20GR105668R / PHILIPS [TV]

• No function. When switching on with RC, standby LED lights up. (with circuit diagram extract)
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault. (20GR105668R PHILIPS repair tip)
• Does not shut down (when cold).
• Does not stop on stations.
• Reduced horizontal size. (picture attached)
• No start up, just a buzzing noise in speakers. (extract of circuit diagram attached)
• +9V supply modification. (+ extract of circuit diagram)
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (with circuit diagram extract)
• Dead set. Tries to start.
• Change of C2523.
• Appliance can not be programmed. Search does not function. Only limited volume control.
• Horizontal oscillator adjustment procedure.
• Service manual correction. (extract of circuit diagram attached)
• Processor numbers (changed).
• LED switches on then off immediately.
• No audio.
• LED flashes once, then gurgles. (+ extract of circuit diagram)
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (part of circuit diagram displayed)
• Automatic fine tuning (AFT) field alignment procedure.
• No vertical deflection. (picture attached) (20GR105668R tip from PHILIPS)
• Dead. Low level buzz from loudspeaker. (part of circuit diagram displayed)
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (picture attached)
• No HT from chopper circuit. (extract of circuit diagram attached)
• Lines across top of picture about 8" in first 100 lines. (+ extract of circuit diagram)
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again. (20GR105668R tip from PHILIPS)
• Enter service mode.
• Dark picture. Audio OK .
• How to reset microprocessor.
• Right side of picture discoloured. (20GR105668R PHILIPS repair tip)
• Dead. Low hum.
• Volume change with great fluctuations in brightness. (part of circuit diagram displayed)
• Colours flickers and disappears.
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• Tuning menu can not be called. All other functions OK.
• 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. (picture attached)
• No function, starts up from standby, then goes out.
• Dead. Strange noises from PSU/ line output transformer. (with circuit diagram extract)
• No picture, sound ok but on turning up A1 control, frame collapse. (part of circuit diagram displayed)
• No or intermittent start-up. (part of circuit diagram displayed)
• No freeze frame or intermittent freeze frame; no sound. (with circuit diagram extract)
• Fizzling sound from speakers at start-up and intermittently picture jagged. (PHILIPS - 20GR105668R information)
• No start-up. (part of circuit diagram displayed)
• Dark picture.
• Switches off by itself. after a while. (with circuit diagram extract)
• No line output stage. (part of circuit diagram displayed)
• Squealing from PSU. (service info for PHILIPS -20GR105668R)
• Blue picture. Coloured lines. (20GR105668R PHILIPS repair tip)
• Excessive green.
• Change of C2523.
• No audio.
• Stuck in hotel mode.
• Crackling and popping in sound after a short time.
• No tuning - no channels.
• PSU switches off with load at U95V. (part of circuit diagram displayed)
• 10V on 95V line. (extract of circuit diagram attached)
• Dead, very slight whistle from PSU.
• Sound varies with picture content.
• Unable to tune or set volume in Prefix mode.
• Delay RF AGC adjustment procedure.
• 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)
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (with circuit diagram extract)
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (part of circuit diagram displayed)
• Sound motorboating when cold. (picture attached)
• Does not start. Slight buzzing in loudspeaker.
• Bright flash on screen. No picture or sound. (part of circuit diagram displayed)
• How to switch off Hotel-Mode:
• Volume varies. depending on picture content. (with circuit diagram extract)
• Green screen with flyback line. No picture. OSD OK.
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (extract of circuit diagram attached) (20GR105668R tip from PHILIPS)
• Becomes defective immediately after switch on.
• Unstable tuning. (service info for PHILIPS -20GR105668R)
• Horizontal white line.
• Programming unoperational. Limited sound adjustment possible.
• PSU peeps +95 is ca 0,8v
• No power supply start up in loaded condition (eg. with lamp).
• Trips. at start-up (intermittently). (+ extract of circuit diagram)
• Local controls inoperative.
• No picture. No sound. Switching on and off from Standby OK.
• Searches for channels continuously. (with circuit diagram extract)
• Low 5V to micro chip. (part of circuit diagram displayed)
• Dead. Low frequency noise on sound.
• No start-up. intermittently (when cold). (part of circuit diagram displayed) (service info for PHILIPS -20GR105668R)
• No voltage from PSU. (with circuit diagram extract)
• Dead. (part of circuit diagram displayed)
• Set goes accidentally into hotel mode.
• Blown chopper. (extract of circuit diagram attached) (service info for PHILIPS -20GR105668R)
• Dead with whistling noise coming from power supply. (picture attached)
• Difficultly in tuning to correct position. (20GR105668R tips)
• Error codes.
• No regulation. (with circuit diagram extract)
• No audio.
• Sound increases intermittently or "pops", especially during bright scenes. (part of circuit diagram displayed)
• Hums softly. (with circuit diagram extract)
• Reluctant to start up from cold.
• The fuse and the bridge diodes in the power supply blow.
• Enable Hotel mode. Disable hotel mode.
• Sound goes to max. intermittently and HT varies. (+ extract of circuit diagram)
• Skips channels during tuning. (with circuit diagram extract)
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (part of circuit diagram displayed)
• Random breakdown of line output transistor. (extract of circuit diagram attached)
• Sound varies with picture content.
• White unmodulated raster. Picture missing. (extract of circuit diagram attached)
• Streaks in picture. Picture pulls and rolls intermittently.
• Programs and PP-settings cannot be changed.
• LED does not flash. Slight buzz in appliance. (picture attached)
• To remove store/lock.
• No picture. TXT OK . (with circuit diagram extract)
• The following production changes were introduced to prevent the set coming on in the store lock mode when switched on from standby. (+ extract of circuit diagram)
• Switches to standby. (+ extract of circuit diagram)
• Settings do not stay in position.
• Initial volume level is higher than maximum Hotel mode setting.
• Poor synchronisation. when cold. (with circuit diagram extract)
• Hazy flickering picture at top. (part of circuit diagram displayed) (20GR105668R PHILIPS repair tip)
• Trips. (picture attached)
• Appliance will not switch on at times, but hums in the power supply section.
• Stations won't change. Picture and sound OK. Other functions OK.
• Low frequency noise on sound.
• Does not switch on, standby LED OK.
• The switched-mode power supply cannot be loaded.
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (+ extract of circuit diagram)
• Red picture. Flyback lines.
• New IR receiver. (20GR105668R tips)
• No tuning. only on certain channels.
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• Identification coil adjustment.
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• Standby just pulsing.
• After working normally for a while the TV blocks in any position. The functions do not work.
• Tripping. (part of circuit diagram displayed)
• Difficult startup. Rattling sound from line output trafo.
• No line output.
• Vertical collapse. (with circuit diagram extract)
• Unstable tuning.
• Intermittent green picture, channels cannot be programmed. (part of circuit diagram displayed)
• No colour in OSD.
• 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)
• No start-up. Buzzing from speakers and working noise of PSU. (PHILIPS - 20GR105668R information)
• No functions. when cold.
• Bright flash on screen and no picture or sound after a few minutes. (picture attached)
• Picture is mostly green with flyback lines after 10 secs from switch on.
• Drive for high voltage missing. (+ extract of circuit diagram)
• Initial volume level is higher than maximum Hotel mode setting.
• CRT types.
• Replacement of TDA7052 with a TDA7052A.
• Unstable tuning.
• Replacing the EAROM. (+ extract of circuit diagram)
• Line output stage does not start up. (+ extract of circuit diagram)
• Vertical size varies. intermittently. (service info for PHILIPS -20GR105668R)
• No picture. (+ extract of circuit diagram)
• Enable Hotel mode.
• No transmitters to adjust and the sound is not controllable.
• Standby LED lights up and switches off at power on. Appliance will not start up.
• No tuning bar when install button pressed and set not in hotel mode. (with circuit diagram extract)
• Colour amplitude and phase adjustment procedure.
• Picture shifted to the right. (part of circuit diagram displayed)
• Power supply does not oscillate. (picture attached)
• No tuning. No channel lock. (picture attached)
• Picture separating line appears. Whistling.
• To release hotel mode (child lock).
• Display goes to F1 a few seconds after switching the set on.
• No functions. Slow start-up. (part of circuit diagram displayed)
• Dead due to action of over voltage protection circuit.
• Programme tuning difficulty. Stations has shifted on tuning bar.
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• Whistling from PSU. (with circuit diagram extract)
• To put into hotel mode.
• Defective purity. (service info for PHILIPS -20GR105668R)
• Right hand side of screen has a line. (PHILIPS - 20GR105668R information)
• Replacement of surface mounted diode 6637. (+ extract of circuit diagram)
• No start up. No standby. Attempts to start up, but fails.
• Dead. Only hum from speakers. (with circuit diagram extract)
• Bright picture. Flyback lines.
• 6613 type change. (with circuit diagram extract)
• U743 tuner replacement. (with circuit diagram extract)
• No channel search. No OSD. (picture attached)
• Cannot change tuning or stored settings. (+ extract of circuit diagram)
• Buzzing from PSU. when cold. (extract of circuit diagram attached)
• Secondary main power supply OK except +9V at 5.8V
• Modification introduced to +9V supply.
• Intermittent destruction of line o/p transistor. (part of circuit diagram displayed)
• Excessive HV. after a while.
• No picture. OSD OK . (PHILIPS - 20GR105668R information)
• Comes on for a short time.
• SOPS defective. (with circuit diagram extract)
• Only half a picture. (part of circuit diagram displayed)
• Protection device (thyristor THY6641) is triggered at switch on. (picture attached)
• Green picture.
• No tuning or on screen tuning display.
• Noise in sound. Mute does not function.
• No start up from cold and humming.
• Sound returns gradually after channel change. (extract of circuit diagram attached)
• 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.
• White balance adjustment.
• No functions, hum in loudspeakers. (extract of circuit diagram attached)
• No picture. No audio. (picture attached)
• Limited volume. No channel search.
• Slow hiccup (picture attached)
• Green raster. Faint picture. Flyback lines.
• Intermittently dead. (with circuit diagram extract)
• Line tearing, especially with bright scences. (picture attached)
• Menu rolling. (with circuit diagram extract)
• Store lock on the appliance.
• No HV.
• Intermittent colour.
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• No +9V, line output stage is OK. (extract of circuit diagram attached)
• The removal of leaded diodes. (part of circuit diagram displayed) (20GR105668R PHILIPS repair tip)
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• Line transistor 7528 blows within 1 sec. (+ extract of circuit diagram)
• Green picture.
• Search jumps on UHF. (PHILIPS - 20GR105668R information)
• Vertical vibration in cold condition of set.
• Buzzing sound then switches off.
• No sound or picture. Low hum from speaker. (extract of circuit diagram attached)
• Appliance does not function with standby light flashing.
• Line output stage does not function.
• Excessive vertical size.
• No power with abnormal sound. (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 picture. Audio OK .
• Low audio. (with circuit diagram extract) (20GR105668R tip from PHILIPS)
• Skips channels during tuning. only on certain channels.
• Using a lamp as a load.
• Initial volume level is higher than maximum Hotel mode setting.
• Volume goes to max. No volume control.
• No functions. after start-up (intermittently).
• The TV does not stop during the tuning phase.
• Change of C2523.
• Field collapse normally with blank picture. (extract of circuit diagram attached)
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• Sound varies with picture content. (20GR105668R PHILIPS repair tip)
• Tuning procedure.
• Green picture with retrace lines. After a few restarts picture OK.
• Tuning drifts. (extract of circuit diagram attached)
• Production change to line drive. (with circuit diagram extract)
• No tuning.
• Defective IC7103 SV-production. (with circuit diagram extract)
• No SOP supply. (+ extract of circuit diagram)
• Reluctant to start from cold (+ extract of circuit diagram)
• Buzz in audio (intermittently). (+ extract of circuit diagram)
• Colour flickers. No colour. after a while. (with circuit diagram extract)
• Change of C2523.
• The TV cannot hold the picture.
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• Colour disappears with VCR-scan (picture search). (picture attached)
• Dim picture with Hanover bars.
• No audio. (service info for PHILIPS -20GR105668R)
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (+ extract of circuit diagram)
• How to enter/exit HOTEL mode.
• Turns on automatically. No RC or front panel controls.
• Connection of a loop system to the TV. (20GR105668R PHILIPS repair tip)
• No colour.
• Correction to service manual LOT winding. (20GR105668R PHILIPS repair tip)
• How to switch off Hotel-Mode.
• No colour and vertical black bar across screen.
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (picture attached)
• Blank raster. No audio. after a while. (extract of circuit diagram attached)
• Vertical line. on the right half screen. (extract of circuit diagram attached)
• Poor synchronisation. (with circuit diagram extract) (PHILIPS - 20GR105668R information)
• Dead. At switch on the stand by LED flashes.
• Line output transistor becomes warm and in the course of time it becomes defective. (part of circuit diagram displayed)
• Vertical roll. (part of circuit diagram displayed) (20GR105668R tip from PHILIPS)
• No functions. Standby LED flashes. Relay switches to ON.
• PAL colour amplitude adjustment procedure.
• No tuning. (+ extract of circuit diagram)
• Hotel Mode activates by itself. (part of circuit diagram displayed) (service info for PHILIPS -20GR105668R)
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (picture attached)
• No functions. Sound buzzes in loudspeaker. (picture attached)
• Dim picture with Hanover bars visible. (picture attached)
• Description of SMPS. (+ extract of circuit diagram)
• +B very high. (picture attached)
• Excessive horizontal size.
• No start-up. when cold. (part of circuit diagram displayed)
• Stuck in standby. (with circuit diagram extract)
• Modification at line transformer position 5530. (extract of circuit diagram attached)
• Whistling.
• No sound. No picture. Faint motorboating noise.
• No connection for headphone. (20GR105668R tip from PHILIPS)
• Loosing colour during play-back of a video tape. (extract of circuit diagram attached)
• Programme channel search cannot be called up.
• Appliance is dead with standby LED flashing after a few seconds. (part of circuit diagram displayed)
• Colours flickers and disappears.
• Distorted audio.
• Line output stage only starts up for a short time. (+ extract of circuit diagram)
• No horizontal synchronisation. (picture attached)
• Picture appears slowly.
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• No switch on after activating mains switch. Whistling noise. (extract of circuit diagram attached) (PHILIPS - 20GR105668R information)
• Line output transistor replacement.
• Difficult to tune programmes, stations shifted on tuning bar.
• Sound varies with picture content.
• No picture and sound. Low hum intermittently, no function.
• No function at switch on from standby. Switches to LOCK (hotel) mode. (part of circuit diagram displayed)
• No voltage from PSU, computer does not work. (part of circuit diagram displayed)
• How to de-activate Hotel-Mode.
• Picture shifted to the left. intermittently. Line tearing. intermittently. (with circuit diagram extract)
• Memory content dropout at positions 4 and 5.
• Line down middle of screen. (extract of circuit diagram attached)
• How to switch OFF Hotel-Mode. (20GR105668R PHILIPS repair tip)
• Unstable tuning.
• Change of C2523.
• No start-up. Standby LED flashes . (20GR105668R tips)
• Height excessive. Defective linearity. Field blanking. (extract of circuit diagram attached)
• No tuning, no remote volume control. (part of circuit diagram displayed)
• Picture displays lines and strange foldover effect at centre.
• No switch on. Low noise on sound. (with circuit diagram extract) (PHILIPS - 20GR105668R information)
• Print with linearity coil pos. 5800.
• Low audio.
• No audio. (20GR105668R PHILIPS repair tip)
• How to de-activate Hotel-Mode:
• No picture (when cold).
• Intermittently narrow picture, but corrects itself shortly after.
• Does not regulate +95V. (service info for PHILIPS -20GR105668R)
• Initial volume level is higher than maximum hotel mode setting.
• Blank or green raster. Flyback lines. Faint picture or normal picture. (with circuit diagram extract)
• No picture. No sound. Purring sound in loudspeaker. (picture attached)
• Slow start up of power supply. (picture attached) (PHILIPS - 20GR105668R information)
• The tone (sound) tunes well, but the volume cannot be raised.
• Intermittently no picture and sound at switch on. Buzz from speaker. (+ extract of circuit diagram)
• Power supply fault finding. (extract of circuit diagram attached) (20GR105668R PHILIPS repair tip)
• Picture is poor with rippling on verticals. (with circuit diagram extract)
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (part of circuit diagram displayed)
• Occasionally appliance does not switch on from standby. No further functions are possible.
• Whistle.
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Line output stage TS7528 is defective. (extract of circuit diagram attached)
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• Horizontal hold adjustment procedure.
• Picture shifted horizontally. (with circuit diagram extract)
• No switch on. Weak whistling noise from PSU. LED is OFF.
• Failures in the power supply. (part of circuit diagram displayed)
• Wavy picture. on the right.
• Slow start-up.
• Set comes on in store lock mode. (part of circuit diagram displayed)
• No audio.
• Does not start up at once from cold.
• Reduced vertical size. at top. (service info for PHILIPS -20GR105668R)
• Noise in audio.
• PSU does not start up, if appliance was switched off for a day. Appliance functions after short switch on/off. (with circuit diagram extract)
• High voltage transistor defective after a while.
• Line output transistor fails repeatedly. (extract of circuit diagram attached) (20GR105668R tips)
• Hotel mode.
• Excessive brightness.
• Stops at start up. (with circuit diagram extract)
• No OSD. Picture 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 standby, humming and standby LED blinks.
• Humming, motor noise and other unusual noises. Normal picture.
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• No functions. Hum in loudspeaker. No LED lit.
• Intermittent colour and intermittent dark vertical bar on picture.
• "Store" key does not work. (with circuit diagram extract)
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (extract of circuit diagram attached)
• Cannot be programmed and search does not function. Only limited volume adjustable.
• Chopper inoperative. (+ extract of circuit diagram)
• Memory loss. (picture attached)
• Microcomputers and screening plate.
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• Bell filter adjustment procedure.
• Intermittently dead. after start-up.
• Unregulated power supply. Pulsating picture and surging sound. (picture attached)
• PSU check.
• No start-up. intermittently.
• Tuning drifts. only on certain channels.
• Tuning drift, when it is hot the tuning is lost on channel change.
• Picture only in two bars in upper screen section, the rest is dark. (extract of circuit diagram attached)
• Picture passes out in the centre.
• Adjustment of +95V. (part of circuit diagram displayed)
• Stored channels are partially lost.
• Poor reproduction of copy protected tapes. (with circuit diagram extract)
• During picture changes sometimes a volume increase (plop) is heard. (extract of circuit diagram attached)
• To improve performance with prerecorded cassettes. (with circuit diagram extract)
• Volume can't be tuned down. No tuning with RC. (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)
• Line tearing. on lower half screen. (extract of circuit diagram attached)
• Colours flicker and disappears. (20GR105668R tips)
• Doesn't store stations correctly.
• Quick hiccup. (with circuit diagram extract)
• Picture shifts. (+ extract of circuit diagram) (20GR105668R tips)
• No colour.
• Colour sync adjustment procedure.
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• Green screen and at other times no tuning. (+ extract of circuit diagram)
• 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. (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.
• Set does not retune or program etc
• Rolling or jittering picture. (extract of circuit diagram attached)
• R-Y and B-Y discriminator adjustment procedure. (part of circuit diagram displayed)
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers. (20GR105668R tip from PHILIPS)
• No audio. (20GR105668R tips)
• Picture is faint with hanover bars. (with circuit diagram extract)
• Loud chriping after switch on. It becomes lower after a short time.
• Intermittent colour.
• No tuning possible, F2 appears on bottom of picture and S1 on top.
• V-centre adjustment procedure.
• Programme tuning difficulty, stations shifted on tuning bar. (+ extract of circuit diagram)
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• Focus adjustment. (20GR105668R tips)
• Green picture. (part of circuit diagram displayed)
• Line output transistor TR7528 fails at switch on.
• No colour.
• Two lines going around. (extract of circuit diagram attached)
• Search jumps on UHF.
• Blank raster. OSD OK . (20GR105668R tips)
• Intermittent colour.
• No function. Standby LED flashes briefly. (part of circuit diagram displayed) (PHILIPS - 20GR105668R information)
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (+ extract of circuit diagram)
• No colour. (picture attached)
• Buzzing.
• Error messages indicated by front display flashing. (picture attached)
• Control panel cover.
• Search jumps on UHF.
• Smeary, washed out picture with bent verticals. (with circuit diagram extract)
• How to de-activate volume limiter.
• Vertical oscillator adjustment procedure.
• Interference in audio. Interference in picture. (+ extract of circuit diagram)
• No line start up; +95 available; +9V is about 4.5V. (with circuit diagram extract)
• New infra red receiver.
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode". (20GR105668R tips)
• Line out of phase. Black band in centre of screen. No colour.
• Line tearing and rope effect.
• Poor sync. AGC fault.
• No frame or short frame. (+ extract of circuit diagram)
• Initial volume level is higher than maximum Hotel mode setting.
• Line output transistor running hot. (+ extract of circuit diagram)
• Strongly distorted sound by low volume.
• Tuning drifts. only on certain channels (after a while).
• Control micro processors.
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off. (20GR105668R tips)
• Microprocessor screening plate. (+ extract of circuit diagram)
• How to de-activate Hotel mode.
• Blank raster. Flyback lines. (with circuit diagram extract)
• Buzz in audio. No picture.
• SIF DET adjustment procedure.
• Intermittent audio and picture. (extract of circuit diagram attached)
• Picture fails for a short time. (+ extract of circuit diagram) (20GR105668R tip from PHILIPS)
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• No operation.
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• Picture centering has shifted horizontally. No OSD.