20GR105667R / PHILIPS [TV]

• How to enter/exit HOTEL mode. (20GR105667R tips)
• Intermittently no picture and sound at switch on. Buzz from speaker. (with circuit diagram extract)
• Poor synchronisation. when cold. (part of circuit diagram displayed)
• Sometimes when turned on, green screen only with flyback lines, at other times no tuning and channel will not change. (picture attached)
• Poor sync. AGC fault.
• Does not shut down (when cold).
• Dim picture with Hanover bars.
• Sound increases intermittently or "pops", especially during bright scenes. (part of circuit diagram displayed)
• Excessive brightness.
• No start-up. intermittently.
• Hotel mode.
• No colour. (extract of circuit diagram attached)
• Streaks in picture. Picture pulls and rolls intermittently.
• No sound or raster. The 95V HT supply is present at the line output stage but there is no line drive. (picture attached)
• No picture. (picture attached)
• Appliance will not switch on at times, but hums in the power supply section.
• Buzzing.
• No functions. after start-up (intermittently).
• Trips. (with circuit diagram extract)
• Unstable tuning.
• No function, starts up from standby, then goes out.
• No regulation. (picture attached)
• Does not start. Slight buzzing in loudspeaker.
• Unable to tune or set volume in Prefix mode.
• Low audio.
• Stuck in standby. (+ extract of circuit diagram)
• Buzzing from PSU. when cold. (picture attached)
• No switch on after activating mains switch. Whistling noise. (part of circuit diagram displayed)
• Green screen and at other times no tuning. (part of circuit diagram displayed)
• Slow start up of power supply. (with circuit diagram extract)
• No audio.
• Store lock on the appliance.
• Sound returns gradually after channel change. (+ extract of circuit diagram)
• No start up. No standby. Attempts to start up, but fails.
• Set does not retune or program etc
• Search jumps on UHF.
• Blank or green raster. Flyback lines. Faint picture or normal picture. (part of circuit diagram displayed)
• Programming unoperational. Limited sound adjustment possible.
• Whistling from PSU. (+ extract of circuit diagram)
• Stuck in hotel mode.
• Tuning menu can not be called. All other functions OK.
• Defective IC7103 SV-production. (+ extract of circuit diagram)
• Green screen with flyback line. No picture. OSD OK.
• Picture passes out in the centre.
• LED switches on then off immediately.
• No tuning bar when install button pressed and set not in hotel mode. (with circuit diagram extract)
• After replacement of the line output transistor BUT12, picture with trapezoid effect, BUT12 overheats and goes defective again. (part of circuit diagram displayed)
• No switch on. Low noise on sound. (with circuit diagram extract)
• No OSD. Picture OK .
• Picture centering has shifted horizontally. No OSD.
• Excessive horizontal size. (20GR105667R tips)
• PSU check.
• Appliance does not function with standby light flashing.
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (extract of circuit diagram attached) (20GR105667R PHILIPS repair tip)
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (part of circuit diagram displayed) (PHILIPS - 20GR105667R information)
• No picture. No audio. (part of circuit diagram displayed)
• Switches off by itself. after a while. (extract of circuit diagram attached)
• Programme channel search cannot be called up.
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (with circuit diagram extract)
• No or intermittent start-up. (+ extract of circuit diagram)
• No tuning, no remote volume control. (picture attached)
• No sound or picture. Low hum from speaker. (extract of circuit diagram attached)
• Green picture with retrace lines. After a few restarts picture OK.
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
• No voltage from PSU, computer does not work. (extract of circuit diagram attached)
• 10V on 95V line. (+ extract of circuit diagram)
• No tuning or on screen tuning display.
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• No line output stage. (with circuit diagram extract)
• No channel search. No OSD. (+ extract of circuit diagram)
• Reduced vertical size. at top. (20GR105667R tips)
• Picture shifted to the right. (extract of circuit diagram attached)
• Sound motorboating when cold. (part of circuit diagram displayed)
• Blank raster. No audio. after a while. (+ extract of circuit diagram)
• Excessive vertical size.
• No tuning - no channels. (20GR105667R tip from PHILIPS)
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (extract of circuit diagram attached)
• Dead. Strange noises from PSU/ line output transformer. (part of circuit diagram displayed)
• +9V supply modification. (picture attached)
• Line output stage does not function.
• How to switch off Hotel-Mode.
• Searches for channels continuously. (part of circuit diagram displayed)
• Volume varies. depending on picture content. (with circuit diagram extract)
• Vertical line. on the right half screen. (part of circuit diagram displayed)
• Production change to line drive. (part of circuit diagram displayed)
• Strongly distorted sound by low volume.
• PSU switches off with load at U95V. (picture attached)
• Green picture.
• SOPS defective. (with circuit diagram extract)
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (part of circuit diagram displayed)
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• No audio.
• Line down middle of screen. (+ extract of circuit diagram)
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (extract of circuit diagram attached)
• No operation. (20GR105667R tips)
• Height excessive. Defective linearity. Field blanking. (with circuit diagram extract)
• To release hotel mode (child lock). (20GR105667R PHILIPS repair tip)
• SIF DET adjustment procedure.
• Line output stage TS7528 is defective. (part of circuit diagram displayed)
• The removal of leaded diodes. (with circuit diagram extract)
• How to de-activate Hotel mode.
• Appliance can not be programmed. Search does not function. Only limited volume control. (20GR105667R tips)
• Colours flickers and disappears.
• Red picture. Flyback lines.
• Limited volume. No channel search.
• Turns on automatically. No RC or front panel controls.
• Blank raster. OSD OK .
• Line output stage does not start up. (extract of circuit diagram attached)
• Set comes on in store lock mode. (part of circuit diagram displayed)
• Sound varies with picture content.
• Does not switch on, standby LED OK.
• Picture shifted horizontally. (with circuit diagram extract)
• No start-up. intermittently (when cold). (extract of circuit diagram attached)
• Wavy picture. on the right.
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• PAL colour amplitude adjustment procedure.
• Stored channels are partially lost.
• Protection device (thyristor THY6641) is triggered at switch on. (with circuit diagram extract)
• Enter service mode.
• PSU does not start up, if appliance was switched off for a day. Appliance functions after short switch on/off. (+ extract of circuit diagram)
• Whistling.
• Initial volume level is higher than maximum Hotel mode setting.
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• Display goes to F1 a few seconds after switching the set on.
• Microcomputers and screening plate.
• Dead due to action of over voltage protection circuit.
• Dead. Low frequency noise on sound.
• Sound varies with picture content.
• No HT from chopper circuit. (extract of circuit diagram attached)
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning. (20GR105667R PHILIPS repair tip)
• 6613 type change. (picture attached)
• Processor numbers (changed). (20GR105667R tip from PHILIPS)
• No function. Standby LED flashes briefly. (part of circuit diagram displayed)
• No switch on. Weak whistling noise from PSU. LED is OFF.
• Line output stage only starts up for a short time. (picture attached)
• Slow hiccup (+ extract of circuit diagram)
• Blank raster. Flyback lines. (with circuit diagram extract)
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (+ extract of circuit diagram)
• Smeary, washed out picture with bent verticals. (+ extract of circuit diagram)
• Programme tuning difficulty. Stations has shifted on tuning bar.
• Failures in the power supply. (part of circuit diagram displayed)
• Sound varies with picture content.
• Reluctant to start from cold (extract of circuit diagram attached)
• Dead set. Tries to start.
• Intermittent colour and intermittent dark vertical bar on picture.
• How to switch off Hotel-Mode:
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• Buzzing sound then switches off.
• No +9V, line output stage is OK. (+ extract of circuit diagram)
• Does not regulate +95V.
• 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)
• Cannot be programmed and search does not function. Only limited volume adjustable.
• No line start up; +95 available; +9V is about 4.5V. (extract of circuit diagram attached)
• No tuning. only on certain channels.
• No freeze frame or intermittent freeze frame; no sound. (part of circuit diagram displayed)
• Power supply fault finding. (+ extract of circuit diagram) (PHILIPS - 20GR105667R information)
• Standby just pulsing. (PHILIPS - 20GR105667R information)
• No picture (when cold).
• Settings do not stay in position.
• No voltage from PSU. (with circuit diagram extract)
• No picture. No sound. Purring sound in loudspeaker. (extract of circuit diagram attached)
• Line out of phase. Black band in centre of screen. No colour.
• Service manual correction. (picture attached)
• No start-up. Standby LED flashes .
• No sound. No picture. Faint motorboating noise.
• CRT types.
• No picture, sound ok but on turning up A1 control, frame collapse. (+ extract of circuit diagram)
• Programme tuning difficulty, stations shifted on tuning bar. (+ extract of circuit diagram)
• Correction to service manual LOT winding.
• Change of C2523.
• Vertical collapse. (picture attached)
• Line output transistor TR7528 fails at switch on.
• Vertical vibration in cold condition of set.
• Crackling and popping in sound after a short time.
• Right side of picture discoloured.
• Intermittent destruction of line o/p transistor. (extract of circuit diagram attached)
• No colour and vertical black bar across screen.
• The switched-mode power supply cannot be loaded.
• Unstable tuning.
• Sound varies with picture content.
• Vertical size varies. intermittently.
• Colour sync adjustment procedure.
• Green picture. (with circuit diagram extract)
• Control micro processors.
• No horizontal synchronisation. (extract of circuit diagram attached)
• Chopper inoperative. (+ extract of circuit diagram)
• No colour.
• Low audio. (part of circuit diagram displayed)
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• Humming, motor noise and other unusual noises. Normal picture.
• Only half a picture. (picture attached) (20GR105667R tips)
• Buzz in audio (intermittently). (picture attached)
• Doesn't store stations correctly.
• Distorted audio.
• Comes on for a short time.
• Defective purity.
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• No colour.
• No functions, hum in loudspeakers. (part of circuit diagram displayed)
• Horizontal oscillator adjustment procedure.
• Bright flash on screen and no picture or sound after a few minutes. (+ extract of circuit diagram)
• Picture appears slowly.
• Sound goes to max. intermittently and HT varies. (part of circuit diagram displayed)
• Horizontal hold adjustment procedure. (20GR105667R tip from PHILIPS)
• No line output.
• Line transistor 7528 blows within 1 sec. (+ extract of circuit diagram)
• To improve performance with prerecorded cassettes. (picture attached)
• Hums softly. (with circuit diagram extract)
• Vertical roll. (picture attached)
• Tuning drifts. only on certain channels.
• Green picture.
• No picture. Audio OK .
• Switches to standby. (+ extract of circuit diagram)
• No function at switch on from standby. Switches to LOCK (hotel) mode. (part of circuit diagram displayed)
• Set goes accidentally into hotel mode.
• Intermittent colour.
• Slow start-up.
• Power supply does not oscillate. (part of circuit diagram displayed)
• Unregulated power supply. Pulsating picture and surging sound. (+ extract of circuit diagram)
• No start up, just a buzzing noise in speakers. (part of circuit diagram displayed)
• Search jumps on UHF.
• Error codes.
• Intermittent green picture, channels cannot be programmed. (part of circuit diagram displayed)
• The fuse and the bridge diodes in the power supply blow.
• No functions. Sound buzzes in loudspeaker. (part of circuit diagram displayed)
• Whistle.
• Intermittent colour. (20GR105667R PHILIPS repair tip)
• Replacement of surface mounted diode 6637. (extract of circuit diagram attached) (20GR105667R tips)
• Rolling or jittering picture. (part of circuit diagram displayed)
• Change of C2523.
• Standby LED lights up and switches off at power on. Appliance will not start up.
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• Bright picture. Flyback lines.
• Vertical oscillator adjustment procedure.
• Adjustment of +95V. (picture attached)
• No SOP supply. (part of circuit diagram displayed)
• Delay RF AGC adjustment procedure.
• No start-up. Buzzing from speakers and working noise of PSU.
• Loud chriping after switch on. It becomes lower after a short time.
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• Volume can't be tuned down. No tuning with RC. (picture attached)
• 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.
• Excessive HV. after a while.
• Identification coil adjustment.
• The TV does not stop during the tuning phase.
• No functions. Standby LED flashes. Relay switches to ON.
• R-Y and B-Y discriminator adjustment procedure. (+ extract of circuit diagram)
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• Replacement of TDA7052 with a TDA7052A.
• No HV.
• Unstable tuning.
• Difficult to tune programmes, stations shifted on tuning bar.
• Colours flickers and disappears.
• Cannot change tuning or stored settings. (picture attached)
• Picture shifted to the left. intermittently. Line tearing. intermittently. (part of circuit diagram displayed)
• Difficult startup. Rattling sound from line output trafo.
• Trips. at start-up (intermittently). (+ extract of circuit diagram)
• Noise in audio. (20GR105667R tips)
• The following production changes were introduced to prevent the set coming on in the store lock mode when switched on from standby. (picture attached)
• Dead. Only hum from speakers. (with circuit diagram extract)
• Colour disappears with VCR-scan (picture search). (extract of circuit diagram attached)
• Replacing the EAROM. (picture attached)
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (extract of circuit diagram attached)
• Bright flash on screen. No picture or sound. (part of circuit diagram displayed)
• To remove store/lock. (20GR105667R tips)
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (picture attached)
• No functions. when cold.
• Dark picture. Audio OK . (20GR105667R tips)
• Using a lamp as a load.
• New IR receiver.
• Memory loss. (+ extract of circuit diagram)
• Change of C2523.
• Line tearing. on lower half screen. (with circuit diagram extract)
• Tuning drifts. (with circuit diagram extract)
• After working normally for a while the TV blocks in any position. The functions do not work.
• No power supply start up in loaded condition (eg. with lamp).
• Initial volume level is higher than maximum Hotel mode setting.
• Noise in sound. Mute does not function.
• Enable Hotel mode. (PHILIPS - 20GR105667R information)
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (with circuit diagram extract)
• Tuning procedure. (service info for PHILIPS -20GR105667R)
• How to de-activate Hotel-Mode:
• New infra red receiver.
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (picture attached)
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• Dead with whistling noise coming from power supply. (part of circuit diagram displayed)
• Search jumps on UHF.
• Focus adjustment.
• Becomes defective immediately after switch on.
• Dim picture with Hanover bars visible. (+ extract of circuit diagram)
• No tuning. No channel lock. (picture attached)
• Drive for high voltage missing. (extract of circuit diagram attached)
• Initial volume level is higher than maximum Hotel mode setting.
• Intermittent colour.
• Dead. Low hum.
• Buzz in audio. No picture. (PHILIPS - 20GR105667R information)
• No audio. (20GR105667R tip from PHILIPS)
• Picture separating line appears. Whistling.
• During picture changes sometimes a volume increase (plop) is heard. (extract of circuit diagram attached)
• Initial volume level is higher than maximum hotel mode setting.
• PSU peeps +95 is ca 0,8v
• No connection for headphone.
• Loosing colour during play-back of a video tape. (with circuit diagram extract)
• LED does not flash. Slight buzz in appliance. (with circuit diagram extract)
• No picture and sound. Low hum intermittently, no function.
• Dark picture. (20GR105667R tips)
• Skips channels during tuning. only on certain channels. (20GR105667R tips)
• Random breakdown of line output transistor. (picture attached)
• 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)
• Line output transistor fails repeatedly. (extract of circuit diagram attached)
• V-centre adjustment procedure.
• Description of SMPS. (with circuit diagram extract)
• Volume goes to max. No volume control.
• No tuning.
• LED flashes once, then gurgles. (+ extract of circuit diagram)
• Picture is mostly green with flyback lines after 10 secs from switch on.
• Line output transistor replacement.
• Control panel cover.
• Local controls inoperative.
• Modification at line transformer position 5530. (extract of circuit diagram attached)
• Line output transistor becomes warm and in the course of time it becomes defective. (with circuit diagram extract)
• Picture is poor with rippling on verticals. (+ extract of circuit diagram)
• No audio.
• Microprocessor screening plate. (with circuit diagram extract)
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
• No start up from cold and humming.
• Picture is faint with hanover bars. (with circuit diagram extract)
• Volume change with great fluctuations in brightness. (with circuit diagram extract)
• No standby, humming and standby LED blinks.
• Squealing from PSU. (PHILIPS - 20GR105667R information)
• Colour amplitude and phase adjustment procedure.
• Modification introduced to +9V supply.
• Stops at start up. (picture attached)
• Excessive green.
• Picture displays lines and strange foldover effect at centre.
• Enable Hotel mode. Disable hotel mode.
• No transmitters to adjust and the sound is not controllable.
• Appliance is dead with standby LED flashing after a few seconds. (extract of circuit diagram attached)
• No vertical deflection. (with circuit diagram extract)
• Intermittently dead. (extract of circuit diagram attached) (20GR105667R tip from PHILIPS)
• White balance adjustment.
• No start-up. when cold. (with circuit diagram extract)
• Print with linearity coil pos. 5800.
• No functions. Slow start-up. (picture attached)
• Line tearing and rope effect.
• Green raster. Faint picture. Flyback lines.
• The tone (sound) tunes well, but the volume cannot be raised.
• No picture. TXT OK . (+ extract of circuit diagram) (20GR105667R PHILIPS repair tip)
• No tuning possible, F2 appears on bottom of picture and S1 on top.
• Hotel Mode activates by itself. (+ extract of circuit diagram) (service info for PHILIPS -20GR105667R)
• Blown chopper. (picture attached)
• Bell filter adjustment procedure.
• How to switch OFF Hotel-Mode.
• How to reset microprocessor.
• Does not stop on stations.
• Picture fails for a short time. (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. (extract of circuit diagram attached)
• No function. When switching on with RC, standby LED lights up. (extract of circuit diagram attached)
• Horizontal white line.
• Lines across top of picture about 8" in first 100 lines. (extract of circuit diagram attached)
• No power with abnormal sound. (part of circuit diagram displayed) (20GR105667R tip from PHILIPS)
• Hazy flickering picture at top. (picture attached)
• Change of C2523. (20GR105667R tip from PHILIPS)
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• Colours flicker and disappears.
• Connection of a loop system to the TV.
• No audio.
• Field collapse normally with blank picture. (extract of circuit diagram attached)
• Dead. Low level buzz from loudspeaker. (+ extract of circuit diagram)
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (extract of circuit diagram attached)
• Intermittently dead. after start-up.
• Colour flickers. No colour. after a while. (with circuit diagram extract) (service info for PHILIPS -20GR105667R)
• Line tearing, especially with bright scences. (with circuit diagram extract)
• Unstable tuning.
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off. (PHILIPS - 20GR105667R information)
• Does not start up at once from cold.
• How to de-activate Hotel-Mode. (PHILIPS - 20GR105667R information)
• Dead. At switch on the stand by LED flashes. (20GR105667R PHILIPS repair tip)
• No audio.
• Low 5V to micro chip. (+ extract of circuit diagram)
• The TV cannot hold the picture.
• "Store" key does not work. (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. Switching on and off from Standby OK.
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Initial volume level is higher than maximum Hotel mode setting.
• Intermittently narrow picture, but corrects itself shortly after.
• To put into hotel mode.
• Dead. (with circuit diagram extract)
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault.
• Fizzling sound from speakers at start-up and intermittently picture jagged.
• Picture shifts. (extract of circuit diagram attached) (20GR105667R tips)
• Secondary main power supply OK except +9V at 5.8V
• Tuning drift, when it is hot the tuning is lost on channel change.
• White unmodulated raster. Picture missing. (+ extract of circuit diagram)
• Line output transistor running hot. (picture attached)
• No tuning. (with circuit diagram extract)
• Reduced horizontal size. (extract of circuit diagram attached)
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (picture attached)
• Intermittent audio and picture. (picture attached)
• Tuning drifts. only on certain channels (after a while). (service info for PHILIPS -20GR105667R)
• Automatic fine tuning (AFT) field alignment procedure.
• 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.
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• Memory content dropout at positions 4 and 5.
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• Blue picture. Coloured lines.
• Programs and PP-settings cannot be changed.
• Poor reproduction of copy protected tapes. (part of circuit diagram displayed)
• No start-up. (extract of circuit diagram attached)
• Tripping. (+ extract of circuit diagram)
• No audio.
• High voltage transistor defective after a while.
• Error messages indicated by front display flashing. (picture attached)
• Stations won't change. Picture and sound OK. Other functions OK.
• Interference in audio. Interference in picture. (picture attached)
• No picture. OSD OK .
• Two lines going around. (part of circuit diagram displayed)
• Right hand side of screen has a line.
• Low frequency noise on sound.
• Picture only in two bars in upper screen section, the rest is dark. (with circuit diagram extract)
• Change of C2523.
• No colour. (service info for PHILIPS -20GR105667R)
• Skips channels during tuning. (+ extract of circuit diagram)
• U743 tuner replacement. (+ extract of circuit diagram)
• Dead, very slight whistle from PSU.
• Occasionally appliance does not switch on from standby. No further functions are possible.
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• No frame or short frame. (part of circuit diagram displayed) (20GR105667R tip from PHILIPS)
• Quick hiccup. (picture attached)
• +B very high. (with circuit diagram extract)
• Difficultly in tuning to correct position.
• No colour in OSD.
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (picture attached)
• Reluctant to start up from cold.
• Menu rolling. (with circuit diagram extract)
• Poor synchronisation. (with circuit diagram extract)
• No functions. Hum in loudspeaker. No LED lit.
• How to de-activate volume limiter.