21D61 / INTERFUNK [TV]

• Approx 20cm wide dark area in centre of picture and line tearing. (21D61 INTERFUNK repair tip)
• No start-up from standby.
• Picture is too wide. E/W distorted.
• Blanking interval on left side of picture, colour flickers and screen dark after a while.
• Few segments of the display too bright. Doesn't respond to commands.
• T501 fails repeatedly.
• Blocked control processor.
• Intermittently line transistor defective at start up. Fault also occurs intermittently in channel search or when switching to another channel. Once appliance runs, it runs well.
• LED lights up briefly then nothing more.
• Picture shifted to the right.
• FBT blows after a few mins. (picture attached)
• Picture rolls. when cold. (extract of circuit diagram attached)
• 88 shown on LED display.
• Switches off when selecting a function via RC.
• Unclear picture with Hum content.
• Operation commands are not carried out.
• No picture. Audio OK . (+ extract of circuit diagram)
• Poor synchronisation. No picture. after a while.
• HV arcing. (with circuit diagram extract)
• Bright picture. on the right. Dark picture. on the left. (extract of circuit diagram attached)
• Bright vertical stripes. No picture content. Sound OK. (with circuit diagram extract)
• Goes into PAL reception when in NICAM reception on channel 64, programme N1.
• PSU doesn't start-up or only after a while. Cracking sound.
• When appliance receives in Nicam stereo, the TV goes into PAL.
• Intermittent flyback lines. Grey scale varies intermittently. Possibly no picture.
• The plug receptacle of the teletext decoder, which is contained in the additional component, does not fit mechanically into the socket receptacle of the appliance chassis.
• Does not go into text mode, mix mode is not possible.
• Picture is out of alignment horizontally. 10cm black bar on the right. (part of circuit diagram displayed)
• Does not switch on. Fluttering noise from the loudspeakers. (+ extract of circuit diagram)
• No picture. No audio. (+ extract of circuit diagram)
• No HT output from power supply. OK in standby. (+ extract of circuit diagram)
• Excessive vertical size. Vertical foldover at bottom. (INTERFUNK - 21D61 information)
• No E/W correction. (+ extract of circuit diagram)
• No vertical deflection. Only a horizontal bright line appears on CRT. Audio OK. (part of circuit diagram displayed)
• Front LED briefly lights up at switch on then it switches off. LED remains lit when mains plug is connected and disconnected but it definitely switches off at start up.
• White horizontal stripe about 5 cm from the bottom. Picture content bellow stripe is altered and noisy.
• No functions. Red LED does not flash.
• Dead. after start-up.
• When the appliance is switched on it goes into undefined operating conditions ie. in spite of correct operating voltages the appliance has eg. no picture, no sound, no display etc. (service info for INTERFUNK -21D61)
• No raster sync in HF. Ok in scart. (with circuit diagram extract)
• Very slight flickering with a light picture. (part of circuit diagram displayed)
• PSU is defective. 300V is present. (21D61 INTERFUNK repair tip)
• Brightness differs between left and right hand side of the screen.
• Cuts out after switch on, soft hum from the speakers in standby mode.
• 10cm black bar on the right of the screen. Voltages ok, corrections work. (with circuit diagram extract)
• Black bars on the bottom of picture. If V-amplitude is altered, picture disappears on the bottom. (extract of circuit diagram attached)
• Control unit does not function. Does not switch on. (+ extract of circuit diagram)
• Defective linearity.
• Horizontal line.
• Picture shaking in a random direction. (picture attached)
• Hums at switch on. (+ extract of circuit diagram)
• Horizontal jitter. when cold.
• Whenever a function is requested display lights up then switches off.
• Long picture at start up, black screen with rainbow spots.
• Afterglow on deflection tube after switch off.
• Vertical line tearing. intermittently.
• Left picture side is brighter, even via AV. (with circuit diagram extract)
• Collapses at start up, then switches off.
• Noise in picture. Poor horizontal synchronisation.
• Blank screen with purple haze at left hand side. (picture attached)
• No control and cannot be switched off when started up from standby.
• Bright raster. Flyback lines.
• After approx 20 mins colour TV switches off.
• Approx. 1cm bright, vertical line on the right hand side of the picture approx. 10cm from the edge.
• Dark screen, only diffuse glow.
• NICAM is missing.
• At switch on, lights light up for an instant, voltage which ought to reach 145V increases to 60V but then goes back to 0V. (extract of circuit diagram attached)
• No tuning.
• Unstable picture. (extract of circuit diagram attached)
• High voltage runs high. Flashover all over. (21D61 tip from INTERFUNK)
• Faint and too dark picture. Low brightness, contrast cannot be adjusted. Colour is adjustable.
• Hum bars, especially on yellow or orange background.
• Builds up high voltage for a short time and then switches off. (part of circuit diagram displayed)
• Does not switch to standby. (with circuit diagram extract)
• When ON/OFF switch is pressed LED lights up and then switches off. If line BU is replaced by lamp, it lights up and collector goes down to 124V instead of 155V. (+ extract of circuit diagram)
• Picture takes 15 secs. to appear. Sound ok and EHT present.
• E/W trapezium does not function.
• Enter service mode.
• Picture shifted to the left. Alignment works normally. (picture attached)
• Sound cracks. Switches off. Display stays. Can be restarted with RC. (extract of circuit diagram attached) (21D61 INTERFUNK repair tip)
• Can be switched to standby only if power plug is pulled out.
• Horizontal synchronisation fault, picture shifted towards left side. (extract of circuit diagram attached)
• At start up the power supply starts up for 2 secs then the appliance apparently goes into safety mode. No fault on the secondary. (21D61 tip from INTERFUNK)
• Line BU voltage = 140V. Value of capacitor C701 (in PSU) illegible. Still no display if line BU disconnected. (with circuit diagram extract)
• Picture shifted to the left. (part of circuit diagram displayed)
• After transporting an appliance, the first time it starts up there may be distorted playback of colour (flickering, drop out or stripes) and/or defective teletext playback.
• NICAM check.
• Whistling HT. No start up due to incorrect HT frequency. May blow S2000 immediately. (extract of circuit diagram attached)
• Line BU is abnormally hot.
• At switch on, functions but with no picture. By pressing the CRT module it unblocks and the picture appears. Predominant colour depends on the pressure used.
• Vertical lines. No colour. after a while.
• Standby display lights up briefly, then no function.
• Unstable horizontal picture.
• Power supply seems to remain in safety mode. (with circuit diagram extract)
• Blank raster. (21D61 tip from INTERFUNK)
• Horizontal shaking. when cold.
• Picture only appears about 3 mins after switch on, when appliance is cold.
• No HV.
• White screen, horizontal lines without video signal. OK on scart output T971 OK IC950 OK. No beam limiter on 15 of IC950. Flash on the screen when changing channels.
• When TV started up, transistor (S2000AF) instantly burn out. (with circuit diagram extract)
• At Power On standby LED switches off immediately after switching on.
• White screen. Flyback lines.
• Does not fully go to TXT or only blue mix TXT. (part of circuit diagram displayed)
• Appliance whistles. Sound and picture present. Picture interference (lines approx one centimeter apart over the whole of the picture).
• Distorted vertical linearity. Barrel distortion. (picture attached)
• At the top edge of the picture an unusual stain effect appears and line tearing.
• Resistor R515 becomes defective. (extract of circuit diagram attached)
• No synchronisation during the first few mins. (part of circuit diagram displayed)
• Shuts down. (extract of circuit diagram attached)
• If switched to standby, appliance pulsates and can be heard in loudspeakers. (part of circuit diagram displayed)
• Power supply defective after a few days. (extract of circuit diagram attached) (21D61 tips)
• Automatic B/G-L detection does not work correctly with the Nicam sound carrier (TF1, FRANCE 2).
• Wavy vertical lines in the entire picture when cold. Picture jitters. (part of circuit diagram displayed) (21D61 tips)
• Vertical IC fails. (extract of circuit diagram attached)
• HV builds up briefly and then shuts down
• Horizontal collapse. after a while. (picture attached)
• Vertical jitter. when cold.
• Poor PSU start-up or BU defective. (part of circuit diagram displayed)
• Halts at switch on when cold. No start up. OK after a few attempts. (+ extract of circuit diagram) (21D61 tip from INTERFUNK)
• PSU chirps, at the same time bubbling and hum in loudspeakers. No functions. (part of circuit diagram displayed)
• High voltage transistor (S2000) defective. (with circuit diagram extract)
• Poor vertical linearity at the bottom, also E/W error.
• Vertical hum bars on picture, sometimes very visible and sometimes hardly at all.
• Cycles on/off.
• Comes on for a short time. (picture attached) (INTERFUNK - 21D61 information)
• Blue, vertical stripe in the right third of the picture.
• Vertical dark bands running from left to centre of picture and separated by approx. 5cm.
• Switches to standby when mains switch is plugged in. Switches off when using RCU. (+ extract of circuit diagram)
• Power supply hiccups.
• No TXT (intermittently). (21D61 INTERFUNK repair tip)
• Black picture. Sound OK. Picture is OK after restart. (+ extract of circuit diagram)
• Excessive brightness. in the centre. (with circuit diagram extract)
• Does not switch ON. No power light showing.
• Picture too big. (part of circuit diagram displayed)
• No tuning. only on certain channels. Dark screen. on the right.
• EHT is heard starting up then everything stops 4 secs later.
• No PSU start-up.
• After the appliance is switched off a large spot of light appears for several seconds in the middle of the screen. (with circuit diagram extract)
• Goes into safety mode at switch on. If FBT is unsoldered then HT is re-established. No apparent S/C in secondary of FBT. (part of circuit diagram displayed)
• Blue screen. Flyback lines. Audio OK .
• Focus problem. Blurred vertically, ok horizontally after replacing microprocessor and line transformer.
• Insufficient picture heigth (10cm) and severe linear distortion.
• Dark screen. on the right. (+ extract of circuit diagram) (21D61 tip from INTERFUNK)
• No picture. Hum in audio.
• Especially when cold some channels are not in the French standard. They remain in FM sound and inverted video. When warm and when changing programme suddenly picture and sound appear correctly. (picture attached)
• Only blue light at right in picture.
• PSU starts briefly, then no more HV. (picture attached)
• High voltage build up for short time then PSU switches off. (extract of circuit diagram attached)
• Picture distorted, shifted upwards and a little bit too wide.
• Poor adjustment of horizontal picture centering. (extract of circuit diagram attached)
• Strong blue dominance at top of picture. Rest of picture (approx half) ok. (picture attached)
• Picture and sound missing. Via scart socket with video recorder OK (extract of circuit diagram attached)
• Picture shifted to the left. Sometimes picture fails completely, then still only picture blanking stripes visible. (+ extract of circuit diagram)
• Vertical curtain-like stripes which may be distributed over the entire screen. (+ extract of circuit diagram)
• Picture shifted horizontally. (with circuit diagram extract)
• Noise in audio. (+ extract of circuit diagram) (service info for INTERFUNK -21D61)
• Wavy picture. at top. (with circuit diagram extract)
• At switch on picture is condensed tnen enlarged. Pops loudly at approx 2 pulses per sec. Intermittent blast from speakers. (part of circuit diagram displayed)
• Line transformer starts up with an amplitude of 400V blemished by many interference lines.
• Intermittent no image or yellow colouring. Knock sensitive. (picture attached)
• Lines in picture.
• Brightness varies. E/W fault. intermittently.
• Rattling noise or bubbling at start-up (when cold). (+ extract of circuit diagram)
• Dark picture. on the right. (part of circuit diagram displayed)
• Programming menu can not be accessed. (picture attached)
• Only snow in the picture, after changing the tuner the fault is still there.
• Line tearing. (part of circuit diagram displayed)
• Intermittently dead. (with circuit diagram extract)
• Eliminate safety mode of PSU.
• No start up after changing IC601. Nothing lights up on the front.
• DF-AF adjustment.
• From a cold start line output stage transistor fails.
• Text selection is not possible, takes only Mix or full text but not both. Also various other functions are defective.
• No tuning. Higher channels in band I/III/V are not received.
• At switch on appliance pulsated then reverts to standby again.
• Poor shading of picture, dark on one side and light on the other. (part of circuit diagram displayed) (21D61 tips)
• Picture amplitude is too weak.
• Line transformer starts up but no display, nothing on the screen and no sound. (part of circuit diagram displayed)
• Motorboating noise at switch on then goes into standby. When frame IC is unsoldered TV starts up. (part of circuit diagram displayed)
• PSU pulsates. Sound crackles. After few secs. appliance works fine.
• Vertical, bright stripe faintly visible in the right third of the picture.
• Black vertical bars on picture, mostly visible in AV with no video source. (+ extract of circuit diagram)
• Picture is distorted and changes. Loss of colours. (+ extract of circuit diagram)
• No start up, no standby light, variable voltage on pin 16 of IC701. (picture attached)
• The picture is too large and wavers.
• Starts with noise (approx. 2-3 seconds), then it operates normally. (with circuit diagram extract)
• Channel TF1 (channel 22) does not hold in SECAM: remains in PAL. The other channels are normal.
• Vertical collapse. (part of circuit diagram displayed)
• Random operation commands.
• Attempts to start with no result. (part of circuit diagram displayed)
• Shuts down. after start-up. (part of circuit diagram displayed)
• Loses sync at start-up for a few minutes. (INTERFUNK - 21D61 information)
• Picture collapse on half of the picture.
• Motorboating noise at switch on. Pin 13 of the TDA8372A is unsoldered. TV no longer pulsates. Power supply voltages ok. (with circuit diagram extract) (INTERFUNK - 21D61 information)
• Impossible to adjust synchronisation. Picture shifted towards left. Right side of picture reduced by 8cm. (extract of circuit diagram attached) (INTERFUNK - 21D61 information)
• Motorboating noise at switch on. When you change IC701 the TV starts up again, it is possible to switch it off and to start it up by using standby. Otherwise, the fault starts again. (with circuit diagram extract)
• No synchronisation (after start-up). (with circuit diagram extract)
• Instructions on how to put appliance into Service-Mode.
• Low brightness. Picture too big.
• The teletext contrast is considerably too high after installing the teletext decoder. (21D61 INTERFUNK repair tip)
• Pincushion distortion.
• In a grey area - independent of colour saturation - you can see 2 vertical zones approx 15cm wide, greeny blue in colour with coloured edges.
• Time constant switching over only occurs on memory sites 37 to 39 and AV.
• Picture appears slowly. (part of circuit diagram displayed)
• Impossible to adjust the horizontal synchronization. Picture has shifted 10cm to the left. TDA 8372A on pin 20 has already been replaced, sandcastle incorrect. Power supply is good. (part of circuit diagram displayed)
• Erratic functions. (picture attached)
• Picture with a 10cm vertical band on the right side. Negative picture behind this black band.
• Poor PSU start up. Severe crackle in the loudspeaker.
• Excessive HV. (extract of circuit diagram attached)
• Intermittently line tearing in the middle (approx. 20cm wide). (with circuit diagram extract)
• Picture has moved approx 10cm to the left. Vertical black bar with a few coloured streaks. Colour OK. (picture attached)
• No vertical deflection. intermittently.
• No colour (intermittently).
• Reduced contrast, especially on one side of the screen.
• Poor audio.
• Reduced vertical size.
• PSU fails intermittently. (picture attached)
• Dark picture. Stripes after a while. OK after warm-up. (extract of circuit diagram attached)
• Only standby LED lit. LED switches off at switch on then no function.
• Tripping.
• Switches off completely after switch on. No standby function. (with circuit diagram extract)
• E/W fault. (+ extract of circuit diagram)
• One side of picture is black.
• HV appears briefly and then disappears. (picture attached)
• Vertical IC (TDA3654) becomes hot, then fails after several hours. Picture OK. (+ extract of circuit diagram) (service info for INTERFUNK -21D61)
• Poor line and picture synchronisation when cold.
• Horizontal white line. (21D61 INTERFUNK repair tip)
• Black screen. Display flashes once at switch on.
• PSU can not be loaded with 60W incandescent lamp.
• Too wide picture and East/West pincushion curving outward. (part of circuit diagram displayed)
• White point when switching off with ON/OFF switch. No point in standby.
• Coloured lines (RGB test lines) in top of picture.
• Very pale picture which is shifted to the left. Voltage is correct. (+ extract of circuit diagram)
• Picture tearing.
• Output transistor (S2000) fails when started from cold.
• Faulty colour (green tinge, on upper picture edge, intermittently present). B/W picture OK. TXT and menu are OK too.
• Line output stage fails at switch on. With load (lamp) appliance can be switched on with squeaking noise. (extract of circuit diagram attached)
• Switches off immediately after plugging in mains. (+ extract of circuit diagram)
• White, horizontal lines at the top of the picture. Lines decrease after a while but never disappear completely.
• Centre of snowy picture is darker than edges. (with circuit diagram extract)
• Dead.
• Remains in standby after changing power IC. (picture attached)
• Will not select text, or will only select mix or full text but not both, various other functions faulty.
• Does not start from Standby.
• No audio (when cold).
• Intermittent block.
• Slow start-up. when cold. (+ extract of circuit diagram)
• PSU cannot be started from Stand By. 145V voltage in an unloaded condition is at approx 105V, the connected lamp does not light up, the voltage then collapses to approx 20V. (extract of circuit diagram attached)
• E/W-fault.
• No start-up. (part of circuit diagram displayed)
• Top third of screen has ragged vertical lines.
• No start-up (when cold).
• Hums at switch on, dies out slowly. (21D61 INTERFUNK repair tip)
• Horizontal jitter. Vertical jitter. (picture attached)
• PSU doesn't start up when cold. (+ extract of circuit diagram)
• Noise in the speakers and no start up or display on the front panel when switching on. (picture attached)
• HT starts up, appliance switches off immediately. Power supply with lamp OK but documentation states voltage must be 60-100V when pin 4 of line transformer disconnected and lamp connected to D765 60-100V. Voltage in this case is 145V.
• Intermittent loss of brightness, picture is black. Can be adjusted with RC. Or vice versa, picture is too light and can be adjusted.
• No functions. after a while.
• No picture content. Picture is greyish. (with circuit diagram extract)
• Convex picture. Defective lower linearity. (+ extract of circuit diagram)
• Slightly wavy picture in the middle of the screen. (part of circuit diagram displayed)
• Programmes change by themselves. RC is OK.
• Display flashing and rattles at switch on. (part of circuit diagram displayed)
• No vertical deflection. Horizontal line. Audio OK . (with circuit diagram extract)
• Double picture.
• Picture is brighter on the right. Poor synchronisation after program switch-over. Picture becomes brighter and darker in AV. (with circuit diagram extract)
• Secondary voltages appear for 1 to 2 secs. then nothing else. Standby LED switches off.
• Sound channel 1 and 2 voltage level adjustment.
• Illegible display. (extract of circuit diagram attached)
• Stops after 5 seconds. No standby LED. (+ extract of circuit diagram) (21D61 tip from INTERFUNK)
• PSU switches from standby to safety mode at switch on.
• No horizontal synchronisation. (+ extract of circuit diagram)
• Picture with vertical and horizontal lines (when cold).
• Dark picture. intermittently.
• No start up after changing FBT and constant whistling noise. (part of circuit diagram displayed)
• No horizontal or vertical deflection.
• Unusual TXT.
• Dark picture.
• Occasionally blue screen. Picture ok when G2 adjusted then disappears again. When pressed too much picture remains incorrect then disappears.
• Reduced raster size. (+ extract of circuit diagram)
• Does not go into TXT mode. Mixed mode possible.
• Flashing picture. (+ extract of circuit diagram)
• Remains in standby. Starts up when wiper forced. 88 on display. No picture and no sound. Goes into standby as soon as switch is released. (with circuit diagram extract)
• Stuck in standby; RC ineffective. Stanby LED flickers. (extract of circuit diagram attached)
• Distorted picture. on the right. (part of circuit diagram displayed) (INTERFUNK - 21D61 information)
• No picture (intermittently).
• Switches on for a short time with RC, then switches off. "I" and "II" flicker on display. LED doesn't light. Starts up again with RC, if previously disconnected from mains.
• Black bar on the right side of the screen. Similar to displacement. (extract of circuit diagram attached)
• Stuck in standby.
• AV correction.
• Line transistor S2000AF defective at switch on from cold. (part of circuit diagram displayed)
• Grey picture at switch on and sound which disappears after 15 mins. Grey screen with frizzy line on the sides when pressing G2.
• Resistor R775 is defective.
• Line synchronisation available only after 2 mins.
• Picture goes off after 1 minute; very low contrast, ok through scart. (+ extract of circuit diagram)
• Vertical or horizontal picture shaking both when hot and cold. (with circuit diagram extract)
• Switches to standby (intermittently).
• Control unit processor is defective. (extract of circuit diagram attached)
• No picture. on lower half screen. (+ extract of circuit diagram)
• No functions.
• Switches to protection mode. at start-up. (+ extract of circuit diagram)
• At switch ON, set screams. Pressing on the on/off switch gives same condition. Standby LED's off.
• Buzzing at start-up.
• Line tearing. at top. (picture attached) (service info for INTERFUNK -21D61)
• Horizontal stripe. in the centre.
• Does not start up each time. When it functions, whistling and modulation of picture. This gets less in time.
• Line frequency changes downward (squeaking, whistling). (21D61 tips)
• Excessive horizontal size. (part of circuit diagram displayed)
• As described in the manual it is possible to operate the video recorder on all program places through the aerial. But some appliances only change over on channels 37-39.
• Dark screen at start up. Line transformer ok with flyback lines. Top 2 or 3 lines ok. In PB apparently functions around the IC TDA8372A. (extract of circuit diagram attached)
• No horizontal synchronisation. at start-up. (picture attached)
• Picture shifted to the left, too small and not adjustable. (+ extract of circuit diagram)
• Horizontal synchronisation fault even after replacing TDA8372. Weak adjustment with pot R634. Line synchronisation OK. Comparator OK. Horizontal linearity is OK. (extract of circuit diagram attached)
• No colour. (INTERFUNK - 21D61 information)
• Dark picture on 2/3 of screen on the left but brighter on 1/3 of screen on the right. (part of circuit diagram displayed)
• Horizontal picture position is incorrect, 5cm to the left. No picture intermittently. (with circuit diagram extract)
• Shadowing effect, left side of picture is brighter than the right one. (part of circuit diagram displayed) (21D61 INTERFUNK repair tip)
• Vertical and horizontal synchronisation available only after 2 mins.
• Transistor T701 fails when appliance is switched off and on.
• Ok with signal. Without signal: unstable line frequency, line stage transformer makes a loud whistling noise and T511 (scanning transistor) shorts. (+ extract of circuit diagram)
• Loud noise. at start-up.
• Standby display lights up for a short time. Line output stage attempts to function, but switches off immediately.
• Excessive brightness. Flyback lines. (with circuit diagram extract)
• Line foldover by start-up. No sound. After warm-up, picture and sound are OK. Sync is still unstable.
• No TXT.
• Pulsating picture. (+ extract of circuit diagram)