20GR1050 / PHILIPS [TV]

• Defective purity.
• Streaks in picture. Picture pulls and rolls intermittently.
• No voltage from PSU. (picture attached)
• Print with linearity coil pos. 5800.
• High voltage transistor defective after a while.
• Unstable tuning.
• How to de-activate volume limiter.
• Colours flicker and disappears.
• No functions. Hum in loudspeaker. No LED lit. (service info for PHILIPS -20GR1050)
• Unable to tune or set volume in Prefix mode.
• Line out of phase. Black band in centre of screen. No colour.
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (part of circuit diagram displayed) (service info for PHILIPS -20GR1050)
• Does not start up at once from cold.
• Reluctant to start up from cold.
• No audio.
• White balance adjustment.
• Power supply does not oscillate. (picture attached)
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink. (20GR1050 tips)
• Line output stage only starts up for a short time. (picture attached)
• After replacement of the line output transistor BUT12, picture with trapezoid effect, BUT12 overheats and goes defective again. (part of circuit diagram displayed)
• Programme channel search cannot be called up. (20GR1050 tips)
• No OSD. Picture OK . (service info for PHILIPS -20GR1050)
• Local controls inoperative.
• Error codes.
• Picture shifted to the right. (picture attached)
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (picture attached)
• To release hotel mode (child lock).
• Excessive brightness.
• Dead, very slight whistle from PSU.
• Does not switch on, standby LED OK. (20GR1050 PHILIPS repair tip)
• No HV.
• Intermittently narrow picture, but corrects itself shortly after.
• Enable Hotel mode.
• Dead. Low level buzz from loudspeaker. (picture attached)
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• Comes on for a short time.
• Dead. Low frequency noise on sound. (PHILIPS - 20GR1050 information)
• No switch on. Weak whistling noise from PSU. LED is OFF.
• Picture passes out in the centre.
• Tripping. (with circuit diagram extract) (PHILIPS - 20GR1050 information)
• Tuning menu can not be called. All other functions OK.
• Sound goes to max. intermittently and HT varies. (extract of circuit diagram attached)
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• Blank or green raster. Flyback lines. Faint picture or normal picture. (picture attached)
• Strongly distorted sound by low volume.
• Difficultly in tuning to correct position.
• Programme tuning difficulty, stations shifted on tuning bar. (with circuit diagram extract) (20GR1050 PHILIPS repair tip)
• Change of C2523.
• Failures in the power supply. (picture attached)
• To improve performance with prerecorded cassettes. (extract of circuit diagram attached)
• Line tearing and rope effect.
• Unstable tuning.
• Slow hiccup (with circuit diagram extract)
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (part of circuit diagram displayed)
• Horizontal white line.
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
• Switches to standby. (extract of circuit diagram attached)
• Change of C2523.
• No sound. No picture. Faint motorboating noise.
• Right hand side of screen has a line.
• Excessive vertical size.
• Bright flash on screen and no picture or sound after a few minutes. (with circuit diagram extract)
• Intermittent colour and intermittent dark vertical bar on picture.
• No sound or picture. Low hum from speaker. (with circuit diagram extract)
• Occasionally appliance does not switch on from standby. No further functions are possible. (PHILIPS - 20GR1050 information)
• Dead due to action of over voltage protection circuit. (PHILIPS - 20GR1050 information)
• 10V on 95V line. (picture attached)
• No start up. No standby. Attempts to start up, but fails.
• No colour and vertical black bar across screen.
• No start-up. when cold. (picture attached)
• LED switches on then off immediately.
• Unregulated power supply. Pulsating picture and surging sound. (part of circuit diagram displayed)
• Microprocessor screening plate. (picture attached)
• Line output transistor fails repeatedly. (extract of circuit diagram attached)
• Sound increases intermittently or "pops", especially during bright scenes. (with circuit diagram extract)
• Microcomputers and screening plate.
• Vertical collapse. (part of circuit diagram displayed) (service info for PHILIPS -20GR1050)
• Dead. Low hum.
• Appliance does not function with standby light flashing.
• How to de-activate Hotel mode.
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
• Menu rolling. (picture attached)
• Colours flickers and disappears.
• New IR receiver.
• Control panel cover.
• Programming unoperational. Limited sound adjustment possible.
• New infra red receiver.
• No frame or short frame. (part of circuit diagram displayed)
• Appliance can not be programmed. Search does not function. Only limited volume control.
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• Line output stage does not start up. (with circuit diagram extract)
• Poor reproduction of copy protected tapes. (with circuit diagram extract)
• Whistling from PSU. (extract of circuit diagram attached)
• To put into hotel mode. (20GR1050 PHILIPS repair tip)
• Search jumps on UHF.
• No picture. Audio OK . (20GR1050 PHILIPS repair tip)
• Colour sync adjustment procedure.
• Power supply fault finding. (part of circuit diagram displayed)
• Field collapse normally with blank picture. (extract of circuit diagram attached) (20GR1050 tip from PHILIPS)
• Initial volume level is higher than maximum Hotel mode setting.
• No +9V, line output stage is OK. (+ extract of circuit diagram)
• Picture separating line appears. Whistling.
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (part of circuit diagram displayed)
• Programs and PP-settings cannot be changed.
• Line output transistor replacement.
• Line output transistor TR7528 fails at switch on.
• Picture displays lines and strange foldover effect at centre.
• Focus adjustment.
• How to reset microprocessor.
• Programme tuning difficulty. Stations has shifted on tuning bar.
• Dead when switched on via mains switch. Though appliance is on, red LED flashes. Can be switched over to standby. If left in standby for 1 hour and then switched on via RC, functions.
• Memory loss. (with circuit diagram extract)
• Colour amplitude and phase adjustment procedure.
• Difficult startup. Rattling sound from line output trafo.
• Reduced vertical size. at top.
• How to de-activate Hotel-Mode.
• No functions. Slow start-up. (with circuit diagram extract)
• Green screen and at other times no tuning. (part of circuit diagram displayed)
• Becomes defective immediately after switch on.
• Store lock on the appliance.
• Hotel Mode activates by itself. (with circuit diagram extract)
• The following production changes were introduced to prevent the set coming on in the store lock mode when switched on from standby. (+ extract of circuit diagram)
• +B very high. (part of circuit diagram displayed)
• The TV cannot hold the picture.
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault.
• Difficult to tune programmes, stations shifted on tuning bar.
• Whistling.
• Colour disappears with VCR-scan (picture search). (+ extract of circuit diagram)
• No regulation. (+ extract of circuit diagram)
• Excessive HV. after a while.
• Dim picture with Hanover bars.
• R-Y and B-Y discriminator adjustment procedure. (extract of circuit diagram attached)
• Does not start. Slight buzzing in loudspeaker.
• Correction to service manual LOT winding.
• To remove store/lock.
• Replacement of TDA7052 with a TDA7052A.
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• Volume change with great fluctuations in brightness. (extract of circuit diagram attached)
• Initial volume level is higher than maximum Hotel mode setting.
• No start up from cold and humming.
• Buzz in audio (intermittently). (with circuit diagram extract)
• Dark picture.
• Rolling or jittering picture. (extract of circuit diagram attached)
• Change of C2523.
• No sound or raster. The 95V HT supply is present at the line output stage but there is no line drive. (picture attached)
• SOPS defective. (picture attached)
• Control micro processors. (PHILIPS - 20GR1050 information)
• Picture fails for a short time. (picture attached)
• No function. When switching on with RC, standby LED lights up. (part of circuit diagram displayed)
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (extract of circuit diagram attached)
• Change of C2523.
• No switch on after activating mains switch. Whistling noise. (with circuit diagram extract)
• Only half a picture. (+ extract of circuit diagram)
• Set goes accidentally into hotel mode.
• Line output transistor running hot. (with circuit diagram extract)
• No tuning. No channel lock. (with circuit diagram extract)
• Vertical roll. (+ extract of circuit diagram)
• Chopper inoperative. (picture attached)
• Volume can't be tuned down. No tuning with RC. (part of circuit diagram displayed)
• Interference in audio. Interference in picture. (with circuit diagram extract)
• No picture. (extract of circuit diagram attached)
• Humming, motor noise and other unusual noises. Normal picture.
• Line transistor 7528 blows within 1 sec. (picture attached)
• Green picture.
• Does not regulate +95V.
• No tuning bar when install button pressed and set not in hotel mode. (+ extract of circuit diagram) (service info for PHILIPS -20GR1050)
• No tuning. (+ extract of circuit diagram)
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• Sound varies with picture content.
• No picture (when cold). (20GR1050 tip from PHILIPS)
• Picture shifted to the left. intermittently. Line tearing. intermittently. (extract of circuit diagram attached)
• Sound varies with picture content.
• Green raster. Faint picture. Flyback lines.
• No start-up. Standby LED flashes .
• No start up, just a buzzing noise in speakers. (part of circuit diagram displayed)
• No operation.
• Horizontal oscillator adjustment procedure. (service info for PHILIPS -20GR1050)
• Green screen with flyback line. No picture. OSD OK.
• Stations won't change. Picture and sound OK. Other functions OK.
• Picture shifted horizontally. (with circuit diagram extract)
• After operating for one hour it is no longer possible to switch over programmes not even from the front panel. Appliance must be switched on and off then it is possible to change channels.
• No picture. No sound. Purring sound in loudspeaker. (picture attached)
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• Red picture. Flyback lines.
• Cannot be programmed and search does not function. Only limited volume adjustable.
• Search jumps on UHF. (20GR1050 tip from PHILIPS)
• Defective IC7103 SV-production. (+ extract of circuit diagram)
• Intermittent destruction of line o/p transistor. (extract of circuit diagram attached) (service info for PHILIPS -20GR1050)
• Enable Hotel mode. Disable hotel mode.
• Buzzing from PSU. when cold. (extract of circuit diagram attached) (service info for PHILIPS -20GR1050)
• When switching on, only a 10cm stripe on top of screen, the rest of screen is black with flyback lines. After a while, stripe becomes wider. (+ extract of circuit diagram)
• White unmodulated raster. Picture missing. (+ extract of circuit diagram)
• Vertical line. on the right half screen. (extract of circuit diagram attached)
• Dead set. Tries to start.
• The TV does not stop during the tuning phase.
• After working normally for a while the TV blocks in any position. The functions do not work.
• Dead. At switch on the stand by LED flashes.
• Picture appears slowly.
• Delay RF AGC adjustment procedure.
• Appliance will not switch on at times, but hums in the power supply section. (20GR1050 tips)
• Wavy picture. on the right.
• Stuck in hotel mode. (20GR1050 PHILIPS repair tip)
• No vertical deflection. (+ extract of circuit diagram)
• Low audio. (picture attached)
• No colour.
• Slow start up of power supply. (picture attached)
• Excessive horizontal size.
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (picture attached)
• No tuning - no channels.
• No function, starts up from standby, then goes out.
• Line output transistor becomes warm and in the course of time it becomes defective. (picture attached)
• Horizontal hold adjustment procedure. (20GR1050 tip from PHILIPS)
• +9V supply modification. (extract of circuit diagram attached)
• Poor synchronisation. when cold. (picture attached)
• PSU peeps +95 is ca 0,8v
• Tuning procedure.
• No start-up. Buzzing from speakers and working noise of PSU.
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (picture attached)
• No functions. Sound buzzes in loudspeaker. (+ extract of circuit diagram)
• "Store" key does not work. (with circuit diagram extract)
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• Blue picture. Coloured lines.
• Low 5V to micro chip. (extract of circuit diagram attached)
• No audio.
• LED does not flash. Slight buzz in appliance. (extract of circuit diagram attached)
• The switched-mode power supply cannot be loaded.
• Automatic fine tuning (AFT) field alignment procedure.
• Blank raster. OSD OK .
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (part of circuit diagram displayed)
• No colour. (with circuit diagram extract) (PHILIPS - 20GR1050 information)
• Volume varies. depending on picture content. (+ extract of circuit diagram)
• No or intermittent start-up. (part of circuit diagram displayed)
• Picture shifts. (+ extract of circuit diagram)
• SIF DET adjustment procedure.
• No power supply start up in loaded condition (eg. with lamp).
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Colour flickers. No colour. after a while. (with circuit diagram extract)
• Drive for high voltage missing. (extract of circuit diagram attached)
• No picture. TXT OK . (part of circuit diagram displayed)
• Intermittently dead. (extract of circuit diagram attached)
• How to switch off Hotel-Mode.
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (with circuit diagram extract) (20GR1050 PHILIPS repair tip)
• No picture. OSD OK .
• Trips. at start-up (intermittently). (with circuit diagram extract) (20GR1050 PHILIPS repair tip)
• The removal of leaded diodes. (part of circuit diagram displayed)
• Unstable tuning.
• Initial volume level is higher than maximum Hotel mode setting.
• Searches for channels continuously. (picture attached)
• Green picture.
• No line start up; +95 available; +9V is about 4.5V. (+ extract of circuit diagram)
• Bright picture. Flyback lines. (service info for PHILIPS -20GR1050)
• How to de-activate Hotel-Mode:
• PSU switches off with load at U95V. (extract of circuit diagram attached)
• Dark picture. Audio OK .
• No line output.
• Fizzling sound from speakers at start-up and intermittently picture jagged.
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (extract of circuit diagram attached)
• How to switch off Hotel-Mode:
• No channel search. No OSD. (extract of circuit diagram attached)
• Modification introduced to +9V supply.
• No audio.
• Lines on picture after approx one hour. It consists of a band of bright white lines about two inches wide. (part of circuit diagram displayed)
• Vertical size varies. intermittently.
• The remote control only controls the volume and sound-stop. No function with On-Off and channel change-over, although the display for the operation flickers.
• No switch on. Low noise on sound. (extract of circuit diagram attached)
• Settings do not stay in position.
• Standby LED lights up and switches off at power on. Appliance will not start up.
• U743 tuner replacement. (+ extract of circuit diagram)
• CRT types.
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• No HT from chopper circuit. (part of circuit diagram displayed)
• Line output stage TS7528 is defective. (part of circuit diagram displayed)
• During picture changes sometimes a volume increase (plop) is heard. (+ extract of circuit diagram)
• 6613 type change. (with circuit diagram extract)
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• V-centre adjustment procedure.
• Intermittent green picture, channels cannot be programmed. (part of circuit diagram displayed) (20GR1050 PHILIPS repair tip)
• Lines across top of picture about 8" in first 100 lines. (picture attached)
• Vertical vibration in cold condition of set.
• Trips. (picture attached)
• Tuning drifts. only on certain channels.
• No audio.
• Colours flickers and disappears.
• Whistle. (service info for PHILIPS -20GR1050)
• Adjustment of +95V. (extract of circuit diagram attached)
• Noise in audio.
• No tuning, no remote volume control. (picture attached) (20GR1050 PHILIPS repair tip)
• How to enter/exit HOTEL mode.
• No power with abnormal sound. (extract of circuit diagram attached)
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (with circuit diagram extract)
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD. (20GR1050 tips)
• Sound varies with picture content.
• Set does not retune or program etc
• No connection for headphone.
• No picture. No sound. Switching on and off from Standby OK.
• Dead. Strange noises from PSU/ line output transformer. (picture attached)
• Service manual correction. (part of circuit diagram displayed)
• Sound varies with picture content.
• No functions, hum in loudspeakers. (picture attached)
• Turns on automatically. No RC or front panel controls.
• Connection of a loop system to the TV.
• Height excessive. Defective linearity. Field blanking. (picture attached) (PHILIPS - 20GR1050 information)
• No colour.
• No function. Standby LED flashes briefly. (picture attached)
• Secondary main power supply OK except +9V at 5.8V
• Hums softly. (part of circuit diagram displayed)
• Quick hiccup. (part of circuit diagram displayed)
• Search jumps on UHF.
• Unstable tuning.
• Intermittent colour.
• The picture is slightly yellow, flyback lines. Slightly noisy, no own recording possible.
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (extract of circuit diagram attached) (20GR1050 PHILIPS repair tip)
• Picture is poor with rippling on verticals. (picture attached)
• Buzzing sound then switches off.
• No audio.
• Intermittent colour.
• Does not shut down (when cold).
• Identification coil adjustment.
• Line down middle of screen. (part of circuit diagram displayed) (20GR1050 tip from PHILIPS)
• Replacing the EAROM. (+ extract of circuit diagram) (20GR1050 tips)
• Dead. Only hum from speakers. (+ extract of circuit diagram)
• No functions. after start-up (intermittently).
• Sound motorboating when cold. (picture attached) (PHILIPS - 20GR1050 information)
• Bright flash on screen. No picture or sound. (with circuit diagram extract)
• Buzzing.
• Initial volume level is higher than maximum hotel mode setting.
• Hotel mode.
• No tuning.
• Buzz in audio. No picture.
• Change of C2523.
• Noise in sound. Mute does not function. (20GR1050 tip from PHILIPS)
• Distorted audio.
• Low audio.
• Blank raster. Flyback lines. (picture attached)
• PAL colour amplitude adjustment procedure.
• Two lines going around. (extract of circuit diagram attached)
• Tuning drifts. only on certain channels (after a while). (20GR1050 tip from PHILIPS)
• Line tearing. on lower half screen. (with circuit diagram extract) (20GR1050 tip from PHILIPS)
• Green picture. (part of circuit diagram displayed)
• No start-up. (extract of circuit diagram attached)
• Sound returns gradually after channel change. (extract of circuit diagram attached)
• No colour. (PHILIPS - 20GR1050 information)
• How to switch OFF Hotel-Mode.
• Hazy flickering picture at top. (+ extract of circuit diagram)
• Intermittently dead. after start-up.
• No start-up. intermittently.
• Intermittently no picture and sound at switch on. Buzz from speaker. (with circuit diagram extract) (PHILIPS - 20GR1050 information)
• Picture is faint with hanover bars. (with circuit diagram extract) (service info for PHILIPS -20GR1050)
• Random breakdown of line output transistor. (extract of circuit diagram attached)
• The fuse and the bridge diodes in the power supply blow.
• Replacement of surface mounted diode 6637. (with circuit diagram extract)
• No audio. (20GR1050 tip from PHILIPS)
• No output from the chopper power supply which uses a junction FET, whose gate and source are at 12V while 300V is present at the drain. (extract of circuit diagram attached)
• Initial volume level is higher than maximum Hotel mode setting.
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• No function at switch on from standby. Switches to LOCK (hotel) mode. (extract of circuit diagram attached)
• Limited volume. No channel search.
• Description of SMPS. (part of circuit diagram displayed)
• Picture is mostly green with flyback lines after 10 secs from switch on. (PHILIPS - 20GR1050 information)
• Standby just pulsing.
• Picture only in two bars in upper screen section, the rest is dark. (with circuit diagram extract)
• Set comes on in store lock mode. (picture attached)
• Vertical oscillator adjustment procedure.
• No picture, only squeaks for a short time at switch on then no more functions.
• Appliance is dead with standby LED flashing after a few seconds. (+ extract of circuit diagram)
• Error messages indicated by front display flashing. (with circuit diagram extract)
• Does not stop on stations.
• Slow start-up.
• No start-up. intermittently (when cold). (+ extract of circuit diagram)
• Smeary, washed out picture with bent verticals. (+ extract of circuit diagram)
• Dead. (picture attached)
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off.
• Dim picture with Hanover bars visible. (with circuit diagram extract)
• Display goes to F1 a few seconds after switching the set on.
• Production change to line drive. (+ extract of circuit diagram)
• Tuning drift, when it is hot the tuning is lost on channel change.
• Stops at start up. (with circuit diagram extract)
• Doesn't store stations correctly.
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• PSU does not start up, if appliance was switched off for a day. Appliance functions after short switch on/off. (part of circuit diagram displayed)
• Skips channels during tuning. (with circuit diagram extract)
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• No functions. Standby LED flashes. Relay switches to ON.
• No freeze frame or intermittent freeze frame; no sound. (extract of circuit diagram attached)
• Modification at line transformer position 5530. (+ extract of circuit diagram) (PHILIPS - 20GR1050 information)
• No voltage from PSU, computer does not work. (extract of circuit diagram attached)
• No picture. No audio. (part of circuit diagram displayed)
• Picture centering has shifted horizontally. No OSD.
• Line output stage does not function.
• Poor sync. AGC fault.
• Loud chriping after switch on. It becomes lower after a short time.
• No tuning or on screen tuning display.
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (picture attached)
• Protection device (thyristor THY6641) is triggered at switch on. (with circuit diagram extract) (20GR1050 tips)
• Blown chopper. (part of circuit diagram displayed)
• Enter service mode.
• Squealing from PSU.
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• Intermittent colour.
• Right side of picture discoloured.
• Bell filter adjustment procedure.
• PSU check.
• Skips channels during tuning. only on certain channels.
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• Reluctant to start from cold (+ extract of circuit diagram)
• Green picture with retrace lines. After a few restarts picture OK.
• Reduced horizontal size. (with circuit diagram extract) (service info for PHILIPS -20GR1050)
• Crackling and popping in sound after a short time.
• LED flashes once, then gurgles. (part of circuit diagram displayed)
• Dead with whistling noise coming from power supply. (with circuit diagram extract)
• Sometimes when turned on, green screen only with flyback lines, at other times no tuning and channel will not change. (extract of circuit diagram attached)
• No line output stage. (part of circuit diagram displayed)
• No standby, humming and standby LED blinks.
• No functions. when cold.
• No SOP supply. (+ extract of circuit diagram)
• Intermittent audio and picture. (extract of circuit diagram attached)
• Memory content dropout at positions 4 and 5.
• No picture and sound. Low hum intermittently, no function.
• Poor synchronisation. (picture attached)
• Line tearing, especially with bright scences. (part of circuit diagram displayed) (service info for PHILIPS -20GR1050)
• Using a lamp as a load.
• Blank raster. No audio. after a while. (+ extract of circuit diagram)
• Stored channels are partially lost.
• Excessive green.
• The tone (sound) tunes well, but the volume cannot be raised.
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (with circuit diagram extract)
• No picture, sound ok but on turning up A1 control, frame collapse. (extract of circuit diagram attached) (service info for PHILIPS -20GR1050)
• No transmitters to adjust and the sound is not controllable.
• No tuning. only on certain channels.
• Cannot change tuning or stored settings. (+ extract of circuit diagram)
• Tuning drifts. (extract of circuit diagram attached)
• Volume goes to max. No volume control.
• No horizontal synchronisation. (+ extract of circuit diagram)
• No colour in OSD.
• No audio.
• Low frequency noise on sound.
• No tuning possible, F2 appears on bottom of picture and S1 on top. (20GR1050 tip from PHILIPS)
• Switches off by itself. after a while. (extract of circuit diagram attached)
• Processor numbers (changed).
• Loosing colour during play-back of a video tape. (extract of circuit diagram attached)
• Stuck in standby. (extract of circuit diagram attached)