20GR105059H / PHILIPS [TV]

• No tuning. only on certain channels. (20GR105059H tip from PHILIPS)
• Bell filter adjustment procedure.
• No vertical deflection. (extract of circuit diagram attached)
• Intermittent destruction of line o/p transistor. (picture attached) (PHILIPS - 20GR105059H information)
• Appliance is dead with standby LED flashing after a few seconds. (extract of circuit diagram attached)
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
• No functions. Slow start-up. (with circuit diagram extract)
• Skips channels during tuning. only on certain channels.
• Programme tuning difficulty. Stations has shifted on tuning bar.
• Cannot be programmed and search does not function. Only limited volume adjustable.
• Dead. Strange noises from PSU/ line output transformer. (with circuit diagram extract)
• Vertical oscillator adjustment procedure. (20GR105059H tip from PHILIPS)
• Memory loss. (picture attached)
• No start-up. when cold. (picture attached)
• Settings do not stay in position.
• Poor sync. AGC fault.
• Reduced vertical size. at top.
• Vertical size varies. intermittently.
• No switch on. Weak whistling noise from PSU. LED is OFF.
• 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)
• Sound motorboating when cold. (+ extract of circuit diagram)
• Colours flicker and disappears.
• Horizontal white line.
• No tuning.
• No tuning - no channels.
• Colours flickers and disappears.
• Programming unoperational. Limited sound adjustment possible.
• Tuning drifts. only on certain channels (after a while).
• Control micro processors.
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• No tuning possible, F2 appears on bottom of picture and S1 on top.
• How to switch off Hotel-Mode.
• Low audio. (+ extract of circuit diagram)
• Search jumps on UHF. (PHILIPS - 20GR105059H information)
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (+ extract of circuit diagram)
• Squealing from PSU.
• Change of C2523.
• No start-up. Buzzing from speakers and working noise of PSU.
• Line transistor 7528 blows within 1 sec. (extract of circuit diagram attached)
• The fuse and the bridge diodes in the power supply blow.
• Doesn't store stations correctly.
• Change of C2523.
• How to switch off Hotel-Mode:
• Sometimes when turned on, green screen only with flyback lines, at other times no tuning and channel will not change. (+ extract of circuit diagram)
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• Trips. (part of circuit diagram displayed)
• How to de-activate volume limiter.
• The switched-mode power supply cannot be loaded.
• Green screen and at other times no tuning. (with circuit diagram extract)
• Blank raster. Flyback lines. (part of circuit diagram displayed)
• The removal of leaded diodes. (with circuit diagram extract)
• Power supply fault finding. (part of circuit diagram displayed) (20GR105059H tips)
• Right side of picture discoloured.
• PSU switches off with load at U95V. (with circuit diagram extract)
• No audio.
• CRT types.
• No switch on after activating mains switch. Whistling noise. (picture attached)
• Production change to line drive. (with circuit diagram extract)
• Sound increases intermittently or "pops", especially during bright scenes. (with circuit diagram extract) (PHILIPS - 20GR105059H information)
• Humming, motor noise and other unusual noises. Normal picture.
• No line start up; +95 available; +9V is about 4.5V. (+ extract of circuit diagram)
• Change of C2523.
• Searches for channels continuously. (extract of circuit diagram attached)
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (extract of circuit diagram attached)
• No operation.
• PSU does not start up, if appliance was switched off for a day. Appliance functions after short switch on/off. (extract of circuit diagram attached)
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Line output stage does not start up. (+ extract of circuit diagram)
• Tuning drifts. only on certain channels.
• Lines across top of picture about 8" in first 100 lines. (with circuit diagram extract)
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• How to switch OFF Hotel-Mode.
• The TV does not stop during the tuning phase.
• How to reset microprocessor. (20GR105059H tip from PHILIPS)
• The tone (sound) tunes well, but the volume cannot be raised.
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (picture attached)
• Hazy flickering picture at top. (+ extract of circuit diagram)
• LED flashes once, then gurgles. (with circuit diagram extract)
• Volume goes to max. No volume control.
• No standby, humming and standby LED blinks.
• To remove store/lock.
• Difficult startup. Rattling sound from line output trafo.
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• Unstable tuning.
• Picture fails for a short time. (part of circuit diagram displayed)
• No colour. (extract of circuit diagram attached)
• Occasionally appliance does not switch on from standby. No further functions are possible. (20GR105059H PHILIPS repair tip)
• Comes on for a short time.
• LED switches on then off immediately. (20GR105059H PHILIPS repair tip)
• Picture shifts. (picture attached)
• Green picture.
• Stored channels are partially lost.
• SIF DET adjustment procedure.
• No functions. when cold.
• Noise in audio.
• To release hotel mode (child lock).
• No functions. Sound buzzes in loudspeaker. (extract of circuit diagram attached)
• No function. When switching on with RC, standby LED lights up. (+ extract of circuit diagram)
• No colour.
• No picture. No audio. (+ extract of circuit diagram)
• Dead. Low hum.
• Menu rolling. (extract of circuit diagram attached) (20GR105059H PHILIPS repair tip)
• High voltage transistor defective after a while. (20GR105059H tips)
• Chopper inoperative. (part of circuit diagram displayed)
• 6613 type change. (part of circuit diagram displayed)
• Dead, very slight whistle from PSU. (PHILIPS - 20GR105059H information)
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (picture attached)
• PAL colour amplitude adjustment procedure.
• Enable Hotel mode. Disable hotel mode.
• Blown chopper. (+ extract of circuit diagram)
• Picture is faint with hanover bars. (extract of circuit diagram attached)
• Blank raster. No audio. after a while. (with circuit diagram extract)
• Automatic fine tuning (AFT) field alignment procedure.
• Line output stage only starts up for a short time. (with circuit diagram extract)
• After replacement of the line output transistor BUT12, picture with trapezoid effect, BUT12 overheats and goes defective again. (extract of circuit diagram attached) (20GR105059H PHILIPS repair tip)
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (picture attached) (20GR105059H tip from PHILIPS)
• No OSD. Picture OK .
• Tuning drifts. (extract of circuit diagram attached)
• Set does not retune or program etc (PHILIPS - 20GR105059H information)
• Defective IC7103 SV-production. (picture attached)
• Connection of a loop system to the TV.
• Sound varies with picture content.
• Only half a picture. (picture attached)
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (picture attached)
• Delay RF AGC adjustment procedure.
• Buzz in audio. No picture.
• Colour sync adjustment procedure.
• Excessive green.
• No voltage from PSU, computer does not work. (picture attached)
• Buzzing from PSU. when cold. (picture attached) (20GR105059H tip from PHILIPS)
• Difficultly in tuning to correct position.
• Line tearing. on lower half screen. (+ extract of circuit diagram)
• Display goes to F1 a few seconds after switching the set on.
• No colour.
• Turns on automatically. No RC or front panel controls. (20GR105059H tips)
• Loosing colour during play-back of a video tape. (+ extract of circuit diagram)
• Rolling or jittering picture. (part of circuit diagram displayed)
• Does not start. Slight buzzing in loudspeaker.
• Colour disappears with VCR-scan (picture search). (with circuit diagram extract)
• Stuck in hotel mode.
• Standby LED lights up and switches off at power on. Appliance will not start up.
• Colours flickers and disappears.
• Unstable tuning.
• Initial volume level is higher than maximum Hotel mode setting.
• Appliance will not switch on at times, but hums in the power supply section.
• No function. Standby LED flashes briefly. (extract of circuit diagram attached)
• Intermittent green picture, channels cannot be programmed. (with circuit diagram extract)
• No audio.
• Distorted audio.
• Green picture with retrace lines. After a few restarts picture OK.
• How to de-activate Hotel-Mode:
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (picture attached)
• Bright picture. Flyback lines.
• Dead. Only hum from speakers. (+ extract of circuit diagram)
• Volume varies. depending on picture content. (part of circuit diagram displayed)
• No functions. after start-up (intermittently).
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• Modification at line transformer position 5530. (+ extract of circuit diagram)
• Unregulated power supply. Pulsating picture and surging sound. (with circuit diagram extract)
• Drive for high voltage missing. (picture attached)
• Dead. Low level buzz from loudspeaker. (extract of circuit diagram attached)
• Blue picture. Coloured lines.
• Lines on picture after approx one hour. It consists of a band of bright white lines about two inches wide. (extract of circuit diagram attached)
• After working normally for a while the TV blocks in any position. The functions do not work.
• Power supply does not oscillate. (picture attached)
• Line output transistor fails repeatedly. (+ extract of circuit diagram)
• Tripping. (picture attached)
• Green picture. (extract of circuit diagram attached) (PHILIPS - 20GR105059H information)
• Quick hiccup. (part of circuit diagram displayed)
• Buzzing sound then switches off.
• Local controls inoperative.
• No connection for headphone.
• No or intermittent start-up. (+ extract of circuit diagram)
• Set comes on in store lock mode. (extract of circuit diagram attached)
• Dead with whistling noise coming from power supply. (with circuit diagram extract) (20GR105059H PHILIPS repair tip)
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• Store lock on the appliance.
• Does not stop on stations.
• Fizzling sound from speakers at start-up and intermittently picture jagged. (20GR105059H tips)
• Line output transistor replacement.
• 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)
• No picture (when cold).
• No sound or picture. Low hum from speaker. (+ extract of circuit diagram)
• No switch on. Low noise on sound. (with circuit diagram extract)
• Hums softly. (extract of circuit diagram attached)
• Intermittent audio and picture. (part of circuit diagram displayed) (PHILIPS - 20GR105059H information)
• Line tearing and rope effect.
• Does not regulate +95V.
• Reduced horizontal size. (with circuit diagram extract)
• Skips channels during tuning. (+ extract of circuit diagram)
• +B very high. (with circuit diagram extract)
• Reluctant to start from cold (part of circuit diagram displayed)
• Search jumps on UHF.
• No start up from cold and humming.
• Switches off by itself. after a while. (part of circuit diagram displayed)
• Dead set. Tries to start.
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (picture attached)
• Wavy picture. on the right.
• Tuning menu can not be called. All other functions OK.
• PSU peeps +95 is ca 0,8v
• Picture appears slowly.
• Switches to standby. (picture attached) (20GR105059H tip from PHILIPS)
• Cannot change tuning or stored settings. (extract of circuit diagram attached)
• No regulation. (with circuit diagram extract)
• Correction to service manual LOT winding.
• Intermittent colour and intermittent dark vertical bar on picture. (20GR105059H tips)
• No tuning bar when install button pressed and set not in hotel mode. (with circuit diagram extract)
• Bright flash on screen and no picture or sound after a few minutes. (+ extract of circuit diagram)
• Noise in sound. Mute does not function.
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off.
• No functions, hum in loudspeakers. (with circuit diagram extract)
• Defective purity.
• No picture. OSD OK .
• Buzz in audio (intermittently). (picture attached)
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
• Horizontal oscillator adjustment procedure. (20GR105059H PHILIPS repair tip)
• No line output.
• No SOP supply. (part of circuit diagram displayed)
• No tuning. No channel lock. (+ extract of circuit diagram)
• No tuning, no remote volume control. (part of circuit diagram displayed)
• Picture is poor with rippling on verticals. (+ extract of circuit diagram)
• Random breakdown of line output transistor. (extract of circuit diagram attached)
• Tuning procedure.
• Sound varies with picture content.
• Unstable tuning.
• No voltage from PSU. (extract of circuit diagram attached)
• Initial volume level is higher than maximum Hotel mode setting.
• Low frequency noise on sound.
• No functions. Hum in loudspeaker. No LED lit.
• Two lines going around. (+ extract of circuit diagram)
• Replacement of surface mounted diode 6637. (picture attached)
• Reluctant to start up from cold.
• Line output transistor TR7528 fails at switch on.
• Picture shifted horizontally. (picture attached)
• Crackling and popping in sound after a short time.
• Smeary, washed out picture with bent verticals. (+ extract of circuit diagram)
• No picture and sound. Low hum intermittently, no function.
• Change of C2523.
• Excessive vertical size.
• No sound or raster. The 95V HT supply is present at the line output stage but there is no line drive. (with circuit diagram extract)
• Vertical roll. (picture attached)
• Microcomputers and screening plate. (20GR105059H tip from PHILIPS)
• Enter service mode.
• Initial volume level is higher than maximum hotel mode setting.
• Dim picture with Hanover bars visible. (extract of circuit diagram attached)
• Replacement of TDA7052 with a TDA7052A.
• Protection device (thyristor THY6641) is triggered at switch on. (extract of circuit diagram attached)
• Height excessive. Defective linearity. Field blanking. (+ extract of circuit diagram)
• Does not shut down (when cold).
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (with circuit diagram extract)
• No picture. TXT OK . (with circuit diagram extract)
• No sound. No picture. Faint motorboating noise.
• Replacing the EAROM. (with circuit diagram extract)
• Picture passes out in the centre.
• Dead due to action of over voltage protection circuit.
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• No start-up. (extract of circuit diagram attached)
• Dead. Low frequency noise on sound.
• Change of C2523. (20GR105059H tip from PHILIPS)
• No picture. No sound. Switching on and off from Standby OK.
• Difficult to tune programmes, stations shifted on tuning bar.
• No horizontal synchronisation. (+ extract of circuit diagram)
• Unstable tuning. (service info for PHILIPS -20GR105059H)
• R-Y and B-Y discriminator adjustment procedure. (part of circuit diagram displayed)
• 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.
• Stations won't change. Picture and sound OK. Other functions OK.
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (part of circuit diagram displayed)
• Sound goes to max. intermittently and HT varies. (part of circuit diagram displayed)
• SOPS defective. (with circuit diagram extract)
• Line output transistor running hot. (picture attached)
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (picture attached)
• Horizontal hold adjustment procedure.
• White balance adjustment.
• Memory content dropout at positions 4 and 5.
• How to de-activate Hotel-Mode. (PHILIPS - 20GR105059H information)
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• No colour in OSD.
• Volume can't be tuned down. No tuning with RC. (picture attached)
• Intermittently dead. (extract of circuit diagram attached)
• Picture centering has shifted horizontally. No OSD.
• PSU check.
• Whistling from PSU. (part of circuit diagram displayed)
• Print with linearity coil pos. 5800.
• Dark picture.
• Becomes defective immediately after switch on.
• No function at switch on from standby. Switches to LOCK (hotel) mode. (+ extract of circuit diagram)
• Poor synchronisation. when cold. (picture attached) (20GR105059H PHILIPS repair tip)
• No freeze frame or intermittent freeze frame; no sound. (extract of circuit diagram attached)
• How to enter/exit HOTEL mode.
• No frame or short frame. (+ extract of circuit diagram)
• Interference in audio. Interference in picture. (picture attached)
• No start-up. Standby LED flashes .
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• No function, starts up from standby, then goes out.
• Secondary main power supply OK except +9V at 5.8V
• Does not start up at once from cold. (20GR105059H PHILIPS repair tip)
• Hotel mode.
• Appliance does not function with standby light flashing.
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• Blank raster. OSD OK .
• Programme channel search cannot be called up.
• Excessive horizontal size.
• Vertical collapse. (with circuit diagram extract)
• Picture shifted to the right. (extract of circuit diagram attached)
• Streaks in picture. Picture pulls and rolls intermittently.
• Intermittently dead. after start-up.
• LED does not flash. Slight buzz in appliance. (picture attached)
• Description of SMPS. (extract of circuit diagram attached)
• U743 tuner replacement. (picture attached)
• Bright flash on screen. No picture or sound. (with circuit diagram extract)
• White unmodulated raster. Picture missing. (picture attached)
• Picture displays lines and strange foldover effect at centre.
• Picture shifted to the left. intermittently. Line tearing. intermittently. (extract of circuit diagram attached)
• +9V supply modification. (+ extract of circuit diagram)
• No tuning. (with circuit diagram extract)
• Line out of phase. Black band in centre of screen. No colour. (service info for PHILIPS -20GR105059H)
• Loud chriping after switch on. It becomes lower after a short time. (20GR105059H tip from PHILIPS)
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• 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.
• Red picture. Flyback lines.
• No picture. Audio OK .
• Slow hiccup (with circuit diagram extract)
• Green picture.
• No channel search. No OSD. (+ extract of circuit diagram)
• Hotel Mode activates by itself. (+ extract of circuit diagram)
• Dead. (+ extract of circuit diagram)
• No transmitters to adjust and the sound is not controllable.
• Intermittently no picture and sound at switch on. Buzz from speaker. (with circuit diagram extract)
• No start up, just a buzzing noise in speakers. (+ extract of circuit diagram)
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• Error messages indicated by front display flashing. (part of circuit diagram displayed)
• Line output stage does not function.
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (part of circuit diagram displayed)
• Whistle.
• No colour and vertical black bar across screen.
• Line output stage TS7528 is defective. (part of circuit diagram displayed)
• No audio.
• No start up. No standby. Attempts to start up, but fails.
• To put into hotel mode.
• To improve performance with prerecorded cassettes. (with circuit diagram extract)
• Initial volume level is higher than maximum Hotel mode setting.
• Picture only in two bars in upper screen section, the rest is dark. (with circuit diagram extract)
• Error codes.
• Focus adjustment.
• No audio.
• Modification introduced to +9V supply.
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• No +9V, line output stage is OK. (extract of circuit diagram attached)
• Initial volume level is higher than maximum Hotel mode setting.
• Poor synchronisation. (extract of circuit diagram attached)
• "Store" key does not work. (part of circuit diagram displayed)
• No power supply start up in loaded condition (eg. with lamp).
• Sound varies with picture content.
• Unable to tune or set volume in Prefix mode.
• Slow start up of power supply. (part of circuit diagram displayed)
• No audio. (PHILIPS - 20GR105059H information)
• Colour amplitude and phase adjustment procedure.
• Volume change with great fluctuations in brightness. (+ extract of circuit diagram)
• During picture changes sometimes a volume increase (plop) is heard. (picture attached)
• Line down middle of screen. (+ extract of circuit diagram)
• Colour flickers. No colour. after a while. (extract of circuit diagram attached)
• Dim picture with Hanover bars.
• Search jumps on UHF.
• Programs and PP-settings cannot be changed.
• Intermittently narrow picture, but corrects itself shortly after.
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (extract of circuit diagram attached)
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (picture attached)
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• Green screen with flyback line. No picture. OSD OK.
• Line tearing, especially with bright scences. (part of circuit diagram displayed)
• Buzzing.
• Intermittent colour.
• No tuning or on screen tuning display.
• Poor reproduction of copy protected tapes. (extract of circuit diagram attached)
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• Picture separating line appears. Whistling.
• Standby just pulsing.
• Programme tuning difficulty, stations shifted on tuning bar. (+ extract of circuit diagram)
• Field collapse normally with blank picture. (part of circuit diagram displayed)
• Using a lamp as a load. (20GR105059H tips)
• New IR receiver.
• Intermittent colour.
• No HV.
• No audio.
• Low 5V to micro chip. (with circuit diagram extract)
• No start-up. intermittently.
• Enable Hotel mode.
• Does not switch on, standby LED OK.
• No start-up. intermittently (when cold). (part of circuit diagram displayed)
• No HT from chopper circuit. (extract of circuit diagram attached)
• Stops at start up. (with circuit diagram extract)
• Trips. at start-up (intermittently). (part of circuit diagram displayed)
• Dark picture. Audio OK .
• Blank or green raster. Flyback lines. Faint picture or normal picture. (+ extract of circuit diagram)
• How to de-activate Hotel mode.
• Sound varies with picture content.
• Excessive brightness.
• Green raster. Faint picture. Flyback lines.
• Vertical vibration in cold condition of set.
• No functions. Standby LED flashes. Relay switches to ON.
• 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.
• V-centre adjustment procedure. (20GR105059H tips)
• New infra red receiver.
• Appliance can not be programmed. Search does not function. Only limited volume control.
• Stuck in standby. (with circuit diagram extract)
• Strongly distorted sound by low volume.
• Service manual correction. (picture attached)
• Failures in the power supply. (with circuit diagram extract)
• No audio.
• Control panel cover.
• The TV cannot hold the picture.
• Processor numbers (changed).
• Identification coil adjustment. (service info for PHILIPS -20GR105059H)
• No picture, sound ok but on turning up A1 control, frame collapse. (with circuit diagram extract)
• 10V on 95V line. (picture attached)
• No colour.
• Line output transistor becomes warm and in the course of time it becomes defective. (with circuit diagram extract)
• Limited volume. No channel search.
• The following production changes were introduced to prevent the set coming on in the store lock mode when switched on from standby. (part of circuit diagram displayed)
• Intermittent colour.
• No power with abnormal sound. (extract of circuit diagram attached)
• Slow start-up.
• Right hand side of screen has a line.
• Vertical line. on the right half screen. (extract of circuit diagram attached)
• Picture is mostly green with flyback lines after 10 secs from switch on.
• Excessive HV. after a while.
• Low audio.
• Whistling.
• Tuning drift, when it is hot the tuning is lost on channel change.
• Set goes accidentally into hotel mode.
• Sound returns gradually after channel change. (picture attached)
• Adjustment of +95V. (+ extract of circuit diagram) (20GR105059H PHILIPS repair tip)
• No picture. (picture attached)
• Microprocessor screening plate. (with circuit diagram extract)
• No line output stage. (part of circuit diagram displayed)
• No picture. No sound. Purring sound in loudspeaker. (+ extract of circuit diagram)
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault.
• Dead. At switch on the stand by LED flashes.