20GR105550R / PHILIPS [TV]

• Colour disappears with VCR-scan (picture search). (part of circuit diagram displayed)
• Occasionally appliance does not switch on from standby. No further functions are possible.
• Line out of phase. Black band in centre of screen. No colour.
• Dead. Low hum.
• Sound goes to max. intermittently and HT varies. (extract of circuit diagram attached)
• Picture fails for a short time. (+ extract of circuit diagram) (20GR105550R PHILIPS repair tip)
• 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.
• No switch on after activating mains switch. Whistling noise. (with circuit diagram extract) (20GR105550R tip from PHILIPS)
• Line output transistor TR7528 fails at switch on. (20GR105550R tip from PHILIPS)
• Green raster. Faint picture. Flyback lines.
• Stations won't change. Picture and sound OK. Other functions OK.
• 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 sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (with circuit diagram extract)
• No voltage from PSU, computer does not work. (picture attached)
• Interference in audio. Interference in picture. (with circuit diagram extract)
• Excessive green.
• Dark picture. Audio OK .
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (picture attached)
• How to de-activate Hotel-Mode:
• Fizzling sound from speakers at start-up and intermittently picture jagged.
• Picture separating line appears. Whistling.
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• Intermittent colour.
• Intermittent colour and intermittent dark vertical bar on picture.
• Line output stage TS7528 is defective. (extract of circuit diagram attached) (service info for PHILIPS -20GR105550R)
• No HT from chopper circuit. (picture attached)
• Skips channels during tuning. only on certain channels. (PHILIPS - 20GR105550R information)
• No standby, humming and standby LED blinks.
• Rolling or jittering picture. (extract of circuit diagram attached)
• Menu rolling. (with circuit diagram extract)
• Defective IC7103 SV-production. (part of circuit diagram displayed) (service info for PHILIPS -20GR105550R)
• Dead with whistling noise coming from power supply. (+ extract of circuit diagram) (PHILIPS - 20GR105550R information)
• Slow hiccup (+ extract of circuit diagram)
• No tuning. (extract of circuit diagram attached)
• The switched-mode power supply cannot be loaded.
• Appliance can not be programmed. Search does not function. Only limited volume control.
• Colour flickers. No colour. after a while. (extract of circuit diagram attached) (20GR105550R PHILIPS repair tip)
• Change of C2523. (20GR105550R tips)
• Stuck in hotel mode.
• 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. (part of circuit diagram displayed)
• Enable Hotel mode. Disable hotel mode.
• No sound or raster. The 95V HT supply is present at the line output stage but there is no line drive. (+ extract of circuit diagram)
• The TV does not stop during the tuning phase.
• Picture displays lines and strange foldover effect at centre.
• Distorted audio.
• Reluctant to start from cold (extract of circuit diagram attached) (PHILIPS - 20GR105550R information)
• Sound varies with picture content.
• Red picture. Flyback lines.
• Picture only in two bars in upper screen section, the rest is dark. (+ extract of circuit diagram)
• Comes on for a short time.
• Trips. (with circuit diagram extract)
• +9V supply modification. (picture attached)
• SOPS defective. (+ extract of circuit diagram)
• Cannot change tuning or stored settings. (picture attached)
• Replacement of TDA7052 with a TDA7052A.
• No tuning possible, F2 appears on bottom of picture and S1 on top.
• Volume can't be tuned down. No tuning with RC. (with circuit diagram extract)
• Low audio.
• How to de-activate Hotel-Mode.
• No start-up. Standby LED flashes .
• Dead. Only hum from speakers. (with circuit diagram extract)
• No tuning or on screen tuning display.
• Picture shifted horizontally. (extract of circuit diagram attached)
• Vertical vibration in cold condition of set.
• Picture is mostly green with flyback lines after 10 secs from switch on.
• No audio.
• Intermittently narrow picture, but corrects itself shortly after. (PHILIPS - 20GR105550R information)
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (with circuit diagram extract)
• No colour.
• No power supply start up in loaded condition (eg. with lamp).
• Streaks in picture. Picture pulls and rolls intermittently.
• Buzz in audio (intermittently). (extract of circuit diagram attached)
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (picture attached)
• No vertical deflection. (picture attached) (20GR105550R PHILIPS repair tip)
• Appliance will not switch on at times, but hums in the power supply section.
• No colour. (+ extract of circuit diagram)
• Intermittent colour.
• Dead set. Tries to start.
• Searches for channels continuously. (part of circuit diagram displayed)
• Green screen and at other times no tuning. (+ extract of circuit diagram)
• Tripping. (+ extract of circuit diagram)
• No picture and sound. Low hum intermittently, no function.
• Picture is faint with hanover bars. (+ extract of circuit diagram)
• Standby LED lights up and switches off at power on. Appliance will not start up. (20GR105550R tips)
• Bell filter adjustment procedure.
• After working normally for a while the TV blocks in any position. The functions do not work.
• No functions, hum in loudspeakers. (part of circuit diagram displayed)
• Low frequency noise on sound.
• Picture centering has shifted horizontally. No OSD.
• Appliance is dead with standby LED flashing after a few seconds. (+ extract of circuit diagram) (20GR105550R tips)
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• Blank raster. OSD OK .
• No tuning bar when install button pressed and set not in hotel mode. (extract of circuit diagram attached)
• No HV. (20GR105550R tip from PHILIPS)
• No voltage from PSU. (picture attached)
• Secondary main power supply OK except +9V at 5.8V
• Tuning drifts. (+ extract of circuit diagram)
• Line output transistor replacement. (20GR105550R tips)
• Correction to service manual LOT winding.
• Colour sync adjustment procedure.
• Does not shut down (when cold).
• Vertical size varies. intermittently.
• Automatic fine tuning (AFT) field alignment procedure.
• Replacement of surface mounted diode 6637. (with circuit diagram extract)
• Sound varies with picture content.
• Strongly distorted sound by low volume.
• Reluctant to start up from cold.
• Connection of a loop system to the TV. (PHILIPS - 20GR105550R information)
• Excessive brightness.
• No colour in OSD.
• Picture appears slowly.
• No picture, sound ok but on turning up A1 control, frame collapse. (+ extract of circuit diagram)
• Enter service mode.
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• No line output.
• Excessive vertical size.
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• Tuning drifts. only on certain channels.
• New IR receiver.
• No start up, just a buzzing noise in speakers. (part of circuit diagram displayed)
• Field collapse normally with blank picture. (+ extract of circuit diagram)
• Dead. Low level buzz from loudspeaker. (+ extract of circuit diagram)
• Difficultly in tuning to correct position. (20GR105550R tip from PHILIPS)
• Hotel mode.
• Hazy flickering picture at top. (+ extract of circuit diagram)
• Loosing colour during play-back of a video tape. (with circuit diagram extract)
• Dead. (+ extract of circuit diagram)
• Dead due to action of over voltage protection circuit.
• 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. (with circuit diagram extract)
• Blank raster. Flyback lines. (extract of circuit diagram attached)
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• Control micro processors.
• No picture. No sound. Switching on and off from Standby OK.
• Two lines going around. (picture attached)
• To release hotel mode (child lock).
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (extract of circuit diagram attached)
• Green screen with flyback line. No picture. OSD OK.
• No frame or short frame. (part of circuit diagram displayed)
• Slow start up of power supply. (extract of circuit diagram attached) (service info for PHILIPS -20GR105550R)
• Description of SMPS. (part of circuit diagram displayed)
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• No audio.
• Volume varies. depending on picture content. (part of circuit diagram displayed)
• Memory content dropout at positions 4 and 5.
• Programs and PP-settings cannot be changed.
• Tuning drifts. only on certain channels (after a while).
• No colour.
• No picture (when cold). (20GR105550R PHILIPS repair tip)
• Wavy picture. on the right. (20GR105550R tip from PHILIPS)
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• How to switch OFF Hotel-Mode.
• No tuning.
• Sound increases intermittently or "pops", especially during bright scenes. (+ extract of circuit diagram)
• No OSD. Picture OK .
• Search jumps on UHF.
• To put into hotel mode.
• No functions. Slow start-up. (with circuit diagram extract)
• Crackling and popping in sound after a short time.
• No start-up. Buzzing from speakers and working noise of PSU. (20GR105550R PHILIPS repair tip)
• No function at switch on from standby. Switches to LOCK (hotel) mode. (part of circuit diagram displayed) (20GR105550R tip from PHILIPS)
• Quick hiccup. (extract of circuit diagram attached)
• Buzzing sound then switches off.
• No switch on. Weak whistling noise from PSU. LED is OFF.
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
• Programming unoperational. Limited sound adjustment possible.
• Picture shifted to the left. intermittently. Line tearing. intermittently. (part of circuit diagram displayed) (20GR105550R PHILIPS repair tip)
• Modification at line transformer position 5530. (with circuit diagram extract)
• Picture passes out in the centre.
• Intermittent green picture, channels cannot be programmed. (+ extract of circuit diagram)
• Production change to line drive. (with circuit diagram extract) (PHILIPS - 20GR105550R information)
• Sound varies with picture content.
• No function, starts up from standby, then goes out.
• Lines on picture after approx one hour. It consists of a band of bright white lines about two inches wide. (+ extract of circuit diagram)
• Trips. at start-up (intermittently). (picture attached)
• Set comes on in store lock mode. (picture attached)
• Error messages indicated by front display flashing. (+ extract of circuit diagram)
• Modification introduced to +9V supply.
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• Identification coil adjustment.
• New infra red receiver.
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (picture attached)
• Programme channel search cannot be called up.
• Smeary, washed out picture with bent verticals. (extract of circuit diagram attached)
• No tuning - no channels.
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off.
• After replacement of the line output transistor BUT12, picture with trapezoid effect, BUT12 overheats and goes defective again. (with circuit diagram extract)
• Service manual correction. (extract of circuit diagram attached)
• No audio. (service info for PHILIPS -20GR105550R)
• Dark picture.
• "Store" key does not work. (with circuit diagram extract)
• How to de-activate Hotel mode.
• Tuning menu can not be called. All other functions OK.
• Line tearing. on lower half screen. (with circuit diagram extract)
• Standby just pulsing.
• No picture. No audio. (with circuit diagram extract)
• Power supply fault finding. (part of circuit diagram displayed)
• Intermittent audio and picture. (part of circuit diagram displayed)
• Whistling.
• Green picture with retrace lines. After a few restarts picture OK.
• No functions. after start-up (intermittently).
• Does not switch on, standby LED OK.
• Bright flash on screen. No picture or sound. (with circuit diagram extract)
• High voltage transistor defective after a while.
• The fuse and the bridge diodes in the power supply blow.
• Change of C2523.
• Green picture. (+ extract of circuit diagram)
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (+ extract of circuit diagram)
• No audio.
• No +9V, line output stage is OK. (+ extract of circuit diagram)
• LED does not flash. Slight buzz in appliance. (extract of circuit diagram attached)
• No functions. when cold.
• No or intermittent start-up. (part of circuit diagram displayed)
• Skips channels during tuning. (picture attached)
• Switches to standby. (part of circuit diagram displayed) (20GR105550R tip from PHILIPS)
• To improve performance with prerecorded cassettes. (picture attached)
• No colour.
• No line output stage. (with circuit diagram extract)
• Using a lamp as a load.
• 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.
• Initial volume level is higher than maximum Hotel mode setting. (20GR105550R tip from PHILIPS)
• Adjustment of +95V. (part of circuit diagram displayed)
• No channel search. No OSD. (picture attached)
• Failures in the power supply. (picture attached)
• No start-up. when cold. (with circuit diagram extract)
• Line output transistor running hot. (part of circuit diagram displayed)
• LED flashes once, then gurgles. (part of circuit diagram displayed)
• No switch on. Low noise on sound. (part of circuit diagram displayed)
• Initial volume level is higher than maximum Hotel mode setting.
• No transmitters to adjust and the sound is not controllable.
• Vertical oscillator adjustment procedure.
• Sound returns gradually after channel change. (+ extract of circuit diagram)
• Does not regulate +95V. (20GR105550R tip from PHILIPS)
• The TV cannot hold the picture.
• Buzzing.
• Dead. At switch on the stand by LED flashes.
• Line tearing and rope effect.
• Control panel cover.
• Poor synchronisation. when cold. (part of circuit diagram displayed) (20GR105550R PHILIPS repair tip)
• How to switch off Hotel-Mode: (PHILIPS - 20GR105550R information)
• Print with linearity coil pos. 5800.
• Switches off by itself. after a while. (+ extract of circuit diagram)
• Dead. Low frequency noise on sound.
• Dead, very slight whistle from PSU.
• Change of C2523.
• Set goes accidentally into hotel mode.
• Bright flash on screen and no picture or sound after a few minutes. (extract of circuit diagram attached)
• Buzzing from PSU. when cold. (part of circuit diagram displayed)
• Initial volume level is higher than maximum hotel mode setting.
• Sound varies with picture content.
• How to de-activate volume limiter.
• No function. Standby LED flashes briefly. (picture attached)
• No start-up. intermittently.
• No line start up; +95 available; +9V is about 4.5V. (part of circuit diagram displayed)
• Enable Hotel mode.
• 6613 type change. (extract of circuit diagram attached)
• Power supply does not oscillate. (part of circuit diagram displayed)
• Does not start up at once from cold.
• No sound or picture. Low hum from speaker. (part of circuit diagram displayed)
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• Programme tuning difficulty. Stations has shifted on tuning bar. (service info for PHILIPS -20GR105550R)
• No operation.
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (extract of circuit diagram attached)
• No audio. (20GR105550R PHILIPS repair tip)
• Picture shifts. (with circuit diagram extract)
• Intermittently dead. (picture attached)
• Noise in sound. Mute does not function.
• Sound motorboating when cold. (picture attached)
• CRT types. (20GR105550R tips)
• Excessive horizontal size.
• No audio.
• No horizontal synchronisation. (picture attached)
• Poor reproduction of copy protected tapes. (with circuit diagram extract)
• Volume goes to max. No volume control.
• Intermittently no picture and sound at switch on. Buzz from speaker. (extract of circuit diagram attached) (service info for PHILIPS -20GR105550R)
• Whistling from PSU. (picture attached)
• PSU switches off with load at U95V. (extract of circuit diagram attached)
• Doesn't store stations correctly.
• Horizontal hold adjustment procedure.
• During picture changes sometimes a volume increase (plop) is heard. (picture attached)
• V-centre adjustment procedure.
• The tone (sound) tunes well, but the volume cannot be raised.
• Horizontal oscillator adjustment procedure.
• Dead. Strange noises from PSU/ line output transformer. (picture attached)
• No start-up. (with circuit diagram extract)
• Search jumps on UHF.
• Picture is poor with rippling on verticals. (with circuit diagram extract)
• Vertical collapse. (with circuit diagram extract)
• SIF DET adjustment procedure.
• Stuck in standby. (extract of circuit diagram attached)
• No SOP supply. (extract of circuit diagram attached)
• Intermittent destruction of line o/p transistor. (+ extract of circuit diagram)
• 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 regulation. (with circuit diagram extract)
• No tuning, no remote volume control. (extract of circuit diagram attached)
• Local controls inoperative.
• Memory loss. (+ extract of circuit diagram)
• Chopper inoperative. (picture attached)
• Height excessive. Defective linearity. Field blanking. (extract of circuit diagram attached)
• Volume change with great fluctuations in brightness. (with circuit diagram extract)
• Intermittent colour.
• Right hand side of screen has a line.
• Unregulated power supply. Pulsating picture and surging sound. (picture attached)
• Colour amplitude and phase adjustment procedure.
• Delay RF AGC adjustment procedure.
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• Excessive HV. after a while.
• Processor numbers (changed).
• Difficult to tune programmes, stations shifted on tuning bar.
• No tuning. No channel lock. (part of circuit diagram displayed)
• Green picture. (20GR105550R tips)
• Horizontal white line.
• LED switches on then off immediately.
• Store lock on the appliance.
• Microprocessor screening plate. (with circuit diagram extract)
• Colours flickers and disappears.
• Reduced horizontal size. (+ extract of circuit diagram)
• Unstable tuning. (20GR105550R tip from PHILIPS)
• Lines across top of picture about 8" in first 100 lines. (part of circuit diagram displayed) (20GR105550R tips)
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• Low 5V to micro chip. (part of circuit diagram displayed)
• U743 tuner replacement. (with circuit diagram extract)
• Bright picture. Flyback lines.
• Change of C2523.
• Slow start-up.
• No connection for headphone.
• Protection device (thyristor THY6641) is triggered at switch on. (+ extract of circuit diagram)
• Unstable tuning.
• Noise in audio.
• Line down middle of screen. (extract of circuit diagram attached)
• White balance adjustment.
• Line transistor 7528 blows within 1 sec. (with circuit diagram extract)
• 10V on 95V line. (+ extract of circuit diagram) (PHILIPS - 20GR105550R information)
• Loud chriping after switch on. It becomes lower after a short time.
• Blown chopper. (picture attached)
• Right side of picture discoloured.
• Set does not retune or program etc (20GR105550R tips)
• 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)
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
• Intermittently dead. after start-up.
• Search jumps on UHF.
• No start up from cold and humming.
• No picture. (+ extract of circuit diagram)
• No colour and vertical black bar across screen.
• Tuning drift, when it is hot the tuning is lost on channel change.
• Programme tuning difficulty, stations shifted on tuning bar. (picture attached)
• Stored channels are partially lost.
• Vertical line. on the right half screen. (with circuit diagram extract)
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (with circuit diagram extract)
• Does not stop on stations.
• No picture. Audio OK .
• Blue picture. Coloured lines.
• Drive for high voltage missing. (part of circuit diagram displayed)
• Line output stage does not start up. (part of circuit diagram displayed)
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• Defective purity.
• Line output stage only starts up for a short time. (picture attached)
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• Replacing the EAROM. (extract of circuit diagram attached)
• Hotel Mode activates by itself. (extract of circuit diagram attached)
• How to enter/exit HOTEL mode.
• Cannot be programmed and search does not function. Only limited volume adjustable.
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (with circuit diagram extract)
• Limited volume. No channel search.
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (+ extract of circuit diagram)
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (extract of circuit diagram attached) (20GR105550R tip from PHILIPS)
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Line output transistor becomes warm and in the course of time it becomes defective. (part of circuit diagram displayed) (20GR105550R tip from PHILIPS)
• No picture. TXT OK . (extract of circuit diagram attached) (PHILIPS - 20GR105550R information)
• Change of C2523.
• Blank raster. No audio. after a while. (+ extract of circuit diagram)
• Dim picture with Hanover bars.
• Display goes to F1 a few seconds after switching the set on.
• The removal of leaded diodes. (picture attached)
• Blank or green raster. Flyback lines. Faint picture or normal picture. (with circuit diagram extract)
• Whistle.
• The following production changes were introduced to prevent the set coming on in the store lock mode when switched on from standby. (with circuit diagram extract)
• PSU check.
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault.
• Microcomputers and screening plate.
• Hums softly. (picture attached)
• No start up. No standby. Attempts to start up, but fails.
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• PSU does not start up, if appliance was switched off for a day. Appliance functions after short switch on/off. (+ extract of circuit diagram)
• Poor synchronisation. (part of circuit diagram displayed) (service info for PHILIPS -20GR105550R)
• Picture shifted to the right. (picture attached) (service info for PHILIPS -20GR105550R)
• Focus adjustment.
• R-Y and B-Y discriminator adjustment procedure. (with circuit diagram extract)
• Difficult startup. Rattling sound from line output trafo.
• No start-up. intermittently (when cold). (+ extract of circuit diagram)
• No picture. No sound. Purring sound in loudspeaker. (extract of circuit diagram attached)
• Dim picture with Hanover bars visible. (part of circuit diagram displayed)
• How to reset microprocessor.
• No power with abnormal sound. (+ extract of circuit diagram)
• Colours flickers and disappears.
• Low audio. (with circuit diagram extract) (20GR105550R tip from PHILIPS)
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (extract of circuit diagram attached)
• Humming, motor noise and other unusual noises. Normal picture.
• Appliance does not function with standby light flashing. (20GR105550R tip from PHILIPS)
• No tuning. only on certain channels.
• How to switch off Hotel-Mode.
• Random breakdown of line output transistor. (extract of circuit diagram attached)
• Unstable tuning. (20GR105550R tip from PHILIPS)
• Settings do not stay in position.
• No sound. No picture. Faint motorboating noise.
• Green picture.
• Stops at start up. (extract of circuit diagram attached)
• Unstable tuning. (service info for PHILIPS -20GR105550R)
• Squealing from PSU.
• PSU peeps +95 is ca 0,8v (20GR105550R tips)
• Reduced vertical size. at top.
• Tuning procedure.
• Turns on automatically. No RC or front panel controls.
• +B very high. (picture attached)
• Buzz in audio. No picture.
• Error codes.
• No audio.
• PAL colour amplitude adjustment procedure.
• Vertical roll. (picture attached)
• Colours flicker and disappears.
• No freeze frame or intermittent freeze frame; no sound. (extract of circuit diagram attached) (service info for PHILIPS -20GR105550R)
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• No functions. Hum in loudspeaker. No LED lit.
• Becomes defective immediately after switch on.
• Poor sync. AGC fault.
• Initial volume level is higher than maximum Hotel mode setting. (PHILIPS - 20GR105550R information)
• No functions. Sound buzzes in loudspeaker. (part of circuit diagram displayed)
• Only half a picture. (+ extract of circuit diagram)
• Line tearing, especially with bright scences. (with circuit diagram extract)
• To remove store/lock.
• No function. When switching on with RC, standby LED lights up. (part of circuit diagram displayed) (PHILIPS - 20GR105550R information)
• Initial volume level is higher than maximum Hotel mode setting.
• White unmodulated raster. Picture missing. (extract of circuit diagram attached)
• Line output stage does not function.
• Unable to tune or set volume in Prefix mode.
• No picture. OSD OK .
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• Does not start. Slight buzzing in loudspeaker.
• No functions. Standby LED flashes. Relay switches to ON.
• Line output transistor fails repeatedly. (part of circuit diagram displayed)