20GR1250 / PHILIPS [TV]

• Enter service mode.
• Intermittently no picture and sound at switch on. Buzz from speaker. (picture attached)
• Comes on for a short time.
• Smeary, washed out picture with bent verticals. (+ extract of circuit diagram)
• Power supply fault finding. (with circuit diagram extract)
• Dead set. Tries to start.
• No switch on. Weak whistling noise from PSU. LED is OFF.
• No audio.
• No picture, sound ok but on turning up A1 control, frame collapse. (part of circuit diagram displayed)
• PSU peeps +95 is ca 0,8v
• Blank raster. OSD OK .
• No audio.
• Line tearing. on lower half screen. (extract of circuit diagram attached) (20GR1250 PHILIPS repair tip)
• Colours flickers and disappears.
• No sound or raster. The 95V HT supply is present at the line output stage but there is no line drive. (part of circuit diagram displayed)
• Random breakdown of line output transistor. (picture attached)
• Defective purity.
• Cannot change tuning or stored settings. (with circuit diagram extract)
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• Whistling from PSU. (+ extract of circuit diagram)
• Picture is poor with rippling on verticals. (with circuit diagram extract)
• Control panel cover.
• No tuning.
• Tuning drifts. (part of circuit diagram displayed)
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• Memory cannot be opened via "rhombus". Stored channels cannot be changed.
• Protection device (thyristor THY6641) is triggered at switch on. (part of circuit diagram displayed)
• No audio.
• Picture appears slowly.
• Search jumps on UHF.
• Green screen and at other times no tuning. (with circuit diagram extract)
• Strongly distorted sound by low volume.
• Vertical oscillator adjustment procedure.
• Poor sync. AGC fault.
• Unable to tune or set volume in Prefix mode.
• Does not start up at once from cold.
• No tuning. only on certain channels.
• No tuning bar when install button pressed and set not in hotel mode. (picture attached) (20GR1250 tip from PHILIPS)
• Intermittently dead. after start-up.
• Becomes defective immediately after switch on.
• Low audio. (picture attached)
• Sometimes when turned on, green screen only with flyback lines, at other times no tuning and channel will not change. (picture attached)
• Picture separating line appears. Whistling.
• No frame or short frame. (picture attached)
• Automatic fine tuning (AFT) field alignment procedure.
• Buzzing from PSU. when cold. (+ extract of circuit diagram)
• Low audio.
• Dark picture. Audio OK .
• Trips. (+ extract of circuit diagram)
• The picture is slightly yellow, flyback lines. Slightly noisy, no own recording possible.
• No picture. Audio OK .
• White balance adjustment.
• Line out of phase. Black band in centre of screen. No colour.
• 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.
• Does not stop on stations.
• Excessive vertical size.
• Sound returns gradually after channel change. (with circuit diagram extract) (20GR1250 tip from PHILIPS)
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• Quick hiccup. (+ extract of circuit diagram)
• Skips channels during 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. (part of circuit diagram displayed)
• Line output stage does not start up. (part of circuit diagram displayed)
• Difficultly in tuning to correct position.
• Difficult to tune programmes, stations shifted on tuning bar. (PHILIPS - 20GR1250 information)
• Appliance does not function with standby light flashing.
• No power supply start up in loaded condition (eg. with lamp).
• Tuning drift, when it is hot the tuning is lost on channel change.
• No SOP supply. (part of circuit diagram displayed)
• No picture, only squeaks for a short time at switch on then no more functions.
• Noise in sound. Mute does not function.
• Right side of picture discoloured.
• How to enter/exit HOTEL mode.
• Tuning drifts. only on certain channels (after a while).
• Hotel mode.
• No function. Standby-LED lights up. Appliance switches on but no picture or sound. (20GR1250 PHILIPS repair tip)
• Intermittent green picture, channels cannot be programmed. (extract of circuit diagram 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. (extract of circuit diagram attached)
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (with circuit diagram extract)
• Programme channel search cannot be called up.
• Sound goes to max. intermittently and HT varies. (+ extract of circuit diagram)
• No function, starts up from standby, then goes out. (20GR1250 tip from PHILIPS)
• Horizontal oscillator adjustment procedure.
• No +9V, line output stage is OK. (+ extract of circuit diagram) (PHILIPS - 20GR1250 information)
• 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.
• Stations won't change. Picture and sound OK. Other functions OK.
• No audio.
• Standby LED lights up and switches off at power on. Appliance will not start up.
• V-centre adjustment procedure.
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• Poor synchronisation. when cold. (picture attached) (service info for PHILIPS -20GR1250)
• Memory loss. (part of circuit diagram displayed)
• No channel search. No OSD. (picture attached)
• Line output stage only starts up for a short time. (extract of circuit diagram attached)
• Vertical collapse. (extract of circuit diagram attached)
• SOPS defective. (with circuit diagram extract)
• Change of C2523.
• Drive for high voltage missing. (+ extract of circuit diagram)
• No function at switch on from standby. Switches to LOCK (hotel) mode. (with circuit diagram extract)
• To put into hotel mode.
• Adjustment of +95V. (with circuit diagram extract)
• Bright picture. Flyback lines.
• Green picture.
• How to de-activate Hotel mode.
• Searches for channels continuously. (part of circuit diagram displayed)
• No functions. Sound buzzes in loudspeaker. (picture attached)
• PAL colour amplitude adjustment procedure.
• No operation. (20GR1250 tip from PHILIPS)
• Intermittent audio and picture. (extract of circuit diagram attached)
• Intermittently dead. (extract of circuit diagram attached)
• No colour and vertical black bar across screen.
• Distorted audio.
• Modification at line transformer position 5530. (part of circuit diagram displayed)
• Volume change with great fluctuations in brightness. (extract of circuit diagram attached)
• How to de-activate volume limiter.
• Change of C2523.
• No colour. (part of circuit diagram displayed)
• Rolling or jittering picture. (part of circuit diagram displayed)
• No audio.
• No start up. No standby. Attempts to start up, but fails.
• Change of C2523.
• Correction to service manual LOT winding.
• Local controls inoperative.
• Right hand side of screen has a line.
• The switched-mode power supply cannot be loaded.
• Intermittently narrow picture, but corrects itself shortly after.
• Identification coil adjustment.
• Stops at start up. (with circuit diagram extract)
• Fizzling sound from speakers at start-up and intermittently picture jagged.
• SIF DET adjustment procedure.
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (+ extract of circuit diagram)
• Set goes accidentally into hotel mode.
• Does not shut down (when cold).
• Tripping. (picture attached)
• Change of C2523.
• Dead. Strange noises from PSU/ line output transformer. (with circuit diagram extract)
• Replacement of surface mounted diode 6637. (part of circuit diagram displayed)
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (+ extract of circuit diagram) (20GR1250 PHILIPS repair tip)
• Reduced vertical size. at top.
• How to switch off Hotel-Mode.
• No functions. Hum in loudspeaker. No LED lit.
• No start-up. Buzzing from speakers and working noise of PSU.
• No picture (when cold).
• Limited volume. No channel search.
• No freeze frame or intermittent freeze frame; no sound. (picture attached)
• New IR receiver.
• Unstable tuning.
• Switches off by itself. after a while. (picture attached)
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• Failures in the power supply. (part of circuit diagram displayed)
• No tuning, no remote volume control. (extract of circuit diagram attached)
• Red picture. Flyback lines.
• Vertical roll. (picture attached)
• To remove store/lock.
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• Whistling. (20GR1250 tip from PHILIPS)
• Buzz in audio. No picture.
• Programs and PP-settings cannot be changed.
• LED flashes once, then gurgles. (with circuit diagram extract)
• Blank or green raster. Flyback lines. Faint picture or normal picture. (picture attached)
• Secondary main power supply OK except +9V at 5.8V
• Line output transistor running hot. (picture attached)
• Line tearing and rope effect.
• Height excessive. Defective linearity. Field blanking. (extract of circuit diagram attached)
• How to de-activate Hotel-Mode.
• No function. Standby LED flashes briefly. (part of circuit diagram displayed)
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (picture attached)
• No functions. after start-up (intermittently). (20GR1250 tip from PHILIPS)
• Dead. Low hum.
• Stuck in hotel mode.
• Wavy picture. on the right.
• Initial volume level is higher than maximum Hotel mode setting.
• Programming unoperational. Limited sound adjustment possible.
• No colour.
• Only half a picture. (extract of circuit diagram attached)
• Slow hiccup (with circuit diagram extract)
• Search jumps on UHF.
• The removal of leaded diodes. (+ extract of circuit diagram)
• Sound varies with picture content.
• Set does not retune or program etc
• Control micro processors. (20GR1250 PHILIPS repair tip)
• Service manual correction. (+ extract of circuit diagram) (20GR1250 PHILIPS repair tip)
• Using a lamp as a load.
• Horizontal white line.
• Lines across top of picture about 8" in first 100 lines. (with circuit diagram extract)
• Settings do not stay in position.
• The tone (sound) tunes well, but the volume cannot be raised. (service info for PHILIPS -20GR1250)
• Colour amplitude and phase adjustment procedure.
• Low 5V to micro chip. (part of circuit diagram displayed)
• Noise in audio.
• New infra red receiver.
• No sound or picture. Low hum from speaker. (picture attached)
• Unstable tuning.
• No functions. when cold.
• Excessive green.
• No switch on. Low noise on sound. (picture attached)
• Blown chopper. (picture attached)
• Memory content dropout at positions 4 and 5.
• Stored channels are partially lost.
• During picture changes sometimes a volume increase (plop) is heard. (picture attached)
• No picture. OSD OK .
• Line down middle of screen. (picture attached)
• Picture shifts. (picture attached)
• No picture. TXT OK . (picture attached)
• No functions. Standby LED flashes. Relay switches to ON.
• Tuning menu can not be called. All other functions OK.
• No HT from chopper circuit. (picture attached)
• Dark picture.
• No start up, just a buzzing noise in speakers. (picture attached) (20GR1250 PHILIPS repair tip)
• No colour.
• Reluctant to start up from cold.
• Picture is mostly green with flyback lines after 10 secs from switch on.
• Colour flickers. No colour. after a while. (with circuit diagram extract)
• No sound. No picture. Faint motorboating noise. (20GR1250 PHILIPS repair tip)
• Field collapse normally with blank picture. (+ extract of circuit diagram)
• Cannot be programmed and search does not function. Only limited volume adjustable.
• Line output stage does not function.
• Whistle.
• 95V available. 9V is only 5.2V. Slight buzzing from loudspeakers.
• Initial volume level is higher than maximum Hotel mode setting.
• Volume varies. depending on picture content. (extract of circuit diagram attached)
• Buzz in audio (intermittently). (extract of circuit diagram attached)
• Unable to retune set or set analogue levels. Store-lock option may be on "Hotel mode".
• Green picture. (with circuit diagram extract) (PHILIPS - 20GR1250 information)
• Trips. at start-up (intermittently). (picture attached)
• Two lines going around. (extract of circuit diagram attached)
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again. (PHILIPS - 20GR1250 information)
• Vertical line. on the right half screen. (extract of circuit diagram attached) (20GR1250 PHILIPS repair tip)
• Won't tune a new channel. Won't activate store function. Picture OK. Sound OK.
• No start up from cold and humming.
• Does not switch on, standby LED OK.
• Description of SMPS. (+ extract of circuit diagram)
• Production change to line drive. (part of circuit diagram displayed)
• Set comes on in store lock mode. (with circuit diagram extract)
• Focus adjustment.
• +9V supply modification. (with circuit diagram extract)
• No voltage from PSU. (+ extract of circuit diagram) (service info for PHILIPS -20GR1250)
• Hums softly. (picture attached)
• Excessive brightness.
• Line transistor 7528 blows within 1 sec. (with circuit diagram extract) (PHILIPS - 20GR1250 information)
• Does not regulate +95V.
• No connection for headphone.
• Standby just pulsing.
• Sound motorboating when cold. (picture attached)
• No start-up. Standby LED flashes .
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (part of circuit diagram displayed)
• Picture shifted to the right. (extract of circuit diagram attached)
• No tuning. (with circuit diagram extract)
• No audio.
• Excessive horizontal size.
• Chopper inoperative. (picture attached)
• Humming, motor noise and other unusual noises. Normal picture.
• The fuse and the bridge diodes in the power supply blow.
• Difficult startup. Rattling sound from line output trafo.
• No picture. (extract of circuit diagram attached)
• Green screen with flyback line. No picture. OSD OK.
• Dead. Only hum from speakers. (with circuit diagram extract)
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (with circuit diagram extract)
• No start-up. intermittently.
• High voltage transistor defective after a while.
• No tuning - no channels.
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• No HV.
• Initial volume level is higher than maximum Hotel mode setting.
• No line output stage. (picture attached)
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• Search jumps on UHF.
• Unregulated power supply. Pulsating picture and surging sound. (with circuit diagram extract)
• Line output transistor becomes warm and in the course of time it becomes defective. (picture attached)
• No colour.
• Programme tuning difficulty. Stations has shifted on tuning bar. (20GR1250 PHILIPS repair tip)
• No tuning. No channel lock. (with circuit diagram extract) (20GR1250 tip from PHILIPS)
• No picture. No sound. Switching on and off from Standby OK.
• 6613 type change. (extract of circuit diagram attached)
• Picture centering has shifted horizontally. No OSD.
• No audio.
• Enable Hotel mode.
• Colours flicker and disappears.
• Modification introduced to +9V supply.
• Reluctant to start from cold (picture attached)
• PSU check.
• LED switches on then off immediately.
• Volume can't be tuned down. No tuning with RC. (picture attached)
• No start-up. intermittently (when cold). (picture attached)
• Green picture with retrace lines. After a few restarts picture OK.
• The TV cannot hold the picture.
• Appliance hums slightly (no speaker) horizontal end stage and power supply transistor are ok. Unfortunately no service instructions available.
• Picture shifted horizontally. (part of circuit diagram displayed)
• After replacement of the line output transistor BUT12, picture with trapezoid effect, BUT12 overheats and goes defective again. (picture attached)
• No colour in OSD.
• Squealing from PSU. (20GR1250 tip from PHILIPS)
• Change of C2523. (PHILIPS - 20GR1250 information)
• Reduced horizontal size. (part of circuit diagram displayed)
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• Slow start-up.
• Slow start up of power supply. (+ extract of circuit diagram)
• No transmitters to adjust and the sound is not controllable.
• Bell filter adjustment procedure.
• Unstable tuning.
• Hazy flickering picture at top. (with circuit diagram extract)
• Switches to standby. (with circuit diagram extract)
• Picture only in two bars in upper screen section, the rest is dark. (picture attached)
• Picture is faint with hanover bars. (extract of circuit diagram attached)
• Excessive HV. after a while.
• Intermittent colour and intermittent dark vertical bar on picture.
• Power supply does not oscillate. (+ extract of circuit diagram)
• 10V on 95V line. (extract of circuit diagram attached)
• No switch on after activating mains switch. Whistling noise. (extract of circuit diagram attached)
• No vertical deflection. (extract of circuit diagram attached)
• No start-up. when cold. (extract of circuit diagram attached)
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (part of circuit diagram displayed)
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• Bright flash on screen. No picture or sound. (+ extract of circuit diagram) (20GR1250 tips)
• Replacement of TDA7052 with a TDA7052A.
• How to switch OFF Hotel-Mode.
• Blank raster. Flyback lines. (extract of circuit diagram attached)
• Occasionally appliance does not switch on from standby. No further functions are possible.
• Processor numbers (changed). (PHILIPS - 20GR1250 information)
• Horizontal hold adjustment procedure.
• How to de-activate Hotel-Mode:
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• Colour sync adjustment procedure.
• How to switch off Hotel-Mode:
• 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)
• Dead due to action of over voltage protection circuit. (service info for PHILIPS -20GR1250)
• Defective IC7103 SV-production. (picture attached)
• Loosing colour during play-back of a video tape. (part of circuit diagram displayed) (PHILIPS - 20GR1250 information)
• Enable Hotel mode. Disable hotel mode.
• No picture. No audio. (+ extract of circuit diagram)
• Does not start. Slight buzzing in loudspeaker.
• Microcomputers and screening plate. (20GR1250 PHILIPS repair tip)
• PSU switches off with load at U95V. (picture attached) (20GR1250 tip from PHILIPS)
• Buzzing sound then switches off.
• No or intermittent start-up. (+ extract of circuit diagram)
• No tuning possible, F2 appears on bottom of picture and S1 on top.
• Replacing the EAROM. (part of circuit diagram displayed)
• Dead. At switch on the stand by LED flashes.
• Tuning drifts. only on certain channels.
• Tuning procedure.
• Sound varies with picture content.
• No regulation. (part of circuit diagram displayed)
• Dead with whistling noise coming from power supply. (part of circuit diagram displayed)
• Line tearing, especially with bright scences. (extract of circuit diagram attached)
• No horizontal synchronisation. (extract of circuit diagram attached)
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (+ extract of circuit diagram) (PHILIPS - 20GR1250 information)
• Turns on automatically. No RC or front panel controls.
• Loud chriping after switch on. It becomes lower after a short time.
• Crackling and popping in sound after a short time. (20GR1250 PHILIPS repair tip)
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (part of circuit diagram displayed)
• No function. When switching on with RC, standby LED lights up. (picture attached)
• No functions. Slow start-up. (picture attached)
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (+ extract of circuit diagram)
• Green picture.
• Intermittent destruction of line o/p transistor. (picture attached)
• Blank raster. No audio. after a while. (with circuit diagram extract)
• No standby, humming and standby LED blinks. (20GR1250 tip from PHILIPS)
• Volume goes to max. No volume control.
• To release hotel mode (child lock).
• How to reset microprocessor.
• No picture. No sound. Purring sound in loudspeaker. (+ extract of circuit diagram)
• No tuning or on screen tuning display.
• Microprocessor screening plate. (with circuit diagram extract)
• Error codes.
• No OSD. Picture OK .
• Connection of a loop system to the TV. (20GR1250 tips)
• Sound varies with picture content.
• Line output stage TS7528 is defective. (part of circuit diagram displayed)
• Buzzing.
• Picture fails for a short time. (with circuit diagram extract)
• Hotel Mode activates by itself. (extract of circuit diagram attached)
• Dead, very slight whistle from PSU. (service info for PHILIPS -20GR1250)
• Display goes to F1 a few seconds after switching the set on.
• To improve performance with prerecorded cassettes. (with circuit diagram extract)
• No line output.
• Picture shifted to the left. intermittently. Line tearing. intermittently. (+ extract of circuit diagram)
• Sound increases intermittently or "pops", especially during bright scenes. (extract of circuit diagram attached)
• Delay RF AGC adjustment procedure.
• Line output transistor TR7528 fails at switch on.
• No line start up; +95 available; +9V is about 4.5V. (+ extract of circuit diagram)
• Vertical size varies. intermittently. (20GR1250 PHILIPS repair tip)
• No voltage from PSU, computer does not work. (picture attached)
• Low frequency noise on sound.
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59)
• Line output transistor fails repeatedly. (part of circuit diagram displayed)
• Dim picture with Hanover bars visible. (part of circuit diagram displayed)
• Picture displays lines and strange foldover effect at centre.
• Appliance is dead with standby LED flashing after a few seconds. (part of circuit diagram displayed)
• After working normally for a while the TV blocks in any position. The functions do not work.
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Intermittent colour.
• White unmodulated raster. Picture missing. (extract of circuit diagram attached)
• Poor reproduction of copy protected tapes. (part of circuit diagram displayed)
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (with circuit diagram extract)
• Initial volume level is higher than maximum hotel mode setting.
• No functions, hum in loudspeakers. (+ extract of circuit diagram)
• +B very high. (picture attached)
• Sound varies with picture content.
• U743 tuner replacement. (picture attached)
• Dead. (part of circuit diagram displayed)
• Green raster. Faint picture. Flyback lines.
• Bright flash on screen and no picture or sound after a few minutes. (with circuit diagram extract)
• Intermittent colour.
• LED does not flash. Slight buzz in appliance. (part of circuit diagram displayed)
• No start-up. (picture attached)
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault. (20GR1250 tips)
• Doesn't store stations correctly.
• CRT types.
• PSU does not start up, if appliance was switched off for a day. Appliance functions after short switch on/off. (picture attached)
• Appliance will not switch on at times, but hums in the power supply section.
• Dim picture with Hanover bars. (service info for PHILIPS -20GR1250)
• Line output transistor replacement.
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (with circuit diagram extract)
• Error messages indicated by front display flashing. (+ extract of circuit diagram)
• Print with linearity coil pos. 5800.
• Intermittent colour.
• "Store" key does not work. (extract of circuit diagram attached)
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off. (20GR1250 tips)
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (part of circuit diagram displayed)
• Initial volume level is higher than maximum Hotel mode setting.
• Colours flickers and disappears.
• Dead. Low level buzz from loudspeaker. (extract of circuit diagram attached)
• Poor synchronisation. (part of circuit diagram displayed)
• Vertical vibration in cold condition of set.
• Colour disappears with VCR-scan (picture search). (with circuit diagram extract)
• Streaks in picture. Picture pulls and rolls intermittently.
• Appliance can not be programmed. Search does not function. Only limited volume control.
• Picture passes out in the centre.
• 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.
• Unstable tuning.
• Skips channels during tuning. only on certain channels.
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (part of circuit diagram displayed)
• Menu rolling. (part of circuit diagram displayed)
• Interference in audio. Interference in picture. (part of circuit diagram displayed) (20GR1250 tip from PHILIPS)
• Programme tuning difficulty, stations shifted on tuning bar. (picture attached)
• Blue picture. Coloured lines. (20GR1250 tips)
• No power with abnormal sound. (part of circuit diagram displayed)
• Store lock on the appliance.
• Dead. Low frequency noise on sound.
• R-Y and B-Y discriminator adjustment procedure. (picture attached)
• 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)
• Stuck in standby. (with circuit diagram extract) (20GR1250 tips)
• No picture and sound. Low hum intermittently, no function.
• The TV does not stop during the tuning phase.