20GR105094R / PHILIPS [TV]

• PSU switches off with load at U95V. (picture attached)
• Hotel mode.
• No audio.
• 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)
• Does not start. Slight buzzing in loudspeaker.
• Occasionally appliance does not switch on from standby. No further functions are possible.
• Stuck in standby. (extract of circuit diagram attached)
• No picture. No audio. (with circuit diagram extract)
• Intermittent channel drift in UHF. Channel search OK. VHF OK. (20GR105094R tips)
• "Store" key does not work. (extract of circuit diagram attached)
• Unstable tuning.
• Description of SMPS. (+ extract of circuit diagram)
• Line out of phase. Black band in centre of screen. No colour.
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• No switch on. Weak whistling noise from PSU. LED is OFF. (20GR105094R tips)
• White unmodulated raster. Picture missing. (part of circuit diagram displayed) (20GR105094R tip from PHILIPS)
• Slow start-up.
• Vertical roll. (extract of circuit diagram attached)
• Picture fails for a short time. (part of circuit diagram displayed)
• No tuning possible, F2 appears on bottom of picture and S1 on top.
• The removal of leaded diodes. (picture attached)
• Quick hiccup. (with circuit diagram extract)
• Dark picture. Audio 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. (part of circuit diagram displayed)
• Dead with whistling noise coming from power supply. (extract of circuit diagram attached)
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
• Enable Hotel mode.
• Dead set. Tries to start.
• Vertical vibration in cold condition of set. (service info for PHILIPS -20GR105094R)
• Hotel Mode activates by itself. (extract of circuit diagram attached)
• To remove store/lock.
• No start up. No standby. Attempts to start up, but fails.
• No SOP supply. (extract of circuit diagram attached)
• Tuning menu can not be called. All other functions OK.
• No audio.
• Loud chriping after switch on. It becomes lower after a short time.
• Intermittently no picture and sound at switch on. Buzz from speaker. (extract of circuit diagram attached)
• Low 5V to micro chip. (extract of circuit diagram attached)
• No audio.
• Reduced vertical size. at top. (PHILIPS - 20GR105094R information)
• Sound varies with picture content.
• No start-up. when cold. (picture attached) (service info for PHILIPS -20GR105094R)
• Becomes defective immediately after switch on.
• Switches to standby. (+ extract of circuit diagram)
• U743 tuner replacement. (with circuit diagram extract)
• Unstable tuning.
• Picture shifted to the left. intermittently. Line tearing. intermittently. (with circuit diagram extract)
• No regulation. (+ extract of circuit diagram)
• Smeary, washed out picture with bent verticals. (+ extract of circuit diagram)
• Focus adjustment.
• Line output stage does not start up. (+ extract of circuit diagram)
• Line down middle of screen. (part of circuit diagram displayed)
• Programme tuning difficulty. Stations has shifted on tuning bar.
• Sound motorboating when cold. (+ extract of circuit diagram)
• Green picture with retrace lines. After a few restarts picture OK. (20GR105094R tip from PHILIPS)
• Cannot be programmed and search does not function. Only limited volume adjustable.
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• Microprocessor screening plate. (picture attached)
• Store lock on the appliance.
• Error codes.
• Low frequency noise on sound.
• No colour in OSD. (service info for PHILIPS -20GR105094R)
• Does not regulate +95V.
• Initial volume level is higher than maximum Hotel mode setting.
• Stations won't change. Picture and sound OK. Other functions OK.
• V-centre adjustment procedure. (PHILIPS - 20GR105094R information)
• Microcomputers and screening plate.
• No start-up. Buzzing from speakers and working noise of PSU.
• Stuck in hotel mode.
• Hums softly. (+ extract of circuit diagram)
• No picture. TXT OK . (picture attached) (20GR105094R PHILIPS repair tip)
• Lines on picture after approx one hour. It consists of a band of bright white lines about two inches wide. (picture attached)
• Set comes on in store lock mode. (part of circuit diagram displayed)
• New IR receiver.
• Line output transistor running hot. (+ extract of circuit diagram)
• Poor synchronisation. (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)
• Local controls inoperative.
• Field collapse normally with blank picture. (part of circuit diagram displayed)
• Delay RF AGC adjustment procedure.
• Vertical oscillator adjustment procedure.
• No audio.
• 10V on 95V line. (+ extract of circuit diagram)
• How to switch OFF Hotel-Mode.
• Green picture.
• R-Y and B-Y discriminator adjustment procedure. (+ extract of circuit diagram)
• Searches for channels continuously. (+ extract of circuit diagram)
• Colours flicker and disappears.
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• Search jumps on UHF.
• Line tearing and rope effect.
• Dark picture.
• Horizontal oscillator adjustment procedure.
• No tuning, no remote volume control. (picture attached)
• Trips. at start-up (intermittently). (with circuit diagram extract)
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (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.
• Power supply fault finding. (with circuit diagram extract)
• Difficult to tune programmes, stations shifted on tuning bar.
• New infra red receiver.
• Horizontal hold adjustment procedure. (20GR105094R PHILIPS repair tip)
• No or intermittent start-up. (extract of circuit diagram attached)
• No tuning or on screen tuning display.
• Bright picture. Flyback lines.
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes. (20GR105094R tips)
• Picture shifted horizontally. (with circuit diagram extract)
• Excessive horizontal size.
• The fuse and the bridge diodes in the power supply blow.
• Blown chopper. (+ extract of circuit diagram)
• Colours flickers and disappears.
• Distorted audio.
• Loosing colour during play-back of a video tape. (picture attached)
• No frame or short frame. (picture attached)
• Low audio. (PHILIPS - 20GR105094R information)
• Set goes accidentally into hotel mode. (PHILIPS - 20GR105094R information)
• No picture and sound. Low hum intermittently, no function.
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (picture attached)
• How to switch off Hotel-Mode.
• Protection device (thyristor THY6641) is triggered at switch on. (part of circuit diagram displayed)
• Slow hiccup (+ extract of circuit diagram)
• No start up, just a buzzing noise in speakers. (part of circuit diagram displayed)
• Change of C2523. (20GR105094R PHILIPS repair tip)
• Memory loss. (extract of circuit diagram attached)
• Excessive HV. after a while.
• Change of C2523.
• Dead, very slight whistle from PSU.
• LED does not flash. Slight buzz in appliance. (part of circuit diagram displayed)
• No start-up. (with circuit diagram extract)
• Rolling or jittering picture. (with circuit diagram extract)
• Hazy flickering picture at top. (picture attached)
• Picture passes out in the centre.
• The tone (sound) tunes well, but the volume cannot be raised.
• Sound returns gradually after channel change. (with circuit diagram extract)
• Appliance can not be programmed. Search does not function. Only limited volume control. (20GR105094R tips)
• PAL colour amplitude adjustment procedure. (PHILIPS - 20GR105094R information)
• Picture displays lines and strange foldover effect at centre.
• How to de-activate volume limiter.
• No HV.
• Turns on automatically. No RC or front panel controls. (20GR105094R PHILIPS repair tip)
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off.
• No tuning - no channels.
• Skips channels during tuning. only on certain channels.
• Sound varies with picture content. (20GR105094R PHILIPS repair tip)
• Power supply does not oscillate. (with circuit diagram extract)
• Comes on in standby. When program button pressed standby lamp blinks then goes off. (20GR105094R PHILIPS repair tip)
• Blank raster. Flyback lines. (picture attached)
• Display goes to F1 a few seconds after switching the set on.
• Unregulated power supply. Pulsating picture and surging sound. (picture attached)
• Reduced horizontal size. (with circuit diagram extract)
• Dead. Low hum. (20GR105094R PHILIPS repair tip)
• Whistle.
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (picture attached) (20GR105094R tips)
• Cannot change tuning or stored settings. (picture attached)
• Tuning drifts. only on certain channels (after a while).
• Programme channel search cannot be called up.
• White balance adjustment.
• Picture is poor with rippling on verticals. (with circuit diagram extract)
• No audio.
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (+ extract of circuit diagram)
• Stops at start up. (with circuit diagram extract)
• No audio.
• Blank raster. No audio. after a while. (picture attached)
• No picture. No sound. Switching on and off from Standby OK.
• Picture is faint with hanover bars. (picture attached) (20GR105094R PHILIPS repair tip)
• No colour. (part of circuit diagram displayed)
• Reluctant to start up from cold.
• Search jumps on UHF.
• Poor reproduction of copy protected tapes. (with circuit diagram extract)
• Strongly distorted sound by low volume.
• Change of C2523.
• Print with linearity coil pos. 5800. (20GR105094R PHILIPS repair tip)
• Settings do not stay in position. (20GR105094R tips)
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (picture attached)
• No voltage from PSU, computer does not work. (extract of circuit diagram attached)
• Dead. Low frequency noise on sound.
• Whistling from PSU. (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)
• During picture changes sometimes a volume increase (plop) is heard. (part of circuit diagram displayed)
• No colour.
• Poor sync. AGC fault.
• Production change to line drive. (with circuit diagram extract)
• Enter service mode.
• Line output transistor replacement.
• Chopper inoperative. (picture attached)
• No functions. after start-up (intermittently).
• Green raster. Faint picture. Flyback lines.
• Difficultly in tuning to correct position.
• Unstable tuning.
• The TV does not stop during the tuning phase. (20GR105094R tips)
• No functions. Standby LED flashes. Relay switches to ON.
• After working normally for a while the TV blocks in any position. The functions do not work.
• SIF DET adjustment procedure.
• Does not start up at once from cold.
• Failures in the power supply. (with circuit diagram extract)
• Reluctant to start from cold (picture attached)
• Green picture. (+ extract of circuit diagram)
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• Whistling.
• Comes on for a short time.
• Blue picture. Coloured lines.
• Adjustment of +95V. (+ extract of circuit diagram) (20GR105094R tips)
• Intermittent green picture, channels cannot be programmed. (picture attached) (service info for PHILIPS -20GR105094R)
• Intermittent colour and intermittent dark vertical bar on picture.
• Using a lamp as a load.
• How to switch off Hotel-Mode:
• Volume change with great fluctuations in brightness. (part of circuit diagram displayed)
• Control panel cover.
• Interference in audio. Interference in picture. (picture attached)
• Green picture.
• Programs and PP-settings cannot be changed.
• +B very high. (with circuit diagram extract)
• Picture separating line appears. Whistling.
• Vertical line. on the right half screen. (with circuit diagram extract)
• Intermittent colour.
• How to de-activate Hotel mode.
• Noise in audio. (20GR105094R tip from PHILIPS)
• Sound varies with picture content.
• Height excessive. Defective linearity. Field blanking. (+ extract of circuit diagram)
• No tuning. No channel lock. (extract of circuit diagram attached)
• To release hotel mode (child lock). (PHILIPS - 20GR105094R information)
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (picture attached)
• No colour and vertical black bar across screen.
• Standby just pulsing. (PHILIPS - 20GR105094R information)
• Tuning procedure.
• Crackling and popping in sound after a short time.
• Enable Hotel mode. Disable hotel mode.
• To put into hotel mode.
• Initial volume level is higher than maximum Hotel mode setting.
• Noise in sound. Mute does not function.
• Service manual correction. (with circuit diagram extract)
• Buzzing sound then switches off.
• Dead due to action of over voltage protection circuit.
• Standby LED lights up and switches off at power on. Appliance will not start up. (PHILIPS - 20GR105094R information)
• Menu rolling. (picture attached)
• No start-up. Standby LED flashes .
• Modification introduced to +9V supply.
• Colour flickers. No colour. after a while. (with circuit diagram extract)
• Colour disappears with VCR-scan (picture search). (with circuit diagram extract) (20GR105094R PHILIPS repair tip)
• Buzz in audio. No picture.
• No line output.
• Horizontal white line.
• Humming, motor noise and other unusual noises. Normal picture.
• Change of C2523.
• Green screen and at other times no tuning. (extract of circuit diagram attached)
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• PSU check.
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (part of circuit diagram displayed)
• No connection for headphone.
• No picture (when cold).
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• No HT from chopper circuit. (+ extract of circuit diagram)
• Poor synchronisation. when cold. (with circuit diagram extract) (PHILIPS - 20GR105094R information)
• No colour.
• Intermittent colour.
• Unable to tune or set volume in Prefix mode.
• Intermittently dead. after start-up.
• Lines across top of picture about 8" in first 100 lines. (part of circuit diagram displayed) (20GR105094R PHILIPS repair tip)
• No start up from cold and humming.
• No function, starts up from standby, then goes out.
• PSU does not start up, if appliance was switched off for a day. Appliance functions after short switch on/off. (with circuit diagram extract)
• Set does not retune or program etc
• Replacement of TDA7052 with a TDA7052A. (service info for PHILIPS -20GR105094R)
• Squealing from PSU.
• No power supply start up in loaded condition (eg. with lamp).
• Picture appears slowly.
• Memory content dropout at positions 4 and 5.
• Buzzing. (20GR105094R tip from PHILIPS)
• Dim picture with Hanover bars visible. (with circuit diagram extract)
• Difficult startup. Rattling sound from line output trafo.
• Tuning drift, when it is hot the tuning is lost on channel change.
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (extract of circuit diagram attached)
• Two lines going around. (+ extract of circuit diagram)
• No function at switch on from standby. Switches to LOCK (hotel) mode. (with circuit diagram extract)
• Volume varies. depending on picture content. (part of circuit diagram displayed)
• Intermittent colour.
• Doesn't store stations correctly. (service info for PHILIPS -20GR105094R)
• Sound varies with picture content.
• Picture shifts. (+ extract of circuit diagram)
• No tuning. (+ extract of circuit diagram)
• To improve performance with prerecorded cassettes. (with circuit diagram extract)
• No functions. when cold.
• Dead. Low level buzz from loudspeaker. (with circuit diagram extract) (20GR105094R tip from PHILIPS)
• Colours flickers and disappears.
• Line transistor 7528 blows within 1 sec. (with circuit diagram extract)
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• Line tearing, especially with bright scences. (with circuit diagram extract)
• Line output transistor TR7528 fails at switch on.
• Stored channels are partially lost.
• Vertical size varies. intermittently.
• Line output stage TS7528 is defective. (part of circuit diagram displayed)
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• No tuning.
• 6613 type change. (extract of circuit diagram attached)
• Programme tuning difficulty, stations shifted on tuning bar. (with circuit diagram extract)
• Error messages indicated by front display flashing. (picture attached)
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• Intermittently narrow picture, but corrects itself shortly after.
• How to de-activate Hotel-Mode:
• How to reset microprocessor.
• No power with abnormal sound. (picture attached)
• No freeze frame or intermittent freeze frame; no sound. (extract of circuit diagram attached)
• No vertical deflection. (+ extract of circuit diagram) (PHILIPS - 20GR105094R information)
• The TV cannot hold the picture.
• Identification coil adjustment.
• Programming unoperational. Limited sound adjustment possible.
• No functions. Sound buzzes in loudspeaker. (+ extract of circuit diagram)
• LED switches on then off immediately.
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
• No operation.
• Buzzing from PSU. when cold. (with circuit diagram extract)
• Replacing the EAROM. (picture attached)
• Sound goes to max. intermittently and HT varies. (with circuit diagram extract)
• LED flashes once, then gurgles. (with circuit diagram extract)
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (picture attached)
• No picture. (extract of circuit diagram attached)
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (part of circuit diagram displayed)
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (part of circuit diagram displayed)
• Tripping. (extract of circuit diagram attached)
• Fizzling sound from speakers at start-up and intermittently picture jagged.
• Switches off by itself. after a while. (picture attached)
• Defective purity.
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• Right side of picture discoloured.
• Does not stop on stations.
• Defective IC7103 SV-production. (extract of circuit diagram attached)
• No functions. Hum in loudspeaker. No LED lit.
• Random breakdown of line output transistor. (with circuit diagram extract)
• Secondary main power supply OK except +9V at 5.8V
• Excessive brightness.
• Line output stage only starts up for a short time. (extract of circuit diagram attached)
• Dead. At switch on the stand by LED flashes.
• No function. Standby LED flashes briefly. (with circuit diagram extract)
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault.
• Does not shut down (when cold).
• No picture. Audio OK .
• Automatic fine tuning (AFT) field alignment procedure.
• Sound increases intermittently or "pops", especially during bright scenes. (+ extract of circuit diagram)
• Green screen with flyback line. No picture. OSD OK.
• Only half a picture. (extract of circuit diagram attached)
• Wavy picture. on the right.
• Sometimes when turned on, green screen only with flyback lines, at other times no tuning and channel will not change. (part of circuit diagram displayed)
• Modification at line transformer position 5530. (picture attached)
• Colour amplitude and phase adjustment procedure.
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (picture attached)
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (extract of circuit diagram attached)
• No sound or picture. Low hum from speaker. (+ extract of circuit diagram)
• Picture only in two bars in upper screen section, the rest is dark. (extract of circuit diagram attached) (20GR105094R tips)
• No functions. Slow start-up. (+ extract of circuit diagram)
• No OSD. Picture OK .
• Line output transistor fails repeatedly. (extract of circuit diagram attached)
• Picture shifted to the right. (with circuit diagram extract)
• Right hand side of screen has a line.
• Trips. (picture attached) (20GR105094R tip from PHILIPS)
• Bell filter adjustment procedure.
• No picture, sound ok but on turning up A1 control, frame collapse. (+ extract of circuit diagram)
• Volume can't be tuned down. No tuning with RC. (with circuit diagram extract)
• Appliance is dead with standby LED flashing after a few seconds. (part of circuit diagram displayed)
• Intermittent destruction of line o/p transistor. (picture attached)
• No switch on. Low noise on sound. (extract of circuit diagram attached)
• Change of C2523.
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• Replacement of surface mounted diode 6637. (picture attached)
• 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.
• Initial volume level is higher than maximum hotel mode setting.
• Processor numbers (changed). (PHILIPS - 20GR105094R information)
• No voltage from PSU. (with circuit diagram extract)
• No horizontal synchronisation. (with circuit diagram extract)
• Dead. (picture attached)
• SOPS defective. (+ extract of circuit diagram)
• No sound. No picture. Faint motorboating noise.
• Connection of a loop system to the TV.
• Dead. Only hum from speakers. (+ extract of circuit diagram)
• Streaks in picture. Picture pulls and rolls intermittently.
• Tuning drifts. (part of circuit diagram displayed)
• Excessive green.
• Does not switch on, standby LED OK.
• Appliance does not function with standby light flashing.
• Bright flash on screen. No picture or sound. (part of circuit diagram displayed)
• Skips channels during tuning. (extract of circuit diagram attached)
• Vertical collapse. (picture attached)
• Volume goes to max. No volume control.
• No colour.
• No switch on after activating mains switch. Whistling noise. (picture attached)
• Low audio. (with circuit diagram extract)
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• Line output stage does not function.
• How to enter/exit HOTEL mode.
• No tuning bar when install button pressed and set not in hotel mode. (with circuit diagram extract) (PHILIPS - 20GR105094R information)
• Red picture. Flyback lines.
• No start-up. intermittently (when cold). (part of circuit diagram displayed)
• Line tearing. on lower half screen. (with circuit diagram extract)
• No standby, humming and standby LED blinks.
• Initial volume level is higher than maximum Hotel mode setting.
• No line start up; +95 available; +9V is about 4.5V. (extract of circuit diagram attached)
• No function. When switching on with RC, standby LED lights up. (extract of circuit diagram attached)
• No tuning. only on certain channels.
• Buzz in audio (intermittently). (with circuit diagram extract)
• Blank or green raster. Flyback lines. Faint picture or normal picture. (part of circuit diagram displayed)
• No transmitters to adjust and the sound is not controllable.
• Picture is mostly green with flyback lines after 10 secs from switch on.
• High voltage transistor defective after a while.
• Dead. Strange noises from PSU/ line output transformer. (picture attached)
• How to de-activate Hotel-Mode.
• Line output transistor becomes warm and in the course of time it becomes defective. (picture attached)
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• No picture. OSD OK .
• No line output stage. (with circuit diagram extract) (20GR105094R tip from PHILIPS)
• Blank raster. OSD OK .
• Search jumps on UHF.
• Dim picture with Hanover bars.
• Drive for high voltage missing. (with circuit diagram extract)
• No audio.
• 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.
• Intermittent audio and picture. (picture attached)
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (part of circuit diagram displayed)
• No picture. No sound. Purring sound in loudspeaker. (extract of circuit diagram attached)
• Limited volume. No channel search.
• No start-up. intermittently.
• Picture centering has shifted horizontally. No OSD.
• Initial volume level is higher than maximum Hotel mode setting.
• +9V supply modification. (+ extract of circuit diagram)
• No functions, hum in loudspeakers. (+ extract of circuit diagram)
• Excessive vertical size.
• Bright flash on screen and no picture or sound after a few minutes. (extract of circuit diagram attached)
• Tuning drifts. only on certain channels.
• No channel search. No OSD. (extract of circuit diagram attached)
• No +9V, line output stage is OK. (picture attached)
• 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)
• Appliance will not switch on at times, but hums in the power supply section. (20GR105094R tip from PHILIPS)
• Slow start up of power supply. (part of circuit diagram displayed)
• The switched-mode power supply cannot be loaded.
• CRT types. (PHILIPS - 20GR105094R information)
• PSU peeps +95 is ca 0,8v
• Control micro processors.
• Colour sync adjustment procedure.
• Intermittently dead. (extract of circuit diagram attached)
• Correction to service manual LOT winding.
• Unstable tuning.