25D61 / INTERFUNK [TV]

• Builds up high voltage for a short time and then switches off. (with circuit diagram extract)
• Resistor R775 is defective.
• Line transformer starts up but no display, nothing on the screen and no sound. (with circuit diagram extract) (INTERFUNK - 25D61 information)
• Horizontal shaking. when cold.
• Occasionally blue screen. Picture ok when G2 adjusted then disappears again. When pressed too much picture remains incorrect then disappears.
• White horizontal stripe about 5 cm from the bottom. Picture content bellow stripe is altered and noisy.
• Convex picture. Defective lower linearity. (part of circuit diagram displayed)
• Cycles on/off.
• Blanking interval on left side of picture, colour flickers and screen dark after a while.
• 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)
• No picture content. Picture is greyish. (+ extract of circuit diagram)
• 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.
• Horizontal jitter. Vertical jitter. (+ extract of circuit diagram)
• 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.
• Vertical IC fails. (extract of circuit diagram attached)
• Picture shifted horizontally. (with circuit diagram extract)
• Excessive brightness. Flyback lines. (+ extract of circuit diagram)
• HV appears briefly and then disappears. (+ extract of circuit diagram)
• Unusual TXT.
• Wavy vertical lines in the entire picture when cold. Picture jitters. (extract of circuit diagram attached)
• Intermittent no image or yellow colouring. Knock sensitive. (picture attached)
• Switches to protection mode. at start-up. (+ 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. (+ extract of circuit diagram)
• AV correction.
• Dead. after start-up.
• Unstable horizontal picture.
• Random operation commands.
• Picture is brighter on the right. Poor synchronisation after program switch-over. Picture becomes brighter and darker in AV. (extract of circuit diagram attached)
• White screen. Flyback lines.
• Display flashing and rattles at switch on. (part of circuit diagram displayed)
• Horizontal jitter. when cold.
• Excessive HV. (part of circuit diagram displayed)
• Can be switched to standby only if power plug is pulled out.
• No start up after changing IC601. Nothing lights up on the front.
• Intermittent flyback lines. Grey scale varies intermittently. Possibly no picture.
• No vertical deflection. Only a horizontal bright line appears on CRT. Audio OK. (extract of circuit diagram attached)
• 10cm black bar on the right of the screen. Voltages ok, corrections work. (extract of circuit diagram attached)
• Poor line and picture synchronisation when cold.
• Switches off completely after switch on. No standby function. (+ extract of circuit diagram)
• Picture shaking in a random direction. (with circuit diagram extract)
• Noise in audio. (part of circuit diagram displayed)
• Coloured lines (RGB test lines) in top of picture.
• High voltage runs high. Flashover all over.
• E/W trapezium does not function.
• No synchronisation (after start-up). (part of circuit diagram displayed)
• No start-up from standby.
• No audio (when cold).
• Picture shifted to the left, too small and not adjustable. (with circuit diagram extract)
• Black picture. Sound OK. Picture is OK after restart. (part of circuit diagram displayed)
• Operation commands are not carried out.
• Line synchronisation available only after 2 mins.
• White, horizontal lines at the top of the picture. Lines decrease after a while but never disappear completely.
• Black vertical bars on picture, mostly visible in AV with no video source. (with circuit diagram extract)
• High voltage transistor (S2000) defective. (+ extract of circuit diagram)
• Picture rolls. when cold. (extract of circuit diagram attached)
• PSU switches from standby to safety mode at switch on. (25D61 INTERFUNK repair tip)
• Picture appears slowly. (+ extract of circuit diagram)
• PSU doesn't start-up or only after a while. Cracking sound.
• Top third of screen has ragged vertical lines.
• Wavy picture. at top. (extract of circuit diagram attached)
• Vertical curtain-like stripes which may be distributed over the entire screen. (+ extract of circuit diagram)
• DF-AF adjustment.
• Line tearing. (extract of circuit diagram attached)
• Horizontal line.
• Picture only appears about 3 mins after switch on, when appliance is cold.
• Dark picture. on the right. (with circuit diagram extract)
• Poor audio.
• Resistor R515 becomes defective. (picture attached)
• Shuts down. (part of circuit diagram displayed)
• Horizontal stripe. in the centre.
• At the top edge of the picture an unusual stain effect appears and line tearing.
• Poor PSU start-up or BU defective. (extract of circuit diagram attached)
• Lines in picture.
• Picture is out of alignment horizontally. 10cm black bar on the right. (with circuit diagram extract)
• 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.
• Secondary voltages appear for 1 to 2 secs. then nothing else. Standby LED switches off.
• HV builds up briefly and then shuts down
• Flashing picture. (extract of circuit diagram attached) (service info for INTERFUNK -25D61)
• High voltage build up for short time then PSU switches off. (extract of circuit diagram attached)
• Does not switch to standby. (part of circuit diagram displayed)
• EHT is heard starting up then everything stops 4 secs later.
• Standby display lights up for a short time. Line output stage attempts to function, but switches off immediately.
• When TV started up, transistor (S2000AF) instantly burn out. (with circuit diagram extract) (service info for INTERFUNK -25D61)
• Defective linearity.
• 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. (part of circuit diagram displayed) (INTERFUNK - 25D61 information)
• 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.
• Programmes change by themselves. RC is OK.
• Power supply hiccups.
• Illegible display. (extract of circuit diagram attached)
• Only blue light at right in picture.
• Horizontal synchronisation fault, picture shifted towards left side. (+ extract of circuit diagram)
• PSU starts briefly, then no more HV. (part of circuit diagram displayed)
• Dead. (25D61 tip from INTERFUNK)
• Bright raster. Flyback lines.
• No colour.
• 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 attached) (service info for INTERFUNK -25D61)
• 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. (+ extract of circuit diagram)
• Focus problem. Blurred vertically, ok horizontally after replacing microprocessor and line transformer.
• No start-up. (picture attached)
• Reduced vertical size.
• Rattling noise or bubbling at start-up (when cold). (+ extract of circuit diagram)
• Loud noise. at start-up.
• Vertical lines. No colour. after a while.
• 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. (part of circuit diagram displayed)
• No HT output from power supply. OK in standby. (extract of circuit diagram attached)
• Hums at switch on. (with circuit diagram extract)
• Dark picture on 2/3 of screen on the left but brighter on 1/3 of screen on the right. (extract of circuit diagram attached)
• Very slight flickering with a light picture. (extract of circuit diagram attached)
• Vertical jitter. when cold.
• Slightly wavy picture in the middle of the screen. (picture attached)
• In a grey area - independent of colour saturation - you can see 2 vertical zones approx 15cm wide, greeny blue in colour with coloured edges.
• Switches off immediately after plugging in mains. (+ extract of circuit diagram)
• E/W-fault.
• Picture shifted to the left. (extract of circuit diagram attached)
• Reduced contrast, especially on one side of the screen.
• Black bar on the right side of the screen. Similar to displacement. (+ extract of circuit diagram)
• Centre of snowy picture is darker than edges. (extract of circuit diagram attached)
• Attempts to start with no result. (picture attached)
• Buzzing at start-up.
• Poor synchronisation. No picture. after a while. (service info for INTERFUNK -25D61)
• Distorted picture. on the right. (extract of circuit diagram attached)
• Picture takes 15 secs. to appear. Sound ok and EHT present.
• Excessive brightness. in the centre. (extract of circuit diagram attached)
• Picture too big. (extract of circuit diagram attached)
• Automatic B/G-L detection does not work correctly with the Nicam sound carrier (TF1, FRANCE 2).
• Picture amplitude is too weak.
• Dark screen, only diffuse glow.
• Does not fully go to TXT or only blue mix TXT. (extract of circuit diagram attached)
• Does not start from Standby.
• Picture is distorted and changes. Loss of colours. (with circuit diagram extract)
• One side of picture is black.
• Text selection is not possible, takes only Mix or full text but not both. Also various other functions are defective.
• Only snow in the picture, after changing the tuner the fault is still there.
• Strong blue dominance at top of picture. Rest of picture (approx half) ok. (part of circuit diagram displayed)
• Bright picture. on the right. Dark picture. on the left. (+ extract of circuit diagram)
• Intermittent loss of brightness, picture is black. Can be adjusted with RC. Or vice versa, picture is too light and can be adjusted.
• No HV.
• At start up the power supply starts up for 2 secs then the appliance apparently goes into safety mode. No fault on the secondary.
• Tripping.
• Blank screen with purple haze at left hand side. (extract of circuit diagram attached)
• Too wide picture and East/West pincushion curving outward. (with circuit diagram extract)
• Grey picture at switch on and sound which disappears after 15 mins. Grey screen with frizzy line on the sides when pressing G2.
• Whenever a function is requested display lights up then switches off.
• Picture shifted to the left. Sometimes picture fails completely, then still only picture blanking stripes visible. (+ extract of circuit diagram) (25D61 INTERFUNK repair tip)
• Comes on for a short time. (+ extract of circuit diagram)
• Control unit processor is defective. (part of circuit diagram displayed)
• NICAM check.
• Power supply seems to remain in safety mode. (picture attached)
• Noise in picture. Poor horizontal synchronisation.
• Instructions on how to put appliance into Service-Mode.
• Power supply defective after a few days. (part of circuit diagram displayed)
• Line BU voltage = 140V. Value of capacitor C701 (in PSU) illegible. Still no display if line BU disconnected. (extract of circuit diagram attached)
• No picture (intermittently).
• Excessive horizontal size. (part of circuit diagram displayed)
• Very pale picture which is shifted to the left. Voltage is correct. (extract of circuit diagram attached)
• LED lights up briefly then nothing more.
• Does not start up each time. When it functions, whistling and modulation of picture. This gets less in time.
• Reduced raster size. (part of circuit diagram displayed)
• NICAM is missing.
• Left picture side is brighter, even via AV. (extract of circuit diagram attached)
• Only standby LED lit. LED switches off at switch on then no function.
• No PSU start-up.
• PSU can not be loaded with 60W incandescent lamp.
• Picture with a 10cm vertical band on the right side. Negative picture behind this black band.
• No TXT (intermittently).
• Intermittently line tearing in the middle (approx. 20cm wide). (picture attached)
• Poor shading of picture, dark on one side and light on the other. (+ extract of circuit diagram)
• At Power On standby LED switches off immediately after switching on.
• Switches to standby when mains switch is plugged in. Switches off when using RCU. (+ extract of circuit diagram)
• Vertical line tearing. intermittently.
• Intermittently dead. (part of circuit diagram displayed)
• Does not go into text mode, mix mode is not possible.
• Vertical hum bars on picture, sometimes very visible and sometimes hardly at all.
• Channel TF1 (channel 22) does not hold in SECAM: remains in PAL. The other channels are normal.
• Horizontal synchronisation fault even after replacing TDA8372. Weak adjustment with pot R634. Line synchronisation OK. Comparator OK. Horizontal linearity is OK. (part of circuit diagram displayed)
• Insufficient picture heigth (10cm) and severe linear distortion.
• No TXT. (service info for INTERFUNK -25D61)
• Stops after 5 seconds. No standby LED. (picture attached)
• Few segments of the display too bright. Doesn't respond to commands.
• Long picture at start up, black screen with rainbow spots.
• Stuck in standby.
• Picture has moved approx 10cm to the left. Vertical black bar with a few coloured streaks. Colour OK. (part of circuit diagram displayed)
• Double picture.
• Motorboating noise at switch on. Pin 13 of the TDA8372A is unsoldered. TV no longer pulsates. Power supply voltages ok. (part of circuit diagram displayed)
• Collapses at start up, then switches off. (25D61 INTERFUNK repair tip)
• Pincushion distortion.
• Eliminate safety mode of PSU.
• Erratic functions. (+ extract of circuit diagram)
• No horizontal synchronisation. at start-up. (extract of circuit diagram attached)
• Switches off when selecting a function via RC.
• Does not go into TXT mode. Mixed mode possible.
• Picture shifted to the right.
• Does not switch on. Fluttering noise from the loudspeakers. (+ extract of circuit diagram)
• Line transformer starts up with an amplitude of 400V blemished by many interference lines.
• Approx. 1cm bright, vertical line on the right hand side of the picture approx. 10cm from the edge.
• Stuck in standby; RC ineffective. Stanby LED flickers. (with circuit diagram extract)
• Goes into PAL reception when in NICAM reception on channel 64, programme N1. (INTERFUNK - 25D61 information)
• 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.
• Vertical IC (TDA3654) becomes hot, then fails after several hours. Picture OK. (+ extract of circuit diagram)
• Shuts down. after start-up. (picture attached)
• Line tearing. at top. (with circuit diagram extract)
• Unclear picture with Hum content.
• No vertical deflection. Horizontal line. Audio OK . (picture attached)
• PSU doesn't start up when cold. (extract of circuit diagram attached)
• Line foldover by start-up. No sound. After warm-up, picture and sound are OK. Sync is still unstable.
• Hums at switch on, dies out slowly.
• FBT blows after a few mins. (picture attached)
• 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.
• Slow start-up. when cold. (with circuit diagram extract)
• 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.
• PSU pulsates. Sound crackles. After few secs. appliance works fine.
• At switch on picture is condensed tnen enlarged. Pops loudly at approx 2 pulses per sec. Intermittent blast from speakers. (extract of circuit diagram attached)
• Poor vertical linearity at the bottom, also E/W error.
• Picture distorted, shifted upwards and a little bit too wide. (25D61 tip from INTERFUNK)
• PSU is defective. 300V is present. (25D61 tips)
• Vertical dark bands running from left to centre of picture and separated by approx. 5cm. (service info for INTERFUNK -25D61)
• White point when switching off with ON/OFF switch. No point in standby.
• The picture is too large and wavers.
• Approx 20cm wide dark area in centre of picture and line tearing.
• Starts with noise (approx. 2-3 seconds), then it operates normally. (picture attached)
• No start up, no standby light, variable voltage on pin 16 of IC701. (extract of circuit diagram attached) (service info for INTERFUNK -25D61)
• Dark screen. on the right. (extract of circuit diagram attached)
• Hum bars, especially on yellow or orange background.
• Vertical collapse. (picture attached) (25D61 INTERFUNK repair tip)
• No tuning. Higher channels in band I/III/V are not received.
• Intermittent block.
• No picture. No audio. (with circuit diagram extract)
• 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.
• Loses sync at start-up for a few minutes.
• Time constant switching over only occurs on memory sites 37 to 39 and AV.
• Shadowing effect, left side of picture is brighter than the right one. (+ extract of circuit diagram)
• Picture is too wide. E/W distorted.
• 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. (part of circuit diagram displayed)
• Standby display lights up briefly, then no function.
• From a cold start line output stage transistor fails.
• Transistor T701 fails when appliance is switched off and on. (25D61 tip from INTERFUNK)
• Does not switch ON. No power light showing.
• Motorboating noise at switch on then goes into standby. When frame IC is unsoldered TV starts up. (extract of circuit diagram attached)
• PSU fails intermittently. (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)
• Whistling HT. No start up due to incorrect HT frequency. May blow S2000 immediately. (picture attached)
• Black screen. Display flashes once at switch on.
• No raster sync in HF. Ok in scart. (part of circuit diagram displayed)
• Dark picture. intermittently.
• Horizontal picture position is incorrect, 5cm to the left. No picture intermittently. (extract of circuit diagram attached)
• Blank raster. (25D61 tips)
• Horizontal white line.
• Vertical, bright stripe faintly visible in the right third of the picture.
• Picture shifted to the left. Alignment works normally. (with circuit diagram extract)
• Dark picture.
• Switches to standby (intermittently).
• No picture. on lower half screen. (part of circuit diagram displayed)
• No start up after changing FBT and constant whistling noise. (with circuit diagram extract)
• Blue, vertical stripe in the right third of the picture.
• The teletext contrast is considerably too high after installing the teletext decoder.
• No synchronisation during the first few mins. (part of circuit diagram displayed)
• Brightness differs between left and right hand side of the screen.
• Dark picture. Stripes after a while. OK after warm-up. (part of circuit diagram displayed)
• No tuning. only on certain channels. Dark screen. on the right. (25D61 INTERFUNK repair tip)
• Brightness varies. E/W fault. intermittently.
• Excessive vertical size. Vertical foldover at bottom.
• Noise in the speakers and no start up or display on the front panel when switching on. (part of circuit diagram displayed)
• At switch on appliance pulsated then reverts to standby again. (25D61 tip from INTERFUNK)
• Picture collapse on half of the picture.
• Picture goes off after 1 minute; very low contrast, ok through scart. (+ extract of circuit diagram)
• Impossible to adjust synchronisation. Picture shifted towards left. Right side of picture reduced by 8cm. (extract of circuit diagram attached)
• Sound cracks. Switches off. Display stays. Can be restarted with RC. (part of circuit diagram displayed)
• No start-up (when cold).
• If switched to standby, appliance pulsates and can be heard in loudspeakers. (part of circuit diagram displayed) (25D61 tips)
• No functions. Red LED does not flash.
• Bright vertical stripes. No picture content. Sound OK. (extract of circuit diagram attached)
• Blocked control processor.
• Control unit does not function. Does not switch on. (part of circuit diagram displayed)
• No horizontal or vertical deflection. (service info for INTERFUNK -25D61)
• After the appliance is switched off a large spot of light appears for several seconds in the middle of the screen. (extract of circuit diagram attached)
• Vertical and horizontal synchronisation available only after 2 mins. (25D61 tip from INTERFUNK)
• Distorted vertical linearity. Barrel distortion. (+ extract of circuit diagram)
• Poor PSU start up. Severe crackle in the loudspeaker.
• No functions.
• Ok with signal. Without signal: unstable line frequency, line stage transformer makes a loud whistling noise and T511 (scanning transistor) shorts. (picture attached)
• Line BU is abnormally hot.
• Programming menu can not be accessed. (+ extract of circuit diagram)
• Afterglow on deflection tube after switch off.
• Enter service mode.
• No colour (intermittently).
• Picture and sound missing. Via scart socket with video recorder OK (part of circuit diagram displayed)
• When appliance receives in Nicam stereo, the TV goes into PAL.
• HV arcing. (with circuit diagram extract)
• No picture. Hum in audio.
• Pulsating picture. (with circuit diagram extract) (25D61 INTERFUNK repair tip)
• Remains in standby after changing power IC. (+ extract of circuit diagram)
• 88 shown on LED display.
• Unstable picture. (+ extract of circuit diagram)
• Halts at switch on when cold. No start up. OK after a few attempts. (part of circuit diagram displayed)
• No picture. Audio OK . (extract of circuit diagram attached)
• After approx 20 mins colour TV switches off. Horizontal drive fails. U1 for the line end stage is still present. Horizontal driver is ok.
• Line output stage fails at switch on. With load (lamp) appliance can be switched on with squeaking noise. (with circuit diagram extract)
• T501 fails repeatedly.
• At switch ON, set screams. Pressing on the on/off switch gives same condition. Standby LED's off.
• No control and cannot be switched off when started up from standby.
• Output transistor (S2000) fails when started from cold.
• Vertical or horizontal picture shaking both when hot and cold. (with circuit diagram extract)
• No functions. after a while.
• Cuts out after switch on, soft hum from the speakers in standby mode. (INTERFUNK - 25D61 information)
• Faint and too dark picture. Low brightness, contrast cannot be adjusted. Colour is adjustable.
• No vertical deflection. intermittently.
• Appliance whistles. Sound and picture present. Picture interference (lines approx one centimeter apart over the whole of the picture).
• Low brightness. Picture too big.
• 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. (+ extract of circuit diagram)
• Will not select text, or will only select mix or full text but not both, various other functions faulty.
• Sound channel 1 and 2 voltage level adjustment. (25D61 tip from INTERFUNK)
• Picture with vertical and horizontal lines (when cold). (service info for INTERFUNK -25D61)
• PSU chirps, at the same time bubbling and hum in loudspeakers. No functions. (with circuit diagram extract)
• 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.
• Horizontal collapse. after a while. (extract of circuit diagram attached)
• At switch on, lights light up for an instant, voltage which ought to reach 145V increases to 60V but then goes back to 0V. (part of circuit diagram displayed)
• No E/W correction. (+ extract of circuit diagram)
• Line frequency changes downward (squeaking, whistling).
• No horizontal synchronisation. (part of circuit diagram displayed) (INTERFUNK - 25D61 information)
• 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. (service info for INTERFUNK -25D61)
• Picture tearing.
• Line transistor S2000AF defective at switch on from cold. (picture attached)
• Poor adjustment of horizontal picture centering. (part of circuit diagram displayed)
• No tuning.
• E/W fault. (+ extract of circuit diagram)