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EURAS System

20GR105577R / PHILIPS [TV]

The EURAS repair tip database for professional technicians and service engineers supplies the following faults for 20GR105577R / PHILIPS.

List of fault symptoms:
  • Dead. (with circuit diagram extract)
  • No colour in OSD.
  • Line output stage does not function.
  • Intermittent channel drift in UHF. Channel search OK. VHF OK. (service info for PHILIPS -20GR105577R)
  • No line start up; +95 available; +9V is about 4.5V. (extract of circuit diagram attached)
  • Blank raster. No audio. after a while. (part of circuit diagram displayed)
  • The TV does not stop during the tuning phase.
  • Dead. At switch on the stand by LED flashes.
  • Hazy flickering picture at top. (+ extract of circuit diagram)
  • Squealing from PSU.
  • Bright flash on screen and no picture or sound after a few minutes. (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)
  • Occasionally appliance does not switch on from standby. No further functions are possible. (20GR105577R tip from PHILIPS)
  • Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (+ extract of circuit diagram)
  • No start-up. when cold. (part of circuit diagram displayed)
  • Programming unoperational. Limited sound adjustment possible.
  • How to de-activate Hotel-Mode:
  • No functions. after start-up (intermittently).
  • No audio.
  • Sound varies with picture content.
  • No function. When switching on with RC, standby LED lights up. (with circuit diagram extract)
  • White balance adjustment.
  • No line output.
  • PSU switches off with load at U95V. (picture attached)
  • Microcomputers and screening plate.
  • 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 start-up. Buzzing from speakers and working noise of PSU.
  • Fizzling sound from speakers at start-up and intermittently picture jagged.
  • During picture changes sometimes a volume increase (plop) is heard. (with circuit diagram extract)
  • No start-up. Standby LED flashes .
  • No vertical deflection. (part of circuit diagram displayed)
  • PSU check.
  • Using a lamp as a load.
  • Does not stop on stations.
  • Cannot change tuning or stored settings. (with circuit diagram extract)
  • Initial volume level is higher than maximum Hotel mode setting.
  • After switching on the CTV "EXT...1.2.3..." appears on the screen.
  • No switch on after activating mains switch. Whistling noise. (part of circuit diagram displayed)
  • Appliance does not function with standby light flashing.
  • After working normally for a while the TV blocks in any position. The functions do not work.
  • No OSD. Picture OK .
  • Appliance can not be programmed. Search does not function. Only limited volume control.
  • No audio.
  • No picture or sound but RCU works correctly. LED flashes when the handset is tried. (+ extract of circuit diagram)
  • Programme channel search cannot be called up.
  • No power with abnormal sound. (picture attached)
  • No frame or short frame. (extract of circuit diagram attached)
  • "Store" key does not work. (extract of circuit diagram attached)
  • 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 attached)
  • Strongly distorted sound by low volume.
  • Dark picture.
  • No colour. (picture attached)
  • Only half a picture. (with circuit diagram extract)
  • The fuse and the bridge diodes in the power supply blow.
  • Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
  • Cannot be programmed and search does not function. Only limited volume adjustable.
  • Colour disappears with VCR-scan (picture search). (picture attached)
  • Dead. Only hum from speakers. (part of circuit diagram displayed)
  • Volume varies. depending on picture content. (part of circuit diagram displayed)
  • Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
  • No picture and sound. Low hum intermittently, no function. (20GR105577R tip from PHILIPS)
  • Blank raster. Flyback lines. (with circuit diagram extract)
  • Production change to line drive. (extract of circuit diagram attached) (20GR105577R PHILIPS repair tip)
  • New IR receiver.
  • Picture is mostly green with flyback lines after 10 secs from switch on. (PHILIPS - 20GR105577R information)
  • To put into hotel mode.
  • Sound varies with picture content.
  • Crackling and popping in sound after a short time.
  • Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
  • Line output stage TS7528 is defective. (extract of circuit diagram attached)
  • Line output transistor running hot. (with circuit diagram extract)
  • Whistle. (20GR105577R tip from PHILIPS)
  • Limited volume. No channel search.
  • 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 function, starts up from standby, then goes out. (service info for PHILIPS -20GR105577R)
  • Excessive brightness. (20GR105577R PHILIPS repair tip)
  • Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
  • Modification introduced to +9V supply.
  • The following production changes were introduced to prevent the set coming on in the store lock mode when switched on from standby. (picture attached)
  • LED flashes once, then gurgles. (extract of circuit diagram attached)
  • Intermittent colour.
  • Change of C2523.
  • Wavy picture. on the right.
  • Buzzing from PSU. when cold. (with circuit diagram extract)
  • Menu rolling. (+ extract of circuit diagram)
  • Intermittent colour.
  • Switches off by itself. after a while. (picture attached)
  • Replacing the EAROM. (picture attached)
  • No connection for headphone.
  • Does not switch on, standby LED OK.
  • No tuning. (+ extract of circuit diagram)
  • No function. Standby-LED lights up. Appliance switches on but no picture or sound.
  • No function. Motorboating from PSU. TV starts up randomly. Intermittent fault.
  • Initial volume level is higher than maximum Hotel mode setting.
  • Picture passes out in the centre.
  • CRT types.
  • Horizontal white line.
  • Dim picture with Hanover bars visible. (with circuit diagram extract)
  • Processor numbers (changed). (20GR105577R tip from PHILIPS)
  • Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning. (PHILIPS - 20GR105577R information)
  • Programs and PP-settings cannot be changed.
  • Vertical size varies. intermittently. (service info for PHILIPS -20GR105577R)
  • Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (picture attached)
  • Excessive vertical size. (20GR105577R tips)
  • No audio. (20GR105577R tip from PHILIPS)
  • How to de-activate Hotel mode.
  • Stuck in hotel mode.
  • Green raster. Faint picture. Flyback lines.
  • Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
  • LED does not flash. Slight buzz in appliance. (with circuit diagram extract)
  • Dead with whistling noise coming from power supply. (picture attached)
  • No picture. OSD OK .
  • Appliance is dead with standby LED flashing after a few seconds. (part of circuit diagram displayed)
  • Lines across top of picture about 8" in first 100 lines. (extract of circuit diagram attached)
  • No power supply start up in loaded condition (eg. with lamp).
  • No picture. TXT OK . (with circuit diagram extract) (20GR105577R tips)
  • Colour sync adjustment procedure.
  • No picture. Audio OK .
  • Colours flickers and disappears.
  • Search jumps on UHF.
  • Tuning drifts. only on certain channels (after a while).
  • Standby LED lights up and switches off at power on. Appliance will not start up.
  • SOPS defective. (part of circuit diagram displayed)
  • How to switch OFF Hotel-Mode.
  • No functions, hum in loudspeakers. (+ extract of circuit diagram)
  • No colour and vertical black bar across screen.
  • Does not regulate +95V.
  • Standby just pulsing.
  • No audio.
  • Stops at start up. (part of circuit diagram displayed) (20GR105577R tips)
  • Noise in sound. Mute does not function.
  • Description of SMPS. (part of circuit diagram displayed)
  • Sound varies with picture content.
  • No functions. Hum in loudspeaker. No LED lit.
  • Excessive horizontal size.
  • Unstable tuning.
  • No standby, humming and standby LED blinks.
  • No SOP supply. (extract of circuit diagram attached)
  • Intermittently narrow picture, but corrects itself shortly after.
  • Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
  • Slow start up of power supply. (+ extract of circuit diagram)
  • 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) (20GR105577R tips)
  • R-Y and B-Y discriminator adjustment procedure. (+ extract of circuit diagram)
  • Adjustment of +95V. (+ extract of circuit diagram)
  • No channel search. No OSD. (+ extract of circuit diagram)
  • Random breakdown of line output transistor. (with circuit diagram extract)
  • 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)
  • Replacement of TDA7052 with a TDA7052A.
  • Picture shifted horizontally. (part of circuit diagram displayed)
  • Set won't tune to high frequency channels and lower frequency channels appear to be higher. (picture attached) (PHILIPS - 20GR105577R information)
  • Stations won't change. Picture and sound OK. Other functions OK.
  • Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
  • How to enter/exit HOTEL mode.
  • High voltage transistor defective after a while.
  • Green picture.
  • +B very high. (extract of circuit diagram attached)
  • Line down middle of screen. (with circuit diagram extract)
  • Modification at line transformer position 5530. (part of circuit diagram displayed)
  • Protection device (thyristor THY6641) is triggered at switch on. (with circuit diagram extract)
  • White unmodulated raster. Picture missing. (part of circuit diagram displayed)
  • Tuning menu can not be called. All other functions OK.
  • No tuning. only on certain channels. (PHILIPS - 20GR105577R information)
  • Two lines going around. (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.
  • To release hotel mode (child lock).
  • The TV cannot hold the picture.
  • Poor synchronisation. (part of circuit diagram displayed)
  • Bell filter adjustment procedure.
  • Unstable tuning.
  • Dead. Low frequency noise on sound.
  • Tuning procedure.
  • Error messages indicated by front display flashing. (+ extract of circuit diagram)
  • Poor synchronisation. when cold. (picture attached)
  • Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (picture attached)
  • Error codes.
  • Change of C2523.
  • Focus adjustment.
  • Field collapse normally with blank picture. (+ extract of circuit diagram)
  • Only some programs with snowy picture can be tuned and on band 1 missing some programs. (picture attached)
  • Comes on in standby. When program button pressed standby lamp blinks then goes off.
  • 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
  • Memory loss. (with circuit diagram extract)
  • +9V supply modification. (picture attached)
  • Buzzing.
  • Does not shut down (when cold).
  • How to reset microprocessor.
  • Reduced vertical size. at top.
  • Height excessive. Defective linearity. Field blanking. (with circuit diagram extract)
  • Sound goes to max. intermittently and HT varies. (with circuit diagram extract)
  • Does not start up at once from cold.
  • No tuning or on screen tuning display.
  • Connection of a loop system to the TV.
  • Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (picture attached)
  • Intermittent colour and intermittent dark vertical bar on picture.
  • Dead. Strange noises from PSU/ line output transformer. (+ extract of circuit diagram)
  • Automatic fine tuning (AFT) field alignment procedure.
  • No audio.
  • Right side of picture discoloured.
  • Volume can't be tuned down. No tuning with RC. (+ extract of circuit diagram) (service info for PHILIPS -20GR105577R)
  • No tuning - no channels.
  • Display goes to F1 a few seconds after switching the set on.
  • Difficult startup. Rattling sound from line output trafo.
  • No transmitters to adjust and the sound is not controllable. (PHILIPS - 20GR105577R information)
  • Noise in audio.
  • Intermittent green picture, channels cannot be programmed. (picture attached)
  • No start-up. (picture attached) (20GR105577R tips)
  • Service manual correction. (with circuit diagram extract)
  • No functions. Standby LED flashes. Relay switches to ON.
  • Green picture with retrace lines. After a few restarts picture OK.
  • White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (+ extract of circuit diagram)
  • Volume goes to max. No volume control.
  • Dead. Low level buzz from loudspeaker. (picture attached)
  • Vertical oscillator adjustment procedure.
  • No picture. (extract of circuit diagram attached)
  • No picture. No audio. (extract of circuit diagram attached)
  • Whistling.
  • Picture shifted to the right. (extract of circuit diagram attached) (20GR105577R tip from PHILIPS)
  • Vertical line. on the right half screen. (part of circuit diagram displayed)
  • Blank or green raster. Flyback lines. Faint picture or normal picture. (part of circuit diagram displayed)
  • No function. Standby LED flashes briefly. (+ extract of circuit diagram)
  • Blank raster. OSD OK .
  • No functions. when cold.
  • Sound increases intermittently or "pops", especially during bright scenes. (extract of circuit diagram attached)
  • Identification coil adjustment.
  • Red picture. Flyback lines.
  • Sound varies with picture content.
  • No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (extract of circuit diagram attached)
  • Hums softly. (picture attached)
  • No horizontal synchronisation. (with circuit diagram extract)
  • Line output stage does not start up. (picture attached)
  • Line tearing and rope effect. (20GR105577R tip from PHILIPS)
  • Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
  • No sound. No picture. Faint motorboating noise.
  • No start up from cold and humming.
  • Power supply does not oscillate. (picture attached)
  • Line output stage only starts up for a short time. (+ extract of circuit diagram) (service info for PHILIPS -20GR105577R)
  • Excessive HV. after a while.
  • Microprocessor screening plate. (with circuit diagram extract)
  • Picture shifts. (part of circuit diagram displayed)
  • Control micro processors.
  • No tuning.
  • Green screen with flyback line. No picture. OSD OK.
  • PAL colour amplitude adjustment procedure.
  • Reluctant to start from cold (extract of circuit diagram attached)
  • Blown chopper. (picture attached)
  • Field foldover at switch on from cold. Effect disappears when appliance warms up. (with circuit diagram extract)
  • No tuning, no remote volume control. (+ extract of circuit diagram)
  • Picture is faint with hanover bars. (+ extract of circuit diagram)
  • Sound returns gradually after channel change. (part of circuit diagram displayed)
  • Unregulated power supply. Pulsating picture and surging sound. (part of circuit diagram displayed)
  • Dead. Low hum.
  • Enable Hotel mode. Disable hotel mode.
  • Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (part of circuit diagram displayed)
  • Sound motorboating when cold. (picture attached)
  • Set goes accidentally into hotel mode.
  • Picture displays lines and strange foldover effect at centre.
  • Appliance will not switch on at times, but hums in the power supply section.
  • Line tearing, especially with bright scences. (with circuit diagram extract) (service info for PHILIPS -20GR105577R)
  • Local controls inoperative.
  • 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)
  • Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (extract of circuit diagram attached) (PHILIPS - 20GR105577R information)
  • No operation.
  • No start up, just a buzzing noise in speakers. (picture attached)
  • Enable Hotel mode.
  • Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
  • Change of C2523.
  • SIF DET adjustment procedure.
  • Dead due to action of over voltage protection circuit.
  • Vertical collapse. (+ extract of circuit diagram)
  • No colour.
  • No picture. No sound. Purring sound in loudspeaker. (picture attached)
  • Intermittently no picture and sound at switch on. Buzz from speaker. (part of circuit diagram displayed)
  • Difficultly in tuning to correct position.
  • Picture fails for a short time. (+ extract of circuit diagram)
  • No HV.
  • LED switches on then off immediately.
  • Poor reproduction of copy protected tapes. (with circuit diagram extract)
  • No colour.
  • No voltage from PSU. (+ extract of circuit diagram)
  • Picture shifted to the left. intermittently. Line tearing. intermittently. (part of circuit diagram displayed)
  • Blue picture. Coloured lines.
  • Failures in the power supply. (extract of circuit diagram attached)
  • How to de-activate volume limiter.
  • Picture only in two bars in upper screen section, the rest is dark. (extract of circuit diagram attached)
  • Low audio.
  • No colour.
  • Programme tuning difficulty, stations shifted on tuning bar. (part of circuit diagram displayed)
  • Skips channels during tuning. (with circuit diagram extract)
  • No switch on. Weak whistling noise from PSU. LED is OFF.
  • Initial volume level is higher than maximum Hotel mode setting.
  • Colour flickers. No colour. after a while. (+ extract of circuit diagram) (20GR105577R tip from PHILIPS)
  • Colour amplitude and phase adjustment procedure.
  • Picture centering has shifted horizontally. No OSD.
  • Poor sync. AGC fault.
  • Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (with circuit diagram extract)
  • Trips. at start-up (intermittently). (extract of circuit diagram attached)
  • Difficult to tune programmes, stations shifted on tuning bar.
  • Search jumps on UHF.
  • Store lock on the appliance.
  • New infra red receiver.
  • Humming, motor noise and other unusual noises. Normal picture.
  • No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (part of circuit diagram displayed)
  • How to switch off Hotel-Mode.
  • Low audio. (+ extract of circuit diagram)
  • Initial volume level is higher than maximum hotel mode setting.
  • Green picture.
  • How to switch off Hotel-Mode:
  • No switch on. Low noise on sound. (picture attached)
  • Dim picture with Hanover bars.
  • No line output stage. (+ extract of circuit diagram)
  • Line output transistor TR7528 fails at switch on.
  • The switched-mode power supply cannot be loaded.
  • Loud chriping after switch on. It becomes lower after a short time.
  • No +9V, line output stage is OK. (extract of circuit diagram attached) (20GR105577R tip from PHILIPS)
  • Stored channels drift off tune briefly after switch on. Crackle in sound. (PHILIPS - 20GR105577R information)
  • Buzzing sound then switches off.
  • Memory content dropout at positions 4 and 5.
  • Tuning drift, when it is hot the tuning is lost on channel change. (service info for PHILIPS -20GR105577R)
  • No or intermittent start-up. (with circuit diagram extract)
  • Unstable tuning. (PHILIPS - 20GR105577R information)
  • Streaks in picture. Picture pulls and rolls intermittently.
  • Turns on automatically. No RC or front panel controls.
  • Picture separating line appears. Whistling.
  • How to de-activate Hotel-Mode.
  • To improve performance with prerecorded cassettes. (+ extract of circuit diagram) (PHILIPS - 20GR105577R information)
  • Intermittent audio and picture. (picture attached)
  • Horizontal oscillator adjustment procedure.
  • Doesn't store stations correctly.
  • No regulation. (with circuit diagram extract)
  • Power supply fault finding. (extract of circuit diagram attached)
  • No tuning. No channel lock. (extract of circuit diagram attached)
  • Line tearing. on lower half screen. (+ extract of circuit diagram)
  • No tuning possible, F2 appears on bottom of picture and S1 on top.
  • Dead, very slight whistle from PSU.
  • Whistling from PSU. (+ extract of circuit diagram)
  • Hotel Mode activates by itself. (with circuit diagram extract)
  • Volume change with great fluctuations in brightness. (+ extract of circuit diagram)
  • Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
  • Horizontal hold adjustment procedure.
  • 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)
  • No functions. Sound buzzes in loudspeaker. (part of circuit diagram displayed) (20GR105577R tip from PHILIPS)
  • 10V on 95V line. (extract of circuit diagram attached)
  • Smeary, washed out picture with bent verticals. (+ extract of circuit diagram) (PHILIPS - 20GR105577R information)
  • Unable to tune or set volume in Prefix mode.
  • Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
  • No start-up. intermittently (when cold). (+ extract of circuit diagram)
  • No functions. Slow start-up. (extract of circuit diagram attached)
  • The tone (sound) tunes well, but the volume cannot be raised.
  • Set comes on in store lock mode. (extract of circuit diagram attached)
  • Loosing colour during play-back of a video tape. (picture attached)
  • No picture (when cold).
  • Line transistor 7528 blows within 1 sec. (part of circuit diagram displayed)
  • Change of C2523.
  • Interference in audio. Interference in picture. (with circuit diagram extract)
  • Bright flash on screen. No picture or sound. (part of circuit diagram displayed)
  • Settings do not stay in position.
  • Line output transistor becomes warm and in the course of time it becomes defective. (+ extract of circuit diagram)
  • Secondary main power supply OK except +9V at 5.8V
  • 6613 type change. (with circuit diagram extract)
  • Search jumps on UHF.
  • Stored channels are partially lost.
  • Slow start-up.
  • Picture is poor with rippling on verticals. (+ extract of circuit diagram)
  • No voltage from PSU, computer does not work. (part of circuit diagram displayed) (20GR105577R PHILIPS repair tip)
  • Does not start. Slight buzzing in loudspeaker. (20GR105577R PHILIPS repair tip)
  • Line output transistor replacement.
  • Delay RF AGC adjustment procedure.
  • Hotel mode.
  • U743 tuner replacement. (extract of circuit diagram attached)
  • No picture, sound ok but on turning up A1 control, frame collapse. (+ extract of circuit diagram)
  • Set does not retune or program etc
  • No picture. No sound. Switching on and off from Standby OK.
  • Slow hiccup (picture attached)
  • Trips. (with circuit diagram extract)
  • Picture appears slowly.
  • Tuning drifts. (with circuit diagram extract)
  • Enter service mode.
  • Right hand side of screen has a line.
  • Switches to standby. (picture attached)
  • Drive for high voltage missing. (extract of circuit diagram attached)
  • Lines on picture after approx one hour. It consists of a band of bright white lines about two inches wide. (picture attached)
  • No freeze frame or intermittent freeze frame; no sound. (picture attached)
  • Colours flicker and disappears.
  • No audio.
  • No tuning bar when install button pressed and set not in hotel mode. (with circuit diagram extract) (20GR105577R PHILIPS repair tip)
  • Control panel cover.
  • Defective IC7103 SV-production. (extract of circuit diagram attached)
  • Intermittent destruction of line o/p transistor. (with circuit diagram extract)
  • Green screen and at other times no tuning. (part of circuit diagram displayed)
  • Initial volume level is higher than maximum Hotel mode setting.
  • Intermittently dead. after start-up.
  • The removal of leaded diodes. (part of circuit diagram displayed) (20GR105577R tip from PHILIPS)
  • Intermittent colour.
  • Line output transistor fails repeatedly. (picture attached)
  • To remove store/lock.
  • Dark picture. Audio OK .
  • Memory cannot be opened via "rhombus". Stored channels cannot be changed.
  • Low frequency noise on sound.
  • No sound or picture. Low hum from speaker. (with circuit diagram extract)
  • Searches for channels continuously. (+ extract of circuit diagram)
  • Becomes defective immediately after switch on.
  • Reduced horizontal size. (+ extract of circuit diagram)
  • No HT from chopper circuit. (+ extract of circuit diagram)
  • Green picture. (picture attached)
  • Defective purity.
  • Vertical vibration in cold condition of set.
  • Print with linearity coil pos. 5800.
  • Correction to service manual LOT winding. (20GR105577R PHILIPS repair tip)
  • Replacement of surface mounted diode 6637. (+ extract of circuit diagram)
  • V-centre adjustment procedure. (service info for PHILIPS -20GR105577R)
  • Low 5V to micro chip. (picture attached)
  • No audio.
  • Colours flickers and disappears. (20GR105577R tips)
  • No function at switch on from standby. Switches to LOCK (hotel) mode. (with circuit diagram extract) (service info for PHILIPS -20GR105577R)
  • Unstable tuning.
  • Buzz in audio. No picture.
  • Vertical roll. (+ extract of circuit diagram)
  • Rolling or jittering picture. (+ extract of circuit diagram) (20GR105577R tips)
  • Change of C2523.
  • Excessive green.
  • Bright picture. Flyback lines.
  • Dead set. Tries to start.
  • Comes on for a short time.
  • Quick hiccup. (extract of circuit diagram attached)
  • Chopper inoperative. (extract of circuit diagram attached)
  • No start up. No standby. Attempts to start up, but fails.
  • Intermittently dead. (+ extract of circuit diagram)
  • Buzz in audio (intermittently). (with circuit diagram extract)
  • Line out of phase. Black band in centre of screen. No colour.
  • Tripping. (extract of circuit diagram attached)
  • Tuning drifts. only on certain channels.
  • PSU peeps +95 is ca 0,8v
  • Dead. Power LED is OFF (ON in standby). Hissing from PSU.
  • Programme tuning difficulty. Stations has shifted on tuning bar.
  • Reluctant to start up from cold. (20GR105577R PHILIPS repair tip)
  • Stuck in standby. (extract of circuit diagram attached)
  • Distorted audio.
  • Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off.
  • Skips channels during tuning. only on certain channels.
  • No start-up. intermittently.

With help of this list a solution is found often when PHILIPS 20GR105577R fails.


Additionally to repairtips or service information 20GR105577R is linked to 60 components (IC's and/or transformers) in the Tectra database, through which you can identify electrical compatibilities (crossreferences) in appliances.


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In the repair discussion pinboard for 20GR105577R there are 35 replies to questions asked about 12 different repair problems.
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Last updated: 07. Nov 2009 17:55:26 MET, doccode ISO9002AS168EKA200805C EURASMOP

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