20GR105052R / PHILIPS [TV]

• To put into hotel mode.
• Reluctant to start from cold (picture attached)
• LED flashes once, then gurgles. (extract of circuit diagram attached)
• Tuning drift, when it is hot the tuning is lost on channel change.
• Sound returns gradually after channel change. (extract of circuit diagram attached)
• Enter service mode.
• Line down middle of screen. (+ extract of circuit diagram)
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
• 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 attached)
• Unstable tuning.
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (part of circuit diagram displayed)
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• Buzzing from PSU. when cold. (extract of circuit diagram attached)
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (with circuit diagram extract)
• No function, starts up from standby, then goes out.
• SOPS defective. (with circuit diagram extract)
• Vertical oscillator adjustment procedure. (20GR105052R PHILIPS repair tip)
• 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) (PHILIPS - 20GR105052R information)
• Sound varies with picture content.
• Local controls inoperative. (20GR105052R PHILIPS repair tip)
• Intermittently dead. after start-up.
• Unregulated power supply. Pulsating picture and surging sound. (+ extract of circuit diagram)
• Modification introduced to +9V supply.
• Right hand side of screen has a line.
• Error messages indicated by front display flashing. (part of circuit diagram displayed)
• Skips channels during tuning. (extract of circuit diagram attached)
• No sound or picture. Low hum from speaker. (with circuit diagram extract)
• No horizontal synchronisation. (picture attached)
• To improve performance with prerecorded cassettes. (+ extract of circuit diagram)
• Intermittently no picture and sound at switch on. Buzz from speaker. (with circuit diagram extract)
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• Slow hiccup (+ extract of circuit diagram) (20GR105052R tip from PHILIPS)
• Humming, motor noise and other unusual noises. Normal picture.
• Adjustment of +95V. (with circuit diagram extract)
• Tuning procedure. (PHILIPS - 20GR105052R information)
• Initial volume level is higher than maximum Hotel mode setting.
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (extract of circuit diagram attached) (20GR105052R tip from PHILIPS)
• Dark picture. Audio OK . (20GR105052R PHILIPS repair tip)
• How to switch off Hotel-Mode:
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• Line output stage does not function.
• The switched-mode power supply cannot be loaded.
• No audio.
• Appliance is dead with standby LED flashing after a few seconds. (+ extract of circuit diagram) (20GR105052R tips)
• Standby just pulsing.
• How to de-activate volume limiter.
• Picture passes out in the centre. (20GR105052R tips)
• Intermittent colour.
• To release hotel mode (child lock).
• Tuning drifts. (extract of circuit diagram attached)
• Difficult startup. Rattling sound from line output trafo.
• Stuck in standby. (part of circuit diagram displayed)
• Lines across top of picture about 8" in first 100 lines. (with circuit diagram extract)
• Line output stage TS7528 is defective. (picture attached)
• The tone (sound) tunes well, but the volume cannot be raised.
• Colours flickers and disappears.
• Difficultly in tuning to correct position. (20GR105052R tip from PHILIPS)
• 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. (service info for PHILIPS -20GR105052R)
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• No functions. after start-up (intermittently).
• Blank raster. Flyback lines. (with circuit diagram extract)
• R-Y and B-Y discriminator adjustment procedure. (with circuit diagram extract)
• Difficult to tune programmes, stations shifted on tuning bar.
• Initial volume level is higher than maximum Hotel mode setting.
• Volume varies. depending on picture content. (+ extract of circuit diagram) (20GR105052R tips)
• Sound varies with picture content.
• Switches to standby. (extract of circuit diagram attached)
• Change of C2523.
• Using a lamp as a load.
• Intermittently dead. (+ extract of circuit diagram)
• Search jumps on UHF.
• V-centre adjustment procedure.
• Bright flash on screen. No picture or sound. (+ extract of circuit diagram)
• No line start up; +95 available; +9V is about 4.5V. (+ extract of circuit diagram) (20GR105052R tips)
• Set comes on in store lock mode. (part of circuit diagram displayed)
• Loud chriping after switch on. It becomes lower after a short time.
• Vertical collapse. (picture attached) (20GR105052R tip from PHILIPS)
• No tuning or on screen tuning display.
• No start-up. Standby LED flashes .
• No HV.
• No functions. Slow start-up. (picture attached)
• Initial volume level is higher than maximum hotel mode setting.
• How to de-activate Hotel-Mode.
• "Store" key does not work. (part of circuit diagram displayed)
• After replacement of the line output transistor BUT12, picture with trapezoid effect, BUT12 overheats and goes defective again. (extract of circuit diagram attached)
• Stops at start up. (with circuit diagram extract)
• Skips channels during tuning. only on certain channels.
• Colours flickers and disappears.
• No vertical deflection. (part of circuit diagram displayed) (20GR105052R PHILIPS repair tip)
• No or intermittent start-up. (with circuit diagram extract)
• Smeary, washed out picture with bent verticals. (+ extract of circuit diagram)
• Picture displays lines and strange foldover effect at centre.
• The fuse and the bridge diodes in the power supply blow. (20GR105052R PHILIPS repair tip)
• Low audio.
• Does not switch on, standby LED OK.
• Production change to line drive. (+ extract of circuit diagram)
• Dead. Strange noises from PSU/ line output transformer. (picture attached)
• Display goes to F1 a few seconds after switching the set on.
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (picture attached)
• Search jumps on UHF.
• How to de-activate Hotel-Mode:
• Loosing colour during play-back of a video tape. (with circuit diagram extract)
• 6613 type change. (with circuit diagram extract)
• New IR receiver.
• Blank raster. OSD OK .
• No functions, hum in loudspeakers. (+ extract of circuit diagram)
• No start up, just a buzzing noise in speakers. (with circuit diagram extract)
• No audio.
• Distorted audio.
• Excessive horizontal size.
• Intermittent audio and picture. (extract of circuit diagram attached)
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• During picture changes sometimes a volume increase (plop) is heard. (extract of circuit diagram attached)
• Green raster. Faint picture. Flyback lines.
• Trips. (picture attached)
• Picture shifted horizontally. (part of circuit diagram displayed) (service info for PHILIPS -20GR105052R)
• +9V supply modification. (picture attached) (20GR105052R tips)
• Menu rolling. (+ extract of circuit diagram)
• Hazy flickering picture at top. (+ extract of circuit diagram)
• Vertical roll. (part of circuit diagram displayed)
• Poor reproduction of copy protected tapes. (extract of circuit diagram attached) (20GR105052R tip from PHILIPS)
• PAL colour amplitude adjustment procedure.
• Dim picture with Hanover bars.
• LED does not flash. Slight buzz in appliance. (with circuit diagram extract)
• Appliance does not function with standby light flashing.
• Picture shifts. (picture attached)
• Green picture. (extract of circuit diagram attached)
• Replacement of surface mounted diode 6637. (extract of circuit diagram attached)
• No colour. (service info for PHILIPS -20GR105052R)
• Whistling.
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (picture attached)
• Field collapse normally with blank picture. (part of circuit diagram displayed)
• Sound increases intermittently or "pops", especially during bright scenes. (part of circuit diagram displayed)
• Line output transistor becomes warm and in the course of time it becomes defective. (with circuit diagram extract)
• Slow start up of power supply. (+ extract of circuit diagram)
• No function. Standby LED flashes briefly. (extract of circuit diagram attached)
• Quick hiccup. (picture attached)
• No switch on after activating mains switch. Whistling noise. (with circuit diagram extract)
• Blank or green raster. Flyback lines. Faint picture or normal picture. (picture attached)
• Intermittent colour.
• No power with abnormal sound. (with circuit diagram extract)
• Enable Hotel mode.
• Microprocessor screening plate. (extract of circuit diagram attached)
• No picture and sound. Low hum intermittently, no function.
• No frame or short frame. (picture attached)
• How to de-activate Hotel mode.
• Tripping. (extract of circuit diagram attached)
• Buzzing sound then switches off.
• Searches for channels continuously. (with circuit diagram extract)
• Line tearing, especially with bright scences. (part of circuit diagram displayed) (PHILIPS - 20GR105052R information)
• Two lines going around. (+ extract of circuit diagram)
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off.
• Stuck in hotel mode.
• 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)
• Control micro processors.
• No start-up. intermittently.
• Dead. At switch on the stand by LED flashes.
• Programs and PP-settings cannot be changed.
• Processor numbers (changed).
• Control panel cover.
• Defective purity.
• The TV cannot hold the picture.
• Dead set. Tries to start.
• Sound varies with picture content.
• Volume goes to max. No volume control.
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• Unstable tuning.
• Interference in audio. Interference in picture. (picture attached)
• Low frequency noise on sound. (service info for PHILIPS -20GR105052R)
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (+ extract of circuit diagram)
• Tuning menu can not be called. All other functions OK.
• Cannot change tuning or stored settings. (extract of circuit diagram attached) (20GR105052R tip from PHILIPS)
• Dead, very slight whistle from PSU.
• No functions. when cold.
• No functions. Sound buzzes in loudspeaker. (with circuit diagram extract)
• No function at switch on from standby. Switches to LOCK (hotel) mode. (part of circuit diagram displayed)
• Initial volume level is higher than maximum Hotel mode setting.
• Sound varies with picture content. (20GR105052R PHILIPS repair tip)
• Colour amplitude and phase adjustment procedure.
• Buzz in audio (intermittently). (with circuit diagram extract)
• Reluctant to start up from cold.
• No picture. Audio OK . (service info for PHILIPS -20GR105052R)
• Occasionally appliance does not switch on from standby. No further functions are possible.
• Blue picture. Coloured lines.
• After working normally for a while the TV blocks in any position. The functions do not work.
• Change of C2523. (service info for PHILIPS -20GR105052R)
• No line output stage. (part of circuit diagram displayed)
• LED switches on then off immediately.
• Chopper inoperative. (+ extract of circuit diagram)
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (part of circuit diagram displayed)
• Colour disappears with VCR-scan (picture search). (+ extract of circuit diagram)
• No picture. OSD OK .
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (part of circuit diagram displayed)
• Line transistor 7528 blows within 1 sec. (+ extract of circuit diagram)
• Dead. Only hum from speakers. (with circuit diagram extract)
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (extract of circuit diagram attached)
• Picture is faint with hanover bars. (+ extract of circuit diagram)
• No tuning, no remote volume control. (picture attached)
• Volume can't be tuned down. No tuning with RC. (with circuit diagram extract)
• Enable Hotel mode. Disable hotel mode.
• Connection of a loop system to the TV.
• Switches off by itself. after a while. (with circuit diagram extract)
• Line output transistor replacement.
• Colour sync adjustment procedure.
• Set does not retune or program etc
• Power supply fault finding. (extract of circuit diagram attached)
• No function. When switching on with RC, standby LED lights up. (extract of circuit diagram attached)
• Noise in audio.
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• 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.
• Dim picture with Hanover bars visible. (+ extract of circuit diagram)
• No picture. No sound. Purring sound in loudspeaker. (with circuit diagram extract)
• No audio.
• Dark picture.
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• +B very high. (part of circuit diagram displayed)
• Fizzling sound from speakers at start-up and intermittently picture jagged.
• Does not regulate +95V.
• Dead. (extract of circuit diagram attached)
• Line output stage only starts up for a short time. (+ extract of circuit diagram)
• Print with linearity coil pos. 5800.
• Picture is poor with rippling on verticals. (part of circuit diagram displayed)
• 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)
• No channel search. No OSD. (with circuit diagram extract)
• Picture shifted to the left. intermittently. Line tearing. intermittently. (part of circuit diagram displayed)
• Change of C2523.
• No tuning.
• No regulation. (part of circuit diagram displayed)
• Service manual correction. (part of circuit diagram displayed) (PHILIPS - 20GR105052R information)
• Buzz in audio. No picture.
• Whistling from PSU. (part of circuit diagram displayed)
• Picture appears slowly.
• Does not start. Slight buzzing in loudspeaker.
• Slow start-up.
• Random breakdown of line output transistor. (picture attached)
• Height excessive. Defective linearity. Field blanking. (picture attached)
• Intermittent destruction of line o/p transistor. (part of circuit diagram displayed) (20GR105052R tip from PHILIPS)
• Replacing the EAROM. (part of circuit diagram displayed)
• Doesn't store stations correctly.
• PSU peeps +95 is ca 0,8v
• Bell filter adjustment procedure.
• No switch on. Low noise on sound. (picture attached)
• Horizontal hold adjustment procedure.
• Reduced vertical size. at top.
• Sound motorboating when cold. (with circuit diagram extract) (PHILIPS - 20GR105052R information)
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (part of circuit diagram displayed)
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (with circuit diagram extract)
• To remove store/lock.
• Delay RF AGC adjustment procedure.
• Programming unoperational. Limited sound adjustment possible.
• CRT types.
• Programme tuning difficulty. Stations has shifted on tuning bar.
• Blown chopper. (picture attached)
• No picture. No audio. (part of circuit diagram displayed)
• Correction to service manual LOT winding.
• Poor synchronisation. (part of circuit diagram displayed) (20GR105052R tip from PHILIPS)
• Line tearing and rope effect.
• Unstable tuning.
• No tuning. (part of circuit diagram displayed)
• Settings do not stay in position.
• Does not shut down (when cold).
• Crackling and popping in sound after a short time.
• No picture. (part of circuit diagram displayed)
• Poor synchronisation. when cold. (extract of circuit diagram attached)
• No voltage from PSU. (with circuit diagram extract)
• Line output transistor fails repeatedly. (+ extract of circuit diagram) (service info for PHILIPS -20GR105052R)
• No voltage from PSU, computer does not work. (extract of circuit diagram attached)
• Failures in the power supply. (picture attached)
• No picture, sound ok but on turning up A1 control, frame collapse. (part of circuit diagram displayed)
• Streaks in picture. Picture pulls and rolls intermittently. (service info for PHILIPS -20GR105052R)
• Buzzing.
• U743 tuner replacement. (extract of circuit diagram attached)
• Programme channel search cannot be called up.
• Picture centering has shifted horizontally. No OSD.
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• Microcomputers and screening plate.
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• White balance adjustment.
• Protection device (thyristor THY6641) is triggered at switch on. (+ extract of circuit diagram)
• Description of SMPS. (part of circuit diagram displayed)
• Dead. Low level buzz from loudspeaker. (extract of circuit diagram attached)
• Change of C2523.
• No start-up. when cold. (picture attached) (PHILIPS - 20GR105052R information)
• Dead due to action of over voltage protection circuit.
• No freeze frame or intermittent freeze frame; no sound. (part of circuit diagram displayed)
• How to switch off Hotel-Mode.
• How to enter/exit HOTEL mode.
• Does not start up at once from cold.
• 10V on 95V line. (with circuit diagram extract) (PHILIPS - 20GR105052R information)
• SIF DET adjustment procedure.
• Error codes. (20GR105052R tip from PHILIPS)
• No start-up. intermittently (when cold). (picture attached)
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault. (20GR105052R tip from PHILIPS)
• No +9V, line output stage is OK. (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.
• Appliance can not be programmed. Search does not function. Only limited volume control.
• No start-up. (with circuit diagram extract)
• How to switch OFF Hotel-Mode.
• Change of C2523.
• Stored channels drift off tune briefly after switch on. Crackle in sound. (20GR105052R PHILIPS repair tip)
• Modification at line transformer position 5530. (with circuit diagram extract) (20GR105052R tip from PHILIPS)
• Green picture with retrace lines. After a few restarts picture OK. (PHILIPS - 20GR105052R information)
• No sound. No picture. Faint motorboating noise.
• No SOP supply. (part of circuit diagram displayed) (20GR105052R tips)
• Intermittently narrow picture, but corrects itself shortly after.
• Horizontal white line.
• Excessive green.
• No start up from cold and humming.
• Picture shifted to the right. (picture attached)
• Drive for high voltage missing. (extract of circuit diagram attached)
• Low 5V to micro chip. (extract of circuit diagram attached)
• Excessive vertical size.
• No colour in OSD.
• Line tearing. on lower half screen. (+ extract of circuit diagram)
• Line out of phase. Black band in centre of screen. No colour.
• Dead with whistling noise coming from power supply. (with circuit diagram extract)
• Power supply does not oscillate. (extract of circuit diagram attached)
• Intermittent colour.
• PSU check. (service info for PHILIPS -20GR105052R)
• No colour and vertical black bar across screen.
• Defective IC7103 SV-production. (extract of circuit diagram attached)
• No HT from chopper circuit. (extract of circuit diagram attached)
• No start-up. Buzzing from speakers and working noise of PSU.
• Only half a picture. (+ extract of circuit diagram)
• No functions. Hum in loudspeaker. No LED lit. (20GR105052R PHILIPS repair tip)
• No colour.
• Green screen and at other times no tuning. (extract of circuit diagram attached)
• Limited volume. No channel search.
• Memory loss. (part of circuit diagram displayed)
• Comes on for a short time.
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• Unstable tuning.
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• Intermittent green picture, channels cannot be programmed. (with circuit diagram extract) (service info for PHILIPS -20GR105052R)
• New infra red receiver.
• No picture. No sound. Switching on and off from Standby OK.
• Tuning drifts. only on certain channels.
• Excessive HV. after a while. (20GR105052R PHILIPS repair tip)
• Replacement of TDA7052 with a TDA7052A.
• Hums softly. (with circuit diagram extract)
• Noise in sound. Mute does not function.
• Dead. Low hum.
• Hotel mode.
• Identification coil adjustment.
• No picture (when cold).
• Memory content dropout at positions 4 and 5. (PHILIPS - 20GR105052R information)
• Unable to tune or set volume in Prefix mode.
• No audio.
• White unmodulated raster. Picture missing. (+ extract of circuit diagram)
• Bright picture. Flyback lines. (20GR105052R tips)
• Turns on automatically. No RC or front panel controls.
• No tuning - no channels.
• The removal of leaded diodes. (extract of circuit diagram attached)
• Line output stage does not start up. (+ extract of circuit diagram)
• Cannot be programmed and search does not function. Only limited volume adjustable.
• No audio.
• Secondary main power supply OK except +9V at 5.8V
• No tuning possible, F2 appears on bottom of picture and S1 on top. (20GR105052R tips)
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• Blank raster. No audio. after a while. (picture attached) (20GR105052R tip from PHILIPS)
• Sound goes to max. intermittently and HT varies. (with circuit diagram extract)
• No transmitters to adjust and the sound is not controllable.
• Sometimes when turned on, green screen only with flyback lines, at other times no tuning and channel will not change. (picture attached)
• No operation.
• 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)
• Appliance will not switch on at times, but hums in the power supply section.
• Bright flash on screen and no picture or sound after a few minutes. (with circuit diagram extract)
• Vertical line. on the right half screen. (part of circuit diagram displayed)
• Whistle.
• No OSD. Picture OK .
• Line output transistor TR7528 fails at switch on.
• Vertical vibration in cold condition of set.
• Strongly distorted sound by low volume. (20GR105052R PHILIPS repair tip)
• No picture. TXT OK . (picture attached)
• Standby LED lights up and switches off at power on. Appliance will not start up.
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• Green picture.
• Poor sync. AGC fault.
• No line output.
• Intermittent colour and intermittent dark vertical bar on picture.
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (with circuit diagram extract)
• Set goes accidentally into hotel mode.
• Line output transistor running hot. (picture attached)
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (with circuit diagram extract) (service info for PHILIPS -20GR105052R)
• No audio.
• No switch on. Weak whistling noise from PSU. LED is OFF.
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
• Green screen with flyback line. No picture. OSD OK.
• Automatic fine tuning (AFT) field alignment procedure.
• The TV does not stop during the tuning phase.
• No audio.
• No connection for headphone.
• 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)
• High voltage transistor defective after a while.
• Rolling or jittering picture. (+ extract of circuit diagram)
• Does not stop on stations.
• No tuning. No channel lock. (with circuit diagram extract)
• Picture fails for a short time. (picture attached)
• Colours flicker and disappears.
• No standby, humming and standby LED blinks.
• Excessive brightness.
• Picture only in two bars in upper screen section, the rest is dark. (picture attached)
• Becomes defective immediately after switch on.
• Green picture.
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Stored channels are partially lost.
• Hotel Mode activates by itself. (with circuit diagram extract)
• Search jumps on UHF.
• Store lock on the appliance.
• No start up. No standby. Attempts to start up, but fails.
• Red picture. Flyback lines. (20GR105052R tip from PHILIPS)
• Vertical size varies. intermittently.
• Volume change with great fluctuations in brightness. (picture attached) (20GR105052R PHILIPS repair tip)
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (picture attached) (20GR105052R tip from PHILIPS)
• Tuning drifts. only on certain channels (after a while). (20GR105052R tips)
• Horizontal oscillator adjustment procedure.
• Picture is mostly green with flyback lines after 10 secs from switch on.
• Focus adjustment.
• No colour. (extract of circuit diagram attached)
• Squealing from PSU.
• Right side of picture discoloured.
• Trips. at start-up (intermittently). (part of circuit diagram displayed)
• Reduced horizontal size. (picture attached)
• Wavy picture. on the right.
• No colour.
• No power supply start up in loaded condition (eg. with lamp).
• Programme tuning difficulty, stations shifted on tuning bar. (part of circuit diagram displayed)
• Colour flickers. No colour. after a while. (picture attached)
• No tuning. only on certain channels.
• Picture separating line appears. Whistling.
• Stations won't change. Picture and sound OK. Other functions OK.
• Initial volume level is higher than maximum Hotel mode setting.
• No tuning bar when install button pressed and set not in hotel mode. (with circuit diagram extract)
• No functions. Standby LED flashes. Relay switches to ON.
• Low audio. (extract of circuit diagram attached)
• How to reset microprocessor.
• PSU switches off with load at U95V. (+ extract of circuit diagram)
• Dead. Low frequency noise on sound.