257326 / SBR [TV]

• No raster. on lower half screen. (with circuit diagram extract)
• No picture (intermittently). (part of circuit diagram displayed)
• Memory switches from 11 to 01 when switching channels quickly.
• No focus (when cold).
• Negative picture with black smear on sides of pictures. (service info for SBR -257326)
• 7619 heats up. (picture attached)
• LED goes off after 10 mins in standby. TV will not start up again but does so when cold. (part of circuit diagram displayed)
• EHT flashovers. (+ extract of circuit diagram)
• After 5 mins impossible to change channel from the RC or front panel. Occasionally display goes off.
• Tube arcing at switch on and switch off. (with circuit diagram extract)
• Streaked picture at start-up. (service info for SBR -257326)
• No button operation. (picture attached)
• Poor horizontal scanning, like "teeth " to left and right side of picture. (with circuit diagram extract)
• All settings are lost at start up via On/Off switch. (with circuit diagram extract)
• Dark picture. after a while.
• Contrast and brightness cannot be adjusted after a while, picture becomes darker.
• Picture appears slowly. after a few minutes (when cold).
• Screen flashes at start up or intermittently. Then either shuts down without standby or loses all channels or switches to PAL. (picture attached)
• Special settings do not remain in memory.
• Flashes cyan after warming up. (extract of circuit diagram attached)
• Blue picture (intermittently).
• Vertical collapse (intermittently). (picture attached)
• E/W problem. Image collapses in one point at the centre of the screen. (257326 SBR repair tip)
• PSU pulsates when cold for 1min then picture and sound return.
• Black screen. (picture attached)
• Intermittently trips and/or reverts to channel 1.
• Switches off preceded by varying HT supply. (with circuit diagram extract)
• Sawtooth picture especially when cold. (picture attached)
• No picture. OK after a while . (part of circuit diagram displayed)
• PSU functions but supplies low voltages (eg.90V for 140 etc.). Adjustment 3670 functions. (with circuit diagram extract)
• RC only functions after 10 minutes. Receiver and RC are OK. There is no small module in power supply. (extract of circuit diagram attached)
• Ticking noise. at start-up (intermittently).
• U743 tuner replacement.
• No video signal content on raster. 88 on display. No sound of EHT voltage generation. Lower part of raster darker than top. (picture attached) (257326 SBR repair tip)
• Only 'E' on OSD.
• The microprocessor is blocked. No programme indicator (+ extract of circuit diagram) (257326 SBR repair tip)
• Height and width decreased with lower half darker. Display shows "88". Faint raster. (with circuit diagram extract) (257326 tips)
• Green circle on screen with red border, purplish colour.
• BUT11 burnt. (with circuit diagram extract)
• Sawtooth around characters for 15 minutes then picture becomes normal. (extract of circuit diagram attached)
• Vertical lines serrated on all 5cm's. Sometimes switches off. (+ extract of circuit diagram)
• Does not switch to E-E via scart.
• After playing a few days the fuse blows, the transistor is then defective. The fault occurs in standby. Appliance switches off after a while. (extract of circuit diagram attached)
• No picture or sound. "E" in display. PB via AV ok.
• Green picture with horizontal lines. OK when warm. Whistle in standby. (picture attached) (service info for SBR -257326)
• Black vertical lines in picture. (extract of circuit diagram attached)
• Fuse 1653 blown. (+ extract of circuit diagram)
• Starts up, switches off and starts up again spontaneously or memory loss or sound howling.
• Trips. Functions OK after a few mins. When switched off, 3 colours visible (afterglow). OK when subsequently switched on (appliance is warm).
• Hiss in audio.
• Blue screen. Flyback lines. Knock sensitive.
• Does not switch to standby. Cycles on/off. (part of circuit diagram displayed)
• Values of resistors R3658 and R3659. (part of circuit diagram displayed)
• Shuts down. after a while.
• BUT11A and bridge diodes 6657 to 6660 blow after 15 days when selecting a function from standby. (service info for SBR -257326)
• Swirling lines across screen. Does not stop in AUTO SEARCH when channel found. (+ extract of circuit diagram)
• Switches to standby. (+ extract of circuit diagram)
• Poor picture. (picture attached)
• No picture (intermittent/intermittently). Picture disappears and screen is white after appliance switches off for a moment.
• Intermittently line transistor shorts. (picture attached)
• Switches to protection mode (after a few seconds). (+ extract of circuit diagram)
• S shape picture.
• Horizontal tearing. Vertical line tearing. (+ extract of circuit diagram)
• Snow in picture when chassis is tapped.
• Switches off by itself. Very intermittent fault. May work again after several attempts at switching on.
• Whistling. after warm-up.
• PSU output voltage very high. (part of circuit diagram displayed)
• Starts up with grainy and unsynchronised picture.
• BU trips on mains 220V, heats up on mains 110V. (part of circuit diagram displayed)
• Dark picture for 10 mins after switch on. Sound OK then picture appears. Loss of picture when there is a lot of white. Picture OK after 20 mins. (extract of circuit diagram attached)
• Picture is too narrow. Vertical wavy lines. (picture attached)
• Power supply blows up.
• No colour. (part of circuit diagram displayed)
• No picture when switching on. After about 15 minutes the picture appears slowly, but contrast is poor (and hardly adjustable). Various supplied voltages are present. (extract of circuit diagram attached)
• No vertical deflection. (with circuit diagram extract)
• Picture bends inwards. (extract of circuit diagram attached)
• Wavy picture. (picture attached) (257326 tips)
• All horizontal and vertical lines tear in a wavy manner. (extract of circuit diagram attached)
• BUT blows if appliance remains in standby. (+ extract of circuit diagram)
• Tearing or ripple on picture when turning TV on. Present also after warming up. (+ extract of circuit diagram)
• No TXT. (extract of circuit diagram attached)
• Weak unstable vertical when cold. (+ extract of circuit diagram)
• 5cm missing in lower part of picture. (picture attached)
• Repeated failure of the supply. (with circuit diagram extract)
• Power supply defective. (257326 tip from SBR)
• No channel and no colour when switching off then on with main switch after channel programming. (SBR - 257326 information)
• Snowy screen. No RC or front controls. Standby LED and display switched off. Sound and picture ok when restarting TV. (part of circuit diagram displayed)
• Fuse (1.6) in the power supply blows instantly.
• Frizzy line on picture. (+ extract of circuit diagram)
• At high contrast, at bright picture sections, horizontal, fine lines. (part of circuit diagram displayed)
• When switched on TV starts up correctly. When it goes into standby it switches off completely. When switched on again it starts up again for approx 3 secs then switches off completely. No light is lit.
• Colour flickers. (part of circuit diagram displayed)
• Line tearing. (with circuit diagram extract)
• +140V adjustment. (extract of circuit diagram attached)
• AV correction does not function. (with circuit diagram extract)
• No start-up. Standby LED flashes . (part of circuit diagram displayed)
• 72V instead of 140V on secondary. (extract of circuit diagram attached)
• Microcomputers and screening plate.
• Vertical collapse. (part of circuit diagram displayed)
• When using the Philips teletext kit, there is no teletext.
• Intermittent output from power supply low and pulsing.
• Waves in picture.
• BUT11 and diode 1N5061 become S/C. (picture attached)
• Blows line BU.
• Vertical waves, frizzy lines. (picture attached)
• Intermittent arcing noise with loss of adjustments or goes into PAL or cuts out without the standby light. (picture attached)
• Intermittent HT shutdown. (+ extract of circuit diagram)
• Defective vertical linearity. Shading at bottom of picture. (with circuit diagram extract)
• No audio (intermittently). (part of circuit diagram displayed)
• Rippling jagged verticals. (part of circuit diagram displayed)
• Does not switch to standby. (picture attached)
• Slight predominance of the green. The blacks are greenish. Some flyback lines are green.
• White screen, no sound. An "E" appears on screen. When connecting TV, no. 1 appears, but instantly switches to E.
• No audio. via speakers.
• Vertical ondulation of the picture. (+ extract of circuit diagram)
• Short picture breaks (white picture).
• No picture. Display lights up. (extract of circuit diagram attached)
• Low brightness. Low contrast. when cold. (+ extract of circuit diagram)
• White screen. Flyback lines. (picture attached)
• Poor width and poor EHT regulation. (with circuit diagram extract)
• Hiccups when brightness is high.
• Picture jumps 3 mins after start up. Occasionally it turns pink, white, blue or yellow. (+ extract of circuit diagram)
• No picture. (extract of circuit diagram attached)
• Problems with Fast TXT. Cannot find page 811 whereas in spite of this the page is broadcast. TXT header remains on subtitles. (with circuit diagram extract)
• No E/W correction. (part of circuit diagram displayed)
• Occasionally the channel has been erased from the memory, completely at random and in the space of a few weeks. Channel resetting has no problems at all. (+ extract of circuit diagram)
• Repeatedly cuts out for a short time when cold. (picture attached)
• Replacing control IC7840. (with circuit diagram extract)
• Dark picture. Brightness, contrast and G2 at max. (extract of circuit diagram attached)
• Picture missing at start up, then appears, but with distorted lines. (with circuit diagram extract)
• Trips. at start-up.
• In standby PSU fails and destroys BUT11. (+ extract of circuit diagram)
• PSU blown after implementation of modification.
• Oscillations in picture, horizontal stripes and oscillations. (extract of circuit diagram attached) (257326 tip from SBR)
• Occasionally the picture pulls. (+ extract of circuit diagram)
• Vertical lines. Switches off by itself. intermittently. (+ extract of circuit diagram)
• No preset levels. Nonsense in display.
• Vertical outline drift.
• Supply voltages collapse under load.
• Pulsating picture. (+ extract of circuit diagram)
• Vertical lines not linear. (with circuit diagram extract)
• 1mm curl in vertical lines. (extract of circuit diagram attached)
• 3 mins after start up, the picture turns blue with horizontal white lines then after everything returns to normal. (+ extract of circuit diagram)
• Starts up with a click when cold. Distorted picture during 1 min. Picture flickers. (picture attached)
• Picture flashes and sound cuts out at same time as picture.
• BU508 S/C. (+ extract of circuit diagram)
• No colours in SECAM. (with circuit diagram extract)
• No picture. No audio. intermittently. Horizontal line. in E-E (intermittently).
• Back-up battery symptoms after replacing memory. (part of circuit diagram displayed)
• Picture rolls. (picture attached)
• Starts up at switch on but just as the picture begins to appear the appliance flashes on and off quite violently but irregularly.
• Searches for channels continuously. (extract of circuit diagram attached)
• Vertical line distortion due to contrast excess. (+ extract of circuit diagram)
• Vertical black lines in picture when in EXT1 mode. (part of circuit diagram displayed)
• Over mains panel. (with circuit diagram extract)
• Unstable picture in TXT. Noisy characters at bottom of screen when using TXT. (picture attached)
• Smoke from R3628 (6.8R). (picture attached)
• No picture or faint picture as A1 advanced.
• Extremely strong howl in sound. "E1" appears on display.
• TS7665 fails. (part of circuit diagram displayed)
• Vertical foldover at bottom. (extract of circuit diagram attached)
• Identification of teletext decoder through microprocessor.
• Dead. No display. No RC functions. (part of circuit diagram displayed)
• Tripping. (picture attached)
• No front controls and no RC. "88" on display. (picture attached)
• Switches to standby (intermittently).
• Trips for a few seconds before starting up: chassis of an overmain-primary power supply circuit.
• No brightness. No contrast. (extract of circuit diagram attached)
• Power supply is destroyed when appliance is left in standby. (extract of circuit diagram attached)
• Strong chirping noise in line transformer. (+ extract of circuit diagram)
• Blue picture (after warm-up).
• Dark screen, normal sound when switched on. Picture appears after 2 to 3 mins.
• Fails occasionally. Display is then dark and after mains switch is switched off then on again, runs perfectly again.
• Appliance switches off intermittently with flashes. Sometimes channels switch over to PAL.
• Picture becomes darker, then drops out. (extract of circuit diagram attached)
• Screen is completely blue with white flyback lines when warm.
• Slow to start up 20-30 mins, squealing from line stage. (extract of circuit diagram attached)
• 09 on display. Rattling noise from speaker. (picture attached) (257326 tip from SBR)
• Frizzy lines from top to bottom of picture. (with circuit diagram extract)
• Blue picture. when changing channels.
• Sound and picture pulsate, appliance cuts out for a minute then works normally. Breakdown especially when cold. Pulsing every two seconds.
• No vertical deflection. Line in the middle of frame which does not reach edges.
• Vertical lines show bleeding effect, especially after switch on. (+ extract of circuit diagram)
• No contrast control. No brightness control. (picture attached)
• Vertical lines move slowly to and fro, especially when cold. (extract of circuit diagram attached) (257326 SBR repair tip)
• No raster for 5 mins. (with circuit diagram extract) (SBR - 257326 information)
• No picture. Lines in picture. intermittently. Audio OK .
• Cogging effect on picture. (with circuit diagram extract)
• Volume varies. (extract of circuit diagram attached)
• Black screen. Sound OK. Vertical line on centre of screen when switching off with mains switch.
• Switches to protection mode (intermittently). (+ extract of circuit diagram)
• Pulling at bottom of picture in PAUSE when a video with Foxtrot chassis is connected. (extract of circuit diagram attached)
• No picture. No sound. Display remains on E at start up. (picture attached)
• Edging becomes blurry when subtitles in picture.
• Line transformer (BU508AF) blown repeatedly at start up. When it blows a noise is heard like arcing in line transformer. (extract of circuit diagram attached)
• Reduced height and non linear. Scan at bottom half is missing. (+ extract of circuit diagram)
• PSU oscillates. (with circuit diagram extract)
• Picture tearing and loss of vertical sync. Tends to improve when hot.
• Plopping sound, no picture and sound trips. After a while fault disappears.
• Excessive horizontal size. E/W fault.
• In EXT position a black vertical line appears on left side of picture. (extract of circuit diagram attached)
• No brightness. intermittently. (257326 SBR repair tip)
• Intermittently picture collapse. PSU switches off for a short time. (extract of circuit diagram attached)
• Later chassis, no picture when first switched on. (extract of circuit diagram attached)
• Sawtooth vertical lines. (with circuit diagram extract)
• Standby does not function, picture remains, sound mutes and standby LED comes on. (+ extract of circuit diagram) (257326 SBR repair tip)
• TV chatters at times. Tube noise on screen. (+ extract of circuit diagram)
• Intermittent audio. No start-up. intermittently. (+ extract of circuit diagram) (257326 tip from SBR)
• Power supply blown or does not operate; BUT11AF failure. (+ extract of circuit diagram)
• Dead or very poor power regulation. (with circuit diagram extract)
• Jagged verticals. (extract of circuit diagram attached)
• Picture remains dark. Contrast, brightness and colour controls ok. (part of circuit diagram displayed)
• Blue screen with white horizontal lines after a few secs. At start up picture ok. Sound ok.
• Slow start-up. (+ extract of circuit diagram)
• No or intermittent start-up. (with circuit diagram extract)
• Blue screen. Flyback lines. Fault occurs intermittently. .
• Picture ringing plus herringbone pattern and no teletext.
• Loud audio (intermittently). (part of circuit diagram displayed)
• Low contrast in picture, impossible to adjust contrast. No sound intermittently. (part of circuit diagram displayed)
• Blue picture. Flyback lines. (+ extract of circuit diagram)
• No HV. Audio OK . (+ extract of circuit diagram)
• No sound. Dark picture. F1 on display. (part of circuit diagram displayed)
• Low brightness and line ripple. (part of circuit diagram displayed)
• Picture goes off occasionally or repeatedly flashes off and on. (picture attached)
• Channels drift, especially channel 44. Tuner OK. (extract of circuit diagram attached)
• Patterning on all channels. Appears to go past station when tuning slightly.
• No start-up. (+ extract of circuit diagram)
• Right side of picture becomes narrower.
• Slight ripple barely visible. (part of circuit diagram displayed)
• No RC functions. Other functions OK . (extract of circuit diagram attached)
• Horizontal pulling of picture with considerable change in brightness. (with circuit diagram extract)
• Intermittently, picture disappears and screen becomes black. Sound OK. (part of circuit diagram displayed)
• Cycles on/off (when cold).
• Dead. (part of circuit diagram displayed)
• Line tearing. when cold. (picture attached)
• Flashes green for a few minutes when switched on. (part of circuit diagram displayed)
• Dark picture (intermittently). Audio OK .
• Weak contrast. (part of circuit diagram displayed)
• Waves in picture (in verticals, therefore, horizontal fault). (extract of circuit diagram attached) (service info for SBR -257326)
• When switching on TV it moves frequency. Also sometimes previously memorised channel is missing.
• Tuning drifts. (part of circuit diagram displayed)
• Reduced brightness and line ripple. (+ extract of circuit diagram)
• Vertical waving of lines for approx 2 mins. (+ extract of circuit diagram)
• No channel storing. intermittently. (picture attached) (257326 tip from SBR)
• Slight flyback line, black line.
• Horizontal lines. (with circuit diagram extract)
• No picture, contrast up volts on TDA3562 stuck at 1.5V approx. (+ extract of circuit diagram) (service info for SBR -257326)
• Fuse for mains input voltage blown suddenly at switch on. (picture attached)
• When in standby switch off TV using RC, appliance continues to hiccup.
• How to store user controls.
• No sound. Faint picture caused by lightning. (part of circuit diagram displayed)
• No raster. Audio OK . (part of circuit diagram displayed)
• Loud audio (after start-up). Does not alter when ± volume button is pressed. (+ extract of circuit diagram)
• Intermittently switches off briefly, especially when tapped.
• CTV functions when switched on by the switch. If switched off by the RC, impossible to switch on again by RC or by switch. Once cold, it can be started again only by the switch.
• Poor sound in Canal Plus during coded transmissions. Sound OK when in clear and on other channels. (part of circuit diagram displayed)
• Intermittently no start up with ON/OFF switch. No standby light or channel display. (extract of circuit diagram attached)
• No picture. No HT sound. Display OK. (picture attached)
• Poor RC sensitivity. (picture attached)
• Weird noises on channels (like EHT flashovers). (+ extract of circuit diagram)
• Picture drops out for short while (picture becomes white thereby).
• Three small lines at centre of tube. At switch off discontinuous faint vertical bar, burnt screen. (+ extract of circuit diagram) (257326 tips)
• Picture disturbed by a wave visible along the human contours. (+ extract of circuit diagram)
• Sound OK at switch on. When volume increased sound becomes unstable and distorted then cuts off 1 min later.
• Error codes. (part of circuit diagram displayed) (257326 SBR repair tip)
• No reception.
• Randomly switches off and video mute.
• Picture takes time to appear at Power On and sound is very loud. No function keys. Erratic functions. No display.
• Picture crackling, mostly when cold.
• When switching TV to standby and turning it off via mains switch, it takes time to start up again.
• Intermittent loss of power, picture going off for a split sec and display flickers.
• No video after heating up for 1 to 2 hours. (+ extract of circuit diagram)
• Picture turns from white to black (when cold). (picture attached) (SBR - 257326 information)
• Tuning voltage slow to rise to its normal value (pin 11 of tuner). (257326 tips)
• Pincushion distortion. (extract of circuit diagram attached) (SBR - 257326 information)
• E/W fault. (picture attached)
• Wavy verticals. (picture attached)
• No picture. at bottom. (+ extract of circuit diagram)
• Lines in picture. on the left. (with circuit diagram extract)
• Attempts to start but trips, pulsating rapidly in short intervals.
• TDA3566/N6 (IC7260). (+ extract of circuit diagram)
• R2665 O/C. (extract of circuit diagram attached)
• Trips violently as picture appears.
• No synchronisation.
• Picture is visible but there is a white veil over screen. Sound OK.
• Canal Plus in black and white. Colour ok on other channels. Brightness ok. Colour problems after a certain amount of time. (+ extract of circuit diagram)
• Horizontal raster lines over entire picture. (with circuit diagram extract)
• No picture. Audio OK . (extract of circuit diagram attached) (service info for SBR -257326)
• Starts up jerkily after 2 mins. Start up is OK when appliance becomes hot after a few minutes.
• Thin lines, like pencil lines over the picture.
• Crackling on picture. Thin black lines than increase in number when cold.
• No picture when cold. When warmed up, dotted lines appear and vertical deflection is reduced at the bottom. TV works OK after a few mins. (257326 tips)
• No sound. Dark screen. Jerky noise in speaker when pressing volume.
• Memory loss only on channel numbers 1, 2, 3. All other functions are correct. (part of circuit diagram displayed)
• Intermittent foldover if brightness is too high. (+ extract of circuit diagram)
• Venetian blind effect. (extract of circuit diagram attached)
• Appliance and LED switch off from standby. When warm, display darkens and channels go out of tune. (picture attached)
• Shuts down (after start-up). (part of circuit diagram displayed)
• Starts up correctly and switches off with squeaking then LED switches off.
• Picture has flashing line across. (part of circuit diagram displayed)
• Appliance hiccups (only with white screen during playback). (with circuit diagram extract)
• Black screen with sound. If it is switched off and on again with mains switch, sometimes white screen with flyback lines. (picture attached)
• Black lines in picture, E/W fault, rattling sound from high voltage area.
• Picture vibrates vertically.
• Switches off at random or white picture for a short time. (part of circuit diagram displayed)
• Memory loss of one or two arbitrary programmes. (with circuit diagram extract)
• No picture, high pitch noise before failure. (with circuit diagram extract)
• Whites very faded, very grey. Functions OK.
• No start up. No display or PSU clicks and display pumps. Hit by lightning. (part of circuit diagram displayed)
• Head does not stop.
• No functions. (picture attached) (257326 SBR repair tip)
• Signals to BUT11 in PSU and the four 300V diodes are occasionally defective.
• Vertical picture shift towards left side. (extract of circuit diagram attached) (service info for SBR -257326)
• No picture. Sound hiccups and pops. After some time functions normal again.
• Interference in picture when aerial is touched or when appliance is touched. (part of circuit diagram displayed) (service info for SBR -257326)
• Break up of picture (dashes on the picture). (extract of circuit diagram attached)
• PSU output voltages very low.
• Screen split into 4 areas: 1. Black bar; 2. Compressed picture with horizontal white lines; 3. Good picture; 4. Black bar. (picture attached)
• Page 811 appears spontaneously. (+ extract of circuit diagram)
• Picture has shifted to the right. Colours drop out. Picture becomes blue or red. Picture position changes. (part of circuit diagram displayed) (SBR - 257326 information)
• Flickering text and apparent tuning drift. (with circuit diagram extract)
• No channels. intermittently.
• Intermittently switches off then comes back on after several attempts.
• Picture stays in black and white. Contrast and brightness controls have no effect.
• After operating normally for a short time some channels disappear. Frequency slip. (257326 tips)
• Intermittently flash. System LED flashes but TV does not stop completely.
• No display. Standby or RC does not function. Slightly snowy picture and no channels are received. Otherwise there is no function.
• Does not switch to standby. intermittently.
• Low HV.
• No front panel function. (part of circuit diagram displayed)
• Intercarrier rattle in the sound. (+ extract of circuit diagram)
• No HV. (extract of circuit diagram attached)
• Reduced vertical size. Vertical foldover. (+ extract of circuit diagram)
• In standby, green horizontal line in middle of screen pulsating. When channel is altered then line becomes brighter with a pulsation. (part of circuit diagram displayed)
• No or intermittent picture. Knock sensitive. (extract of circuit diagram attached)
• Switching transistor TR7665 (BUT11AF) in the PSU is S/C. (extract of circuit diagram attached)
• Weak points in picture. (extract of circuit diagram attached) (257326 SBR repair tip)
• Green, bright flyback line. (+ extract of circuit diagram)
• Fuse shatters. BUT11 is S/C. (with circuit diagram extract)
• Channel display keeps going to E. (+ extract of circuit diagram)
• Memory loss. only on one channel.
• Starts up. Red LED lights up for a few secs then dead. Cycle may be reproduced some 10 secs after.
• Knotted lines and verticals on the picture on the left in ext. position. (extract of circuit diagram attached)
• Waves permanently on verticals with test picture or on picture. (+ extract of circuit diagram)
• No contrast. intermittently. (picture attached)
• Line time base/video/high frequency fault. (+ extract of circuit diagram)
• Arcing. after a few seconds.
• Picture jitters. Picture shifted to the right.
• Dead and makes a loud tripping noise.
• IC7260 changed type. (+ extract of circuit diagram)
• Picture appears slowly. (part of circuit diagram displayed)
• Difficult to switch on. Does not stay in standby. (with circuit diagram extract)
• It takes the picture long time to appear and when it does, there is poor contrast. Sound OK. (with circuit diagram extract)
• No display. after a few seconds. No front panel function. No RC functions. (picture attached)
• New type stands. (service info for SBR -257326)
• PSU "clatters" when cold. (picture attached) (257326 tip from SBR)
• Dark picture. when cold. (extract of circuit diagram attached)
• Microprocessor screening plate. (+ extract of circuit diagram)
• Irregular flashing when picture appears. Starts up normally at switch on.
• Occasionally there are breaks in the luminance. (part of circuit diagram displayed)
• No picture. Thin horizontal bars on the whole of the screen. the pot is adjusted slightly the picture appears but green pulses occur every second. (with circuit diagram extract)
• Blank raster. No sound. Channel display shows E.
• No picture. at start-up. OK after a while .
• After operating for a few secs, PSU cuts out. It is necessary to wait for a few mins to be able to switch on again. (part of circuit diagram displayed)
• No audio. after start-up. (service info for SBR -257326)
• Flashing picture. when cold. (+ extract of circuit diagram)
• Unstable varicap voltage. (part of circuit diagram displayed)
• No picture via E1. Distorted and saturated picture.
• Stripes in picture. Knock sensitive. (part of circuit diagram displayed)
• Switches to protection mode. after start-up. (with circuit diagram extract)
• R3599 (47R) keeps failing after approx 1 hour. (with circuit diagram extract)
• Significant shifting of picture and black band on the left side of the screen. (part of circuit diagram displayed)
• Hum on B/G standard.
• Switches off by itself. intermittently. (+ extract of circuit diagram)
• 140V rail fails after 5 minutes. (picture attached)
• Memory loss of some pre-programmed programmes.
• Chopper transistor (BUT11AF) fails repeatedly. (+ extract of circuit diagram)
• The microprocessor is blocked.
• Spontaneously becomes intermittent, caused by interference in the power supply. The appliance gurgles. (extract of circuit diagram attached)
• Frayed picture.
• No horizontal deflection. (extract of circuit diagram attached)
• Irregular chirping sounds from the power supply, is not stable in stand-by.
• Display remains blocked on E and automatic search does not stop. (extract of circuit diagram attached)
• Wavy picture on vertical lines. (part of circuit diagram displayed)
• Tripping. intermittently. (+ extract of circuit diagram)
• Distorted audio.
• TV picture remains when standby selected. Sound is muted and red standby LED comes on. (picture attached)
• Height changes with temperature - picture becomes longer.
• No tuning. only on certain channels.
• Does not tune any station, scanning available but does not stop on any station cause signal is missing. (part of circuit diagram displayed)
• Vertical lines are jittering, reacting on mains voltage.
• No red. When knocking on TV, screen becomes red and no picture. (with circuit diagram extract)
• Trips when adjusting contrast. (+ extract of circuit diagram)
• Switches off during program switch-over and when picture turns from bright to dark or vice versa. Clattering from line transformer.
• No picture. intermittently. (with circuit diagram extract)
• No start-up. Standby LED does not light. (with circuit diagram extract)
• 5V problem, point 42 processor 4.7V is insufficient. The processor does anything. 8.5V on the collector of 7727 is ok. (picture attached)
• No audio. when cold.
• "88" on display at switch on. LED lights.
• Curling on the line.
• HT varies, then powers down. (part of circuit diagram displayed)
• Incorrect teletext letter at right hand side of each row. (service info for SBR -257326)
• White vertical line in middle of screen. (part of circuit diagram displayed)
• Dead. Slight noise from PSU. (extract of circuit diagram attached)
• Thin horizontal lines on the light screen. No picture.
• Picture appears faintly in black and white. The bottom of the screen is white. (+ extract of circuit diagram)
• No picture, "E1", after changing fuse 1653 works a couple of hours. (part of circuit diagram displayed)
• PSU defective. BUT11 S/C, mains rectifiers and TEA1039 faulty. (picture attached)
• Colour spots in flat square picture tubes.
• No blue. Poor colour. (picture attached)
• Audio cuts off and standby LED lights up when selecting standby from RC. Picture remains normal. (with circuit diagram extract) (257326 SBR repair tip)
• Various types of picture tubes CP90.
• The picture is too small (height/width) and East/West does not work correctly. (extract of circuit diagram attached)
• No line drive. (+ extract of circuit diagram)
• Pulsates and whistling, display lit but no picture. (+ extract of circuit diagram)
• Goes dead after changing all mod parts. (+ extract of circuit diagram)
• Intermittently functions out of control and no channel memory.
• White screen with flyback lines. Sometimes screen becomes black when switching off and then on with mains switch. Sound available. (part of circuit diagram displayed)
• Picture has poor colours. Scart output ok, poor scart input. (with circuit diagram extract)
• Picture can't be centered, left part of picture shifts back. (extract of circuit diagram attached)
• Brightness varies. (extract of circuit diagram attached)
• Black and white picture with no sound at power up. After adjusting colour and sound on front panel, quick flash and program memory is lost. (picture attached)
• Only the memory of the channel numbers is lost. (picture attached)
• Noise in audio. intermittently.
• Corrugated verticals. (picture attached)
• No audio. after a while. Hum in audio. in standby. (+ extract of circuit diagram)
• Replacing the TXT board.
• Picture trembles, gets smaller/bigger.
• No start-up or no picture. Faltering sound.
• Attempts to start up for a second, display shows ''1'' then letter ''E'' and no start-up.
• No contrast. Poor colour. (picture attached)
• At switch on picture is missing. Contrast builds up slowly over about an hour. (with circuit diagram extract)
• Blank picture for up to 1/2 an hour. (part of circuit diagram displayed)
• Poor sound when volume increased. At switch on numerical display lights up and channel change OK. 30 mins later everything returns to normal. (+ extract of circuit diagram)
• Line output transistor fails repeatedly. (extract of circuit diagram attached) (257326 tip from SBR)
• No audio. (+ extract of circuit diagram) (257326 tip from SBR)
• Front buttons not changing channels or occasionally volume will not change.
• PSU collapses especially at start up. (+ extract of circuit diagram)
• Green flashes in picture.
• Image is overcontrolled or not standing still.
• Line collapses to 2". Dull raster. (with circuit diagram extract)
• Tearing or waves in picture when connecting the TV. Error present even after warm up. (+ extract of circuit diagram)
• Red screen. Flyback lines. No luminance. 37V on collector T7407. (with circuit diagram extract)
• Picture jitters. (257326 SBR repair tip)
• Knock sensitive. Interference in picture. (picture attached)
• Fades out or very dim. intermittently. (extract of circuit diagram attached)
• Switches to standby. at start-up. (part of circuit diagram displayed) (257326 tip from SBR)
• No functions. "E" message in display.
• Switches to protection mode. No picture. Audio OK .
• Station selector sometimes goes to a station higher than 50.
• No channel display or standby LED. (part of circuit diagram displayed)
• PSU not oscillating. (part of circuit diagram displayed)
• Poor vertical linearity. (extract of circuit diagram attached)
• PSU pulsates, sound is audible, words clipped. No brightness.
• 140V HT supply is low at 60-70V. (picture attached)
• BU508A defective. (extract of circuit diagram attached)
• Poor contrast, reduced width with ripples down picture. (+ extract of circuit diagram)
• Picture and sound appears only after a long time. Raster OK.
• Black screen. Cracking from EHT. White points on screen. (+ extract of circuit diagram)
• Picture flickers (darkens 3 times per second approx).
• Lines at top of picture and picture image is bent. (with circuit diagram extract)
• BUT11 blown when switched to standby. Switching on/off with mains switch is OK. (part of circuit diagram displayed)
• Blurry picture. Noise in audio.
• Information for measuring with a constantly defective BU. (with circuit diagram extract)
• Picture jitters. intermittently.
• Intermittently cuts out then starts up again and flashes.
• Burn on board line time base C2611. (+ extract of circuit diagram)
• PSU pulsates.
• No red. No blue. (extract of circuit diagram attached) (257326 tip from SBR)
• White screen. Audio OK . (picture attached)
• Sawtooth on vertical lines and 'water drop' effect. Fault improves slightly when appliance is hot. (+ extract of circuit diagram)
• No picture or sound at start up. OK after approx 15 mins. (+ extract of circuit diagram)
• Picture flickers at high contrast. (extract of circuit diagram attached)
• How to increase safety range. (part of circuit diagram displayed)
• No sound. No picture. Displays "88". 2 LEDs light up.
• Switches off intermittently. Switches to PAL at Power On.
• No RC functions.
• No start-up (intermittently). (part of circuit diagram displayed) (257326 tip from SBR)
• Safety test after repair.
• White screen, no sound. No pretuned channel switchover. (picture attached)
• Horizontal scanning in middle of screen (foldover) with blurred stripes. (+ extract of circuit diagram)
• T7665 (BUT11AF) and D6657-6660 and fuse 1652 (T1,6A) are defective.
• Horizontal foldover.
• Arcing between pin 7 of line transistor and ground.
• No tuning. (picture attached)
• White stripe on left. (part of circuit diagram displayed)
• No picture, no sound. Display shows "F1". (part of circuit diagram displayed)
• Horizontal waves in picture. Picture improves after longer operation. (+ extract of circuit diagram)
• Half of the frame is black. Tuning problems. (SBR - 257326 information)
• Intermittent hiccups and switch off when cold.
• Blows fuse. at start-up.
• Mains rectifier reservoir capacitor C2656 failed. (with circuit diagram extract)
• BUT12 becomes hot and fails when switching to standby. (part of circuit diagram displayed)
• Dead. after a few minutes. (picture attached)
• At switch on screen is blurred and slightly green for a few seconds.
• Black screen. Audio OK . (picture attached) (257326 SBR repair tip)
• Picture is poor in the beginning, first 2 minutes as if the picture tube is defective. (with circuit diagram extract)
• Intermittently picture is bright or blinking for a fraction of a second.
• Faint noise at switch on. (part of circuit diagram displayed)
• E/W distortion. Picture squashed vertically. Poor synchronization. (part of circuit diagram displayed) (257326 tip from SBR)
• PSU hiccups.
• Vertical roll. (257326 tips)
• Teletext problem with photo-CD.
• Intermittently switches off and picture moves horizontally.
• No picture via E1/E2 SCART. No horizontal/vertical sync. Jagged horizontal and interference lines. Picture OK via RF input, except few shaky lines on top when changing channels.
• SOPS blows repeatedly. (with circuit diagram extract)
• In standby, LED goes off after 10mins and no longer possible to switch on TV. If standby is not used TV functions perfectly. (extract of circuit diagram attached)
• Value of resistor R3628 and type of transistor 7930.
• No colour via tuner. Colour buttons do not work. Functions well in RGB via scart.
• No sound at switch on. Picture gradually appears after about 2 to 3 mins. (with circuit diagram extract)
• Intermittently chopper transistor fails. (extract of circuit diagram attached) (service info for SBR -257326)
• No sound in IF, except when pressing volume ± button. (with circuit diagram extract)
• Low contrast. (part of circuit diagram displayed)
• At switch on makes flashes, short interruption when cold for 1 min then normal. (extract of circuit diagram attached)
• Driver transistor 7630 blown after a few secs. (+ extract of circuit diagram)
• Raster is bright white and approx 3/4 sized. No RC functions.
• Ragged verticals at switch on; OK after 15 mins. (with circuit diagram extract)
• Disable hotel mode.
• 140V is 50V.
• Erratic chroma with VCR particularly on special effects. (extract of circuit diagram attached)
• No vertical synchronisation.
• Fuse 1652 blown at start up. (+ extract of circuit diagram)
• BUT11AF failed. (with circuit diagram extract)
• Low supply, +65V instead of +140V. (with circuit diagram extract)
• No front panel function. No RC functions. after a few minutes.
• No horizontal synchronisation. Picture rolls. (with circuit diagram extract)
• Reduced horizontal size. (part of circuit diagram displayed)
• No picture. on upper half screen. (extract of circuit diagram attached)
• Pulses on and off. Slowly stays on longer and longer till it finally comes on fully.
• Distorted picture. No synchronisation (when cold). (+ extract of circuit diagram)
• Poor audio.
• Stuck in standby.
• Erratic start-up.
• No start-up. LED is red .
• Output voltage is reduced. (part of circuit diagram displayed)
• Dead. F1 on display. (part of circuit diagram displayed)
• No start up. F1 displayed. (+ extract of circuit diagram)
• At switch on channel no. displayed then goes into -E-. Impossible to change channels, OK in video.
• Front panel changes up but not down.
• The different BU types.
• Dark picture. Audio OK . (extract of circuit diagram attached)
• Starts up after replacing defective PSU but white flashes on screen and system diode flashes. (extract of circuit diagram attached)
• Intermittently dead. (picture attached)
• Low contrast and no reaction to contrast control. Sound mutes. When adjusting sound (RC or front panel) it returns when key is pressed. (with circuit diagram extract)
• Connection of a loop system to TV.
• No functions. Display flashes .
• Functions OK but blinking LED. Strange display. (with circuit diagram extract)
• Channel 39 is unstable. (part of circuit diagram displayed)
• No channel search. (picture attached) (257326 SBR repair tip)
• Flashing picture. (+ extract of circuit diagram)
• Dotted lines (dashes) flying around on picture--ragged (extract of circuit diagram attached)
• Appliance remains in black and white on VCRs from Far East. (part of circuit diagram displayed)
• Initially no picture; low contrast picture after a few minutes. (+ extract of circuit diagram)
• Noise in picture, horizontal lines. Whistle sound in standby.
• Dark picture. (extract of circuit diagram attached)
• No raster, EHT and heaters ok. (picture attached) (257326 tip from SBR)
• Picture trembles vertically when cold with some programs. OK after warming up.
• Loses sound from memory when TV switched off by the switch. (part of circuit diagram displayed)
• Starts up, picture and sound ok. If put into standby, standby LED switches off after 5 secs, then impossible to switch on again. (part of circuit diagram displayed)
• BUT 11AF blows after a few secs destroying the protection fuse (1:6A). (extract of circuit diagram attached)
• Appliance pulsates for 10 mins before starting up. (service info for SBR -257326)