound available.
• Overvoltage protection is on (from AG 04).
• Picture foldover, black striations in picture, especially in high channel range.
• VHF fails or moire effect. (Possibly knock sensitive].
• Tuning drifts. (with circuit diagram extract) (63KE5722 tips)
• Checking the power supply. (with circuit diagram extract) (63KE5722 SIERRA repair tip)
• Bars in picture.
• Adjusting option (from AG06).
• TS7687 fails again. (+ extract of circuit diagram)
• BUT11AF has blown, replaced then nothing. No power supply. BUT11AF(7687) already changed twice in four months. (extract of circuit diagram attached)
• Picture shrinks and controls no longer adjust sufficiently when warm. Functions correctly for 15 mins when cold. Line transistor overheats and sparks. (picture attached)
• Switches to protection mode (intermittently).
• Frequent breakdown of circuit transistor 7687 (BUT12A) of SOPS power supply.
• No UHF and/or VHF and/or sound.
• Excessive red. Flyback lines.
• Excessive brightness. (with circuit diagram extract)
• Error message F6 appears on display.
• Tunes channels only after a while.
• Picture appears after 5 to 10 mins then stays normal after that.
• No +140V HT supply and whistling from power supply.
• No STEREO.
• Cramped frame horizontally and vertically. (part of circuit diagram displayed)
• Pincushion distortion. on sides. Excessive horizontal size. Knock sensitive. (extract of circuit diagram attached)
• Cut-off adjustment.
• Picture vertically inverted in middle of screen.
• TV does not start up. Power supply whistles when connecting D6644, no base signal on line transistor. If you lift D6644, base signal ok but displays F3.
• Picture switches periodically to black/white, tick in picture and sound (approx. 10 sec. on sportnet). (extract of circuit diagram attached)
• Storage of the basic value data for brightness, contrast, colour and volume is lost after switch off with the mains switch.
• Poor RC sensitivity.
• Blurry picture.
• Either commands are blocked intermittently, IC7830 starts up, or occasionally small interruptions in the sound and picture or the PSU pumps now and again. (extract of circuit diagram attached)
• Slow build up of top part of picture. (with circuit diagram extract)
• Capacitor 2617 S/C.
• Red, green or blue flyback lines through the picture. (picture attached)
• Negative picture. Flyback lines.
• Black bar at bottom, or no raster. (part of circuit diagram displayed)
• No picture (when cold).
• FBT BU (7618) is defective. (+ extract of circuit diagram)
• The store is lost completely (colour, brightness, etc.). The programmes are lost. (part of circuit diagram displayed)
• Picture shaking for a few secs when warm, then frame becomes black.
• Black screen. (extract of circuit diagram attached)
• Linearity and vertical centering are defective. (picture attached)
• Adjustment memory is lost when using green key (preferential adjustments) from front panel or RC. All adjustments are at 0 level and picture is missing.
• At first BUT12 and T7686 defective. (picture attached)
• Buzzing from PSU. in standby.
• Picture is visible on left and right. Drop out bars in the middle. (picture attached)
• Display does not show 00-20 and 70-99. Only nos. 21-69 are shown and can be tuned.
• Only a few characters appear on teletext. (picture attached)
• Picture appears slowly. (+ extract of circuit diagram)
• Screen is slightly red with red flyback lines. Appliance ran for 2 weeks then green screen.
• No channels. No decoder function. intermittently.
• No picture. No audio. HV OK. . (SIERRA - 63KE5722 information)
• Frame fault when warm. Light line or band on approx 15cm starting from top of screen.
• After operating for sometime, the appliance switches off. D6490 is open circuit. (with circuit diagram extract)
• Dark screen. Reduced horizontal size. at top.
• Non-linear picture on upper side. (picture attached)
• One colour missing. (+ extract of circuit diagram)
• On certain stations,a different channel can be seen, blue and yellow waves appear on the picture.
• Max line amplitude, max E/W correction, no adjustment possible. (part of circuit diagram displayed)
• Rattling in standby mode.
• The picture is horizontally unstable. (part of circuit diagram displayed)
• Excessive green. Flyback lines. (part of circuit diagram displayed) (63KE5722 SIERRA repair tip)
• No functions. Standby LED lit .
• The picture is wobbly. (service info for SIERRA -63KE5722)
• No TXT.
• Dark picture or half of picture is bright and half dark. (picture attached)
• When changing the bands, ie from band 1, 4 or 5 to 3 or interband S1-10 there is sometimes no picture.
• Shuts down. after start-up.
• PSU beeps.
• No colour.
• Crackling "tick" in first half hour. No display during tick then display switches to channel 1.
• Wow and flutter on French channels.
• Picture is disorderly and unstable, especially horizontally.
• No channel search. Blurred picture, starts from program site 0.
• Dead. At power up slight whistle in FBT. (part of circuit diagram displayed)
• No sound. Stations seem to run away. (+ extract of circuit diagram)
• Horizontal line. at top.
• No sound via HF and AV. (+ extract of circuit diagram)
• Dark picture. (part of circuit diagram displayed)
• BUT18AF blows even when power transformer replaced. (with circuit diagram extract)
• Stuck in standby. (extract of circuit diagram attached)
• Bracket under line transformer.
• Unsynchronised picture 5-10 secs after switch ON. Same problem after each channel switching. Functions OK.
• Knocking on the chassis is causing a short. The chassis has been resoldered completely.
• After one or two hours picture disappears, sound OK only blank dark raster.
• R3619 and R3620 burn out spontaneously. (picture attached)
• Zigzags in picture and hum in sound. (extract of circuit diagram attached)
• Option adjustment.
• Commands of the remote control do not function but operating the appliance manually is ok. (service info for SIERRA -63KE5722)
• Teletext shakes vertically. When switching channels the top of the screen momentarily moves horizontally.
• Fuse 1657 is defective and no picture.
• No raster. Audio OK .
• Picture still visible in standby. Sound and display inactive. (picture attached)
• White saturation with flyback lines.
• There is no picture or a bad picture with certain programmes.
• After replacing defective BUT12 power supply sings for a short time. If you pull out the deflection plug the fault is still there. If you measure for 140V only 13.5V are present. Horizontal power transistor has already been replaced. (SIERRA - 63KE5722 information)
• BUT 12A is defective.
• Reduced vertical size of image at top and bottom. Cannot be adjusted to normal.
• R3654 is defective.
• No sound and no video. Video and sound go via scart. Picture is unstable and runs through. (+ extract of circuit diagram)
• No horizontal deflection.
• Repeated failure of the line output transistor (7618), and or triggering of the thyristor (6698). (picture attached)
• Hum in audio. (+ extract of circuit diagram)
• There is radiation on the channel selector.
• Back up battery fails regularly.
• White stripes in picture for 2-3 minutes. (with circuit diagram extract)
• Vertical foldover at bottom.
• Dark screen, CAD functions, the channels are towards 80. No memorization.
• Top half of the screen slowing becomes a normal picture. (extract of circuit diagram attached) (63KE5722 tip from SIERRA)
• No E/W correction. (with circuit diagram extract)
• R3638 and 3639 fail.
• Whistling. (+ extract of circuit diagram)
• Poor audio. Crackling audio. (picture attached) (service info for SIERRA -63KE5722)
• Black picture at first then white at the top. Sound is fine and sometimes a picture after approx. 30 seconds. (picture attached) (63KE5722 tip from SIERRA)
• Change of Pal/Secam for Middle East and Morocco.
• Sometimes picture is blanked out at beginning of operation. (part of circuit diagram displayed)
• VHF channels cannot be selected, jumps from UHF channel 69 to channel 21.
• Sometimes appliance switches on and occasionally it goes to SAFETY mode.
• No audio. Picture OK .
• The stand-by LED on the remote control often flickers without function. The sound increases and the display shows F1 or F2. (picture attached)
• Top of picture is stretched. Raster defective. (picture attached)
• Occasionally no command or dropout of sound/picture. (with circuit diagram extract)
• Insufficient picture height, rises slowly. Is fine after a few minutes. (picture attached)
• Only a beep audible at start-up.
• Circuit cloche adjustment.
• Red tinge over picture. (+ extract of circuit diagram) (SIERRA - 63KE5722 information)
• Intermittent audio and picture. Intermittent audio and picture. (picture attached) (63KE5722 tips)
• Slow start-up.
• With brightness at max., raster cramps. (extract of circuit diagram attached)
• Lacks height then slight clicking. Slight whistling from the line transformer. BU508AF (7618) is defective. Replaced but heats up and blows. Periphery appears to be ok.
• R369 and R3620 burn at switch on, D1577 goes S/C and transistor heats up. (+ extract of circuit diagram)
• RF radiation affecting band 2.
• No audio. via tuner. OK via SCART .
• Bright line in the to third. It disappears if appliance is warm. (with circuit diagram extract)
• Stereo signal disappears. (189,25MHz) only with reception on channel 7. (SIERRA - 63KE5722 information)
• Picture is considerably reduced, sometimes to a horizontal line. Then picture spreads out normally only to disappear after a certain amount of time.
• Black screen. Audio OK .
• Black picture. (63KE5722 tip from SIERRA)
• Only one horizontal stripe. (extract of circuit diagram attached)
• Horizontal synchronization adjustment.
• U140 ok with mains 160V, with 220V mains control range U140 is 145V and more. (+ extract of circuit diagram)
• Screen is dark, sound functions or picture only appears after picture tube has heated up for a long time.
• Unacceptable heating time of older picture tubes. (+ extract of circuit diagram)
• Only half of picture is visible on bottom side. (part of circuit diagram displayed) (SIERRA - 63KE5722 information)
• Occasionally no start up or only after an extended switching on period. (picture attached)
• Programming of the EEPROM after replacement.
• Low brightness. Low contrast. (with circuit diagram extract)
• No contrast control. Flyback lines. (with circuit diagram extract)
• The picture has a blue glow. (+ extract of circuit diagram)
• No tuning in switching from UHF/VHF.
• Memory is erased. (extract of circuit diagram attached)
• Grey picture when contrast and brightness are at maximum. No sound or picture via scart.
• In AM sound slight nasal sound and buzz.
• Only UHF functions. (63KE5722 tips)
• Linearity fault in top part of picture (only in cold condition). (with circuit diagram extract)
• No sound in Stereo/Dual. (part of circuit diagram displayed)
• After some time the appliance goes into standby. During channel search the numbers run through the display very quickly and the appliance remains in stand by.
• Ground noise in sound. (with circuit diagram extract)
• No picture, no sound, all three mains transistors are defective. (extract of circuit diagram attached)
• No shutdown with RC. RC OK. (part of circuit diagram displayed)
• Picture deflection is too weak at the start, however gets better after warming up. (with circuit diagram extract)
• The sound hums, the signal only comes through quietly. (part of circuit diagram displayed)
• White screen. Flyback lines. at start-up.
• When switching on the PSU whistles and in the high voltage unit R3620 blows. (picture attached)
• No colour, screen is pink.
• Approx 5-10 secs after switching ON, image is unsynchronized, after that period all functions are OK. Same problem after each channel switching.
• Sometimes no function or micro cuts in picture/sound. (picture attached)
• Starts up with white picture and retrace lines, then falls out.
• Wavy picture and hum in sound. Crackling in PSU. (picture attached)
• + 140 V not present. (part of circuit diagram displayed)
• Upper picture third is brighter (linearity fault). (extract of circuit diagram attached)
• The power supply fuse and transistor BUT12A are defective about once a week. (part of circuit diagram displayed)
• Flyback lines in a certain colour. Blurred picture. (extract of circuit diagram attached)
• Faint whistle from line stage. (service info for SIERRA -63KE5722)
• All vertical edges in picture are wavelines.
• Shuts down. (+ extract of circuit diagram)
• Begins to whistle after approx 2hrs. If switched off then on again, it runs again for 2hrs. (picture attached)
• No synchronisation. when cold. (SIERRA - 63KE5722 information)
• Half of picture present or no brightness. (+ extract of circuit diagram)
• Horizontal centre adjustment.
• Wavy picture. on sides.
• On switch on, the speaker rattles and no other function. When the speaker switch is pushed, the set functions ok.
• TXT has swaying (S shape). (extract of circuit diagram attached)
• Black screen when cold. Picture appears at the bottom then moves gradually over rest of screen. (part of circuit diagram displayed)
• White screen. Flyback lines. Switches off by itself. (+ extract of circuit diagram)
• Contrast control is defective. Picture has red shadow streaks.. (picture attached)
• No start up or standby. (with circuit diagram extract)
• Dark bar in the top tird. Linearity ok. (extract of circuit diagram attached) (63KE5722 tips)
• No line synchronisation at top of picture during channel switch over for 2 or 3 seconds and during program broadcast. (with circuit diagram extract)
• Voltage in PSU cannot be adjusted under 150V.
• Foldover with bright line across centre of screen, and top stretched.
• Green tinge in picture. (with circuit diagram extract) (63KE5722 tip from SIERRA)
• Fizzing and smoke. (with circuit diagram extract)
• STEREO matrix adjustment. (63KE5722 tips)
• High audible tone. (with circuit diagram extract)
• Enter service mode.
• Black screen. After 5 mins white line on lowest third of CRT. (+ extract of circuit diagram)
• Remains in standby. When forcing switch on, occasionally appliance starts but number "8" appears on display and no channel changing. Only raster.
• Vertical fails, stripe or partial picture.
• BUT12 S/C at start up. Changed as well as line transformer, CNX62. No start up of HT.
• No picture in tuner or in scart. Audio OK.
• Scanning fault. (extract of circuit diagram attached)
• Bright picture with flyback lines for a short time, then cuts out. (with circuit diagram extract)
• When picture is dark, it begins to tremble as does the sound. (part of circuit diagram displayed)
• Dead. Humming noise from transformer. (+ extract of circuit diagram)
• SOPS transformer vibrates in standby mode. (with circuit diagram extract)
• Nasal sound with background noise. Sound ok in scart. (picture attached)
• At start up picture appears in black and white with a 6 or 7cm wide band at the top of the screen (approx two thirds of the way down). (part of circuit diagram displayed)
• Picture collapse depending on volume.
• Occasionally the picture gets brighter at a successively quick rate. (with circuit diagram extract)
• No operation. (picture attached)
• Green picture. Flyback lines. (+ extract of circuit diagram)
• The brightness, contrast, colour and sound commands do not function. (part of circuit diagram displayed)
• Faulty raster. (with circuit diagram extract)
• 140V too high, cannot be adjusted.
• Excessive HV. No picture. (part of circuit diagram displayed) (SIERRA - 63KE5722 information)
• Line output stage transistor blows immediately at switch on. (+ extract of circuit diagram)
• The picture is too wide and cannot be controlled. After about 5 min. BU508 blows. (part of circuit diagram displayed)
• No audio. OK via SCART . (part of circuit diagram displayed)
• Blank raster. Switches off by itself. (part of circuit diagram displayed)
• The power supply stops when the appliance has been switched on. Fuse 1601 has been checked. Secondary has been unplugged in the same way. (picture attached)
• No picture sync when changing channel (chassis index AG07) with aerial signal higher than 10mV. (63KE5722 tips)
• Focus varies.
• 50V instead of 140V on the line output transformer BU. (with circuit diagram extract)
• No sound on both channels, only via scart. (+ extract of circuit diagram)
• Volume changes with the picture content. Sound distorted. (picture attached)
• Pincushion distortion. (+ extract of circuit diagram)
• No start-up (intermittently). (picture attached)
• No synchronisation (after a few seconds). (picture attached)
• No display. (picture attached)
• Sound disappears on Canal Plus and intermittently.
• High pitched audible tone. SMPS and line output transformer with line output transistor OK.
• PSU whistling at switch on. Sometimes starts up after a few mins. Ok when warm. (+ extract of circuit diagram)
• Switches to standby (intermittently). (extract of circuit diagram attached)
• Character error.
• No tuning. (+ extract of circuit diagram)
• Shuts down (after warm-up). (63KE5722 tip from SIERRA)
• Permanently in stand by.
• No start up. Mains switch noises.
• No sound, no picture. High voltage and LED from scart is present. (picture attached)
• After switching on the appliance makes a singing noise. (part of circuit diagram displayed) (63KE5722 tips)
• No sound. Quiet buzz at maximum volume. Picture OK. (part of circuit diagram displayed)
• Sometimes no picture for 20 minutes. Sometimes no sound. Sometimes there is a picture but with interruptions, possibly lines swaying. (picture attached)
• Delay line adjustment.
• Picture changes jerkily. Tuning voltage changes. Error occurs most of the time in the first mins. May also only occur with individual programs. (+ extract of circuit diagram)
• Brightness, contrast and colour will not stay in memory. (picture attached)
• Frame IC (TDA3654Q) destroyed after a few hours/days.
• When switching over to another channel, station disappears for a short time. Possibly pulsating.
• 140V can not be adjusted.
• Black screen on encrypted Canal Plus. All other channels OK, even Canal Plus, if decoder is unplugged.
• Chroma trap adjustment - Luminance circuit.
• Dark screen with slightly lit horizontal zone at top of picture. Spot in middle of screen at switch off. Sound ok. (+ extract of circuit diagram)
• Weak picture. TXT OK. Contrast is adjustable but cannot be set properly. (with circuit diagram extract)
• Tripping (intermittently).
• +140V power supply voltage adjustment.
• The speakers are defective. (service info for SIERRA -63KE5722)
• Switches to protection mode. PSU whistles.
• No contrast control. (+ extract of circuit diagram)
• When switching on from cold the top part of the picture appears completely black or else with a dark band 6-8 cm high. Defect disappears when the appliance warms up. (picture attached)
• Lines are stretche in upper picture area (only in cold condition).
• Tuning unstable. (part of circuit diagram displayed)
• Trembling picture, just on some channels. (+ extract of circuit diagram)
• Picture appears slowly. Audio OK . (extract of circuit diagram attached)
• Line end stage does not start oscillating.
• Brief loss of colour during first ten minutes. Picture occasionally jumps when fault occurs.
• Hyperband channels adjustment.
• Audio control IC TDA8421. (part of circuit diagram displayed)
• Picture jitter and nasal sound according to picture content.
• The line end transistor SD1577 short circuits at once when the appliance is switched on. Resistors 3620 and 3619 (56R) blow. C2609 has been replaced. No dry joints.
• Displays F1 after a short time. Operation is blocked. (picture attached)
• Picture is all blue with one white stripe in the bottom section. Flyback lines are also visible. TXT is faintly visible in bottom section. (picture attached)
• White flyback lines. White bar in the top third of the picture. Improves with increasing working time. (63KE5722 tip from SIERRA)
• Appliance had dry joints on the line transformer. BU508 AF had s/c. After replacing transistor it cut out again when switching on, although the dry joints, which must have been the cause were removed. (with circuit diagram extract) (63KE5722 tips)
• No colour (intermittently).
• Set dead BUT12 chopper transistor S/C. (part of circuit diagram displayed)
• Low contrast. Picture too small. (+ extract of circuit diagram)
• White lines or black bars, which disappear slowly. (extract of circuit diagram attached) (service info for SIERRA -63KE5722)
• Purple picture after loose connection of brown wire to picture tube base and aquadag coating. Colour changes to white with intermittent flyback lines. Picture contents in background but distorted then they disappear.
• No sound in PAL.
• This Nicam set stuck in standby and the power supply is tripping. (SIERRA - 63KE5722 information)
• 6MHz adjustment - Audio section.
• No picture, no sound. Appliance whistles (chirps) and emits smoke.
• R3486 and D6486 burn at switch on.
• After plugging in a defective scart cable there is still only a bluish shimmering picture. IC4850 has already been replaced. (part of circuit diagram displayed)
• White screen. Flyback lines. after start-up. Shuts down. after a while. (extract of circuit diagram attached) (63KE5722 tips)
• PSU chirps.
• No picture. No sound. Scart LED flashes in front.
• No TXT. when cold.
• No picture if the appliance is connected via a scart cable.
• No sound with reception of mono transmitters. (picture attached)
• Wrong EHT values.
• No reaction to IR receiver. User control OK.
• 2SD1577 fails after approx 20 secs. Distorted picture at switch on. Power supply OK with 75W lightbulb.
• Switches to standby (after start-up).
• Screen saturated in green (looks like defective tube). (+ extract of circuit diagram)
• Poor sync. Horizontal lines which are more or less strong according to the picture unit.
• Skips channels during tuning. (picture attached)
• Tearing depending on picture content. Vertical synchronisation is unstable. The brighter the picture content, the more stable the picture. (extract of circuit diagram attached)
• Lines in picture. at top. (63KE5722 tips)
• No function, PSU sings, protective circuit. (picture attached)
• No synchronisation.
• Picture has very bad distortion (notches on the sides). Noises in the sound. In the line end stage all secondary voltages are approx 10% too low.
• Noise from the HV transformer in standby. (part of circuit diagram displayed)
• Interference in picture. (picture attached)
• No start-up. when cold.
• Poor picture because the appliance keeps searching for channels. A good synch. pulse is not present on Pin 28 of the tuner.
• Saturated green screen (impression that the tube is defective). (with circuit diagram extract)
• Ht high, will turn down to 159V but no further. (part of circuit diagram displayed)
• No start-up. (with circuit diagram extract)
• Occasionally BUT12A blows.
• No RC functions. (63KE5722 SIERRA repair tip)
• Vertical fault. when cold. (+ extract of circuit diagram)
• Defective PSU. (part of circuit diagram displayed)
• Distorted picture when cold in top third of screen. Picture gradually returns to normal after 10 mins. (extract of circuit diagram attached)
• Refs of transistors beside the power supply BUT 12. (with circuit diagram extract)
• Goes on for a moment then goes into standby. PSU with lamp ok. (with circuit diagram extract)
• Intermittent interference on channels 5 and 12. Only when changing channels.
• Does not tune on channel. Channels can be recognised, but appliance continues to search. (picture attached)
• Sound level increases strongly intermittently. Appliance switches to Programme 1. LED on TV is flashing.
• Vertically non-linear picture. Picture is stretched at bottom and top side. (picture attached)
• Picture disappears. Fault occurs only for approx 15mins, then appliance functions normally. (63KE5722 tip from SIERRA)
• The power supply does not start up at 210V but at 230V. (+ extract of circuit diagram)
• No channel input possible. The display does not switch over to channel.
• Switch on for a fraction of a sec then no standby light. (picture attached)
• Picture appears after 5-10 minutes. (63KE5722 tip from SIERRA)
• Picture is black or grey. Sound OK.
• Video and display cut out. Only green light stays on.
• Option changed, only UHF tuning.
• Maximum picture width, cannot be regulated, fuse 1601 is defective. (extract of circuit diagram attached)
• Low sound or no sound at all. (+ extract of circuit diagram)
• Initially, large white dots behind bright picture contents, followed by jump to stand-by.
• Occasionally brightness flickers when changing scene, then becomes stable again with the next scene. (picture attached)
• No vertical deflection. (+ extract of circuit diagram)
• When the voltage becomes more than 140V, the BUT explodes.
• Display does not switch off, snow, sound cuts out.
• The picture is white and shows flyback lines. The appliance goes to protective circuit. (+ extract of circuit diagram)
• No picture. Sound and picture appear only after longer operation. Sound via AV is OK.
• No vertical deflection. when cold. (extract of circuit diagram attached)
• Purple and green colours saturated. Same colour problem via scart.
• Half of the picture is a black space which runs to the top half. After 1 min. it becomes smaller and pulls to the left. Picture is then fine.
• Voltage and type of memory battery.
• Dark screen. (+ extract of circuit diagram)
• Whistling. after start-up.
• Character generator SAA5243P/E. (extract of circuit diagram attached)
• No function. Fuse Si1651 (2A) is defective. (+ extract of circuit diagram)
• Switches off and whistles after 10 minutes of function.
• TXT stops on page 100.
• Cuts out occasionally after 30 seconds.
• No line drive. (picture attached) (service info for SIERRA -63KE5722)
• Hum in sound. Sound only comes through quite quietly. (with Chassis 2B version 3). (extract of circuit diagram attached)
• Appliance runs for a few days and then switches off. (picture attached)
• Stuck in standby, Power Supply Part tripping. Tries to start up if prog button held in but LED corrupted. (with circuit diagram extract)
• Poor vertical linearity. (extract of circuit diagram attached)
• Poor contrast and pale picture. (with circuit diagram extract)
• No vertical synchronisation. (+ extract of circuit diagram)
• Focus potentiometer keeps burning out. No shorts (also no UG2 short).
• Nasal sound on some channels.
• Wavy picture. Does not switch to standby.