D14GP4 / TASHIKO [TV]

• Picture appears slowly.
• 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)
• No start up. No standby. Attempts to start up, but fails.
• Smeary, washed out picture with bent verticals. (part of circuit diagram displayed)
• Tuning drifts. only on certain channels.
• No transmitters to adjust and the sound is not controllable.
• Rolling or jittering picture. (+ extract of circuit diagram)
• PSU check.
• Blown chopper. (part of circuit diagram displayed)
• Noise in sound. Mute does not function.
• Streaks in picture. Picture pulls and rolls intermittently. (TASHIKO - D14GP4 information)
• Green screen with flyback line. No picture. OSD OK.
• Error codes.
• Picture is mostly green with flyback lines after 10 secs from switch on. (D14GP4 tip from TASHIKO)
• Power supply does not oscillate. (+ extract of circuit diagram)
• Microprocessor screening plate. (extract of circuit diagram attached)
• Right hand side of screen has a line.
• Tuning menu can not be called. All other functions OK.
• After working normally for a while the TV blocks in any position. The functions do not work.
• Two lines going around. (picture attached)
• No voltage from PSU, computer does not work. (+ extract of circuit diagram)
• Sound returns gradually after channel change. (picture attached)
• Does not switch on. LED is lit in standby. If appliance is switched on with RC, LED switches off.
• New infra red receiver.
• No function. When switching on with RC, standby LED lights up. (with circuit diagram extract)
• No SOP supply. (with circuit diagram extract)
• Enable Hotel mode.
• Picture is faint with hanover bars. (with circuit diagram extract)
• Right side of picture discoloured.
• Line output transistor running hot. (+ extract of circuit diagram)
• No functions, hum in loudspeakers. (picture attached)
• No OSD. Picture OK .
• Reduced horizontal size. (+ extract of circuit diagram)
• Green picture with retrace lines. After a few restarts picture OK.
• Chopper inoperative. (picture attached)
• Cannot change tuning or stored settings. (extract of circuit diagram attached)
• During picture changes sometimes a volume increase (plop) is heard. (picture attached)
• Vertical line. on the right half screen. (picture attached)
• Difficult startup. Rattling sound from line output trafo.
• No tuning. Impossible to change analog control adjustments (brightness, sound, etc.). (picture attached)
• No function. Standby LED flashes briefly. (+ extract of circuit diagram)
• How to reset microprocessor.
• Appliance does not function with standby light flashing.
• Excessive brightness.
• Dead. Low hum.
• No functions. after start-up (intermittently).
• Picture shifted to the right. (extract of circuit diagram attached)
• Line output stage only starts up for a short time. (with circuit diagram extract)
• No picture. No sound. Purring sound in loudspeaker. (picture attached)
• Intermittent channel drift in UHF. Channel search OK. VHF OK.
• Vertical size varies. intermittently. (D14GP4 tips)
• Memory loss. (+ extract of circuit diagram)
• Vertical collapse. (+ extract of circuit diagram)
• Hazy flickering picture at top. (part of circuit diagram displayed)
• No colour and vertical black bar across screen.
• Occasionally appliance does not switch on from standby. No further functions are possible.
• No switch on. Weak whistling noise from PSU. LED is OFF.
• Loud chriping after switch on. It becomes lower after a short time.
• No start-up. Standby LED flashes .
• Dark picture.
• Line output stage does not start up. (picture attached)
• Print with linearity coil pos. 5800.
• Lines across top of picture about 8" in first 100 lines. (+ extract of circuit diagram)
• White screen with flyback lines. Excessive brightness which increases until PSU switches to protection mode. (with circuit diagram extract)
• Standby LED lights up and switches off at power on. Appliance will not start up.
• Trips. (part of circuit diagram displayed) (D14GP4 tips)
• Does not start up. Light buzz from loudspeaker. Standby LED produces one brief blink.
• Buzzing from PSU. when cold. (picture attached)
• No function at switch on from standby. Switches to LOCK (hotel) mode. (+ extract of circuit diagram)
• LED does not flash. Slight buzz in appliance. (part of circuit diagram displayed)
• 6613 type change. (part of circuit diagram displayed)
• Picture passes out in the centre.
• No +9V, line output stage is OK. (+ extract of circuit diagram)
• Hums softly. (+ extract of circuit diagram)
• No channel search. No OSD. (+ extract of circuit diagram)
• Green screen with flyback lines. Green oscillations. Noise as if HV leaky on picture tube base. (with circuit diagram extract) (service info for TASHIKO -D14GP4)
• Line tearing, especially with bright scences. (+ extract of circuit diagram)
• No colour in OSD. (D14GP4 TASHIKO repair tip)
• Error messages indicated by front display flashing. (picture attached)
• Vertical amplitude cannot be fully adjusted, TXT lines can be seen. (picture attached)
• Line output stage TS7528 is defective. (extract of circuit diagram attached)
• Service manual correction. (with circuit diagram extract)
• Will not tune, drifts, colour disappears or interference on a certain channel. (e.g. channel 5 and 59) (D14GP4 tip from TASHIKO)
• Does not stop on stations.
• Programme tuning difficulty, stations shifted on tuning bar. (picture attached)
• To remove store/lock.
• Picture fails for a short time. (with circuit diagram extract)
• Failures in the power supply. (part of circuit diagram displayed)
• No tuning, no remote volume control. (picture attached)
• Buzz in audio. No picture.
• The switched-mode power supply cannot be loaded.
• Blue picture. Coloured lines.
• Intermittently dead. (extract of circuit diagram attached)
• Vertical roll. (extract of circuit diagram attached)
• Stuck in standby. (extract of circuit diagram attached) (D14GP4 TASHIKO repair tip)
• 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 functions. Standby LED flashes. Relay switches to ON.
• No picture. OSD OK .
• Modification at line transformer position 5530. (picture attached)
• No tuning possible, F2 appears on bottom of picture and S1 on top.
• Dim picture with Hanover bars visible. (extract of circuit diagram attached)
• Buzzing sound then switches off.
• Tuning drift, when it is hot the tuning is lost on channel change.
• Defective purity.
• No start-up. (part of circuit diagram displayed)
• Programme channel search cannot be called up.
• No line start up; +95 available; +9V is about 4.5V. (picture attached)
• Colour flickers. No colour. after a while. (part of circuit diagram displayed)
• Protection device (thyristor THY6641) is triggered at switch on. (part of circuit diagram displayed)
• No standby, humming and standby LED blinks.
• Hotel mode.
• No picture. TXT OK . (with circuit diagram extract)
• Unregulated power supply. Pulsating picture and surging sound. (part of circuit diagram displayed)
• Dead with whistling noise coming from power supply. (part of circuit diagram displayed)
• Only some programs with snowy picture can be tuned and on band 1 missing some programs. (part of circuit diagram displayed)
• Blank raster. OSD OK . (D14GP4 tips)
• No function, starts up from standby, then goes out.
• Loosing colour during play-back of a video tape. (with circuit diagram extract)
• +9V supply modification. (with circuit diagram extract)
• Drive for high voltage missing. (extract of circuit diagram attached)
• Settings do not stay in position.
• U743 tuner replacement. (with circuit diagram extract)
• Sound goes to max. intermittently and HT varies. (with circuit diagram extract)
• Stops working every 2 or 3 hrs. Only starts again after switching off and on again.
• Intermittently dead. after start-up.
• No picture, sound ok but on turning up A1 control, frame collapse. (with circuit diagram extract)
• Stops at start up. (part of circuit diagram displayed)
• No HT from chopper circuit. (part of circuit diagram displayed)
• Bright flash on screen and no picture or sound after a few minutes. (+ extract of circuit diagram)
• Field foldover at switch on from cold. Effect disappears when appliance warms up. (part of circuit diagram displayed)
• Correction to service manual LOT winding.
• No power supply start up in loaded condition (eg. with lamp).
• Tuning drifts. only on certain channels (after a while).
• Microcomputers and screening plate.
• Becomes defective immediately after switch on.
• 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)
• Height excessive. Defective linearity. Field blanking. (with circuit diagram extract) (TASHIKO - D14GP4 information)
• Adjustment of +95V. (picture attached)
• Picture centering has shifted horizontally. No OSD.
• Dead. Only standby-LED works. Responds to TURN ON command, but no image and no sound.
• Humming, motor noise and other unusual noises. Normal picture.
• No tuning bar when install button pressed and set not in hotel mode. (+ extract of circuit diagram)
• No picture. No sound. Switching on and off from Standby OK.
• No start up, just a buzzing noise in speakers. (picture attached)
• The tone (sound) tunes well, but the volume cannot be raised.
• Comes on in standby. When program button pressed standby lamp blinks then goes off.
• Programs and PP-settings cannot be changed.
• No functions. when cold.
• Local controls inoperative.
• Green picture. after warm-up. Lines in picture. after warm-up. Does not change channels.
• Picture displays lines and strange foldover effect at centre.
• No horizontal synchronisation. (extract of circuit diagram attached)
• After switching on the CTV "EXT...1.2.3..." appears on the screen.
• Dim picture with Hanover bars.
• Switches off by itself. after a while. (with circuit diagram extract)
• New IR receiver.
• No line output.
• Hotel Mode activates by itself. (+ extract of circuit diagram)
• No sound or picture. Low hum from speaker. (extract of circuit diagram attached)
• 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)
• Comes on for a short time.
• Picture only in two bars in upper screen section, the rest is dark. (extract of circuit diagram attached)
• Field collapse normally with blank picture. (with circuit diagram extract)
• Intermittent colour.
• SOPS defective. (picture attached)
• Line output transistor TR7528 fails at switch on.
• No tuning. (picture attached)
• Blank or green raster. Flyback lines. Faint picture or normal picture. (+ extract of circuit diagram)
• Interference in audio. Interference in picture. (picture attached)
• To improve performance with prerecorded cassettes. (extract of circuit diagram attached)
• Picture shifted to the left. intermittently. Line tearing. intermittently. (+ extract of circuit diagram)
• Spurious nonsense OSG. Goes to standby after 0.5-2hrs. Loss of tuning.
• Horizontal white line.
• Bright picture. Flyback lines.
• No HV. (TASHIKO - D14GP4 information)
• No functions. Slow start-up. (with circuit diagram extract)
• Noise in audio.
• No functions. Sound buzzes in loudspeaker. (extract of circuit diagram attached)
• Replacement of surface mounted diode 6637. (+ extract of circuit diagram)
• Buzz in audio (intermittently). (with circuit diagram extract)
• Intermittently no picture and sound at switch on. Buzz from speaker. (picture attached)
• Line output stage does not function. (D14GP4 tips)
• Blank raster. No audio. after a while. (extract of circuit diagram attached)
• No picture and sound intermittently after switch-on. Buzz sound from speakers. (part of circuit diagram displayed)
• Dead. Only hum from speakers. (extract of circuit diagram attached)
• Programming unoperational. Limited sound adjustment possible.
• Switches to standby. (picture attached)
• Trips. at start-up (intermittently). (picture attached)
• Power supply fault finding. (extract of circuit diagram attached)
• Picture shifts. (extract of circuit diagram attached)
• Cannot be programmed and search does not function. Only limited volume adjustable.
• Line tearing. on lower half screen. (with circuit diagram extract)
• Set goes accidentally into hotel mode.
• Dead. Low level buzz from loudspeaker. (extract of circuit diagram attached)
• Standby just pulsing. (D14GP4 TASHIKO repair tip)
• Green screen and at other times no tuning. (+ extract of circuit diagram)
• Turns on automatically. No RC or front panel controls.
• After operating for one hour it is no longer possible to switch over programmes not even from the front panel. Appliance must be switched on and off then it is possible to change channels.
• No tuning. only on certain channels.
• Intermittent audio and picture. (with circuit diagram extract)
• No line output stage. (picture attached) (TASHIKO - D14GP4 information)
• Line transistor 7528 blows within 1 sec. (picture attached)
• Description of SMPS. (picture attached)
• Very slight vertical foldover with interferences similar to EHT arcing, especially on very white scenes.
• Tuning drifts. (extract of circuit diagram 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)
• Enter service mode.
• No function. Standby-LED lights up. Appliance switches on but no picture or sound.
• Dead, very slight whistle from PSU.
• 10V on 95V line. (+ extract of circuit diagram)
• Line output transistor fails repeatedly. (part of circuit diagram displayed)
• Poor sound, cannot be adjusted louder. When adjusting, sound cuts out. (+ extract of circuit diagram) (D14GP4 TASHIKO repair tip)
• No picture and sound. Low hum intermittently, no function.
• Control micro processors.
• Bright flash on screen. No picture or sound. (extract of circuit diagram attached)
• No colour. (part of circuit diagram displayed)
• Set comes on in store lock mode. (with circuit diagram extract)
• Does not regulate +95V.
• Slow start-up.
• No operation.
• +B very high. (part of circuit diagram displayed) (TASHIKO - D14GP4 information)
• No start-up. when cold. (with circuit diagram extract)
• Skips channels during tuning. only on certain channels.
• Dead. Strange noises from PSU/ line output transformer. (extract of circuit diagram attached)
• Replacing the EAROM. (part of circuit diagram displayed)
• Picture is poor with rippling on verticals. (part of circuit diagram displayed)
• No tuning. No channel lock. (with circuit diagram extract) (TASHIKO - D14GP4 information)
• No picture. No audio. (+ extract of circuit diagram)
• Volume can't be tuned down. No tuning with RC. (+ extract of circuit diagram)
• Dark picture. Audio OK .
• Low 5V to micro chip. (picture attached) (service info for TASHIKO -D14GP4)
• Appliance can not be programmed. Search does not function. Only limited volume control. (D14GP4 tip from TASHIKO)
• The TV cannot hold the picture. (TASHIKO - D14GP4 information)
• The picture is slightly yellow, flyback lines. Slightly noisy, no own recording possible.
• Slow start up of power supply. (extract of circuit diagram attached)
• No picture or sound but RCU works correctly. LED flashes when the handset is tried. (+ extract of circuit diagram)
• Defective IC7103 SV-production. (with circuit diagram extract)
• White unmodulated raster. Picture missing. (+ extract of circuit diagram)
• Green raster. Faint picture. Flyback lines.
• Does not switch on, standby LED OK.
• Does not start. Slight buzzing in loudspeaker.
• Reluctant to start up from cold.
• No start-up. intermittently (when cold). (extract of circuit diagram attached)
• PSU switches off with load at U95V. (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)
• Excessive HV. after a while.
• Dead. Power LED is OFF (ON in standby). Hissing from PSU.
• Line chirps intermittently. Appliance does not start. Only hum from loudspeakers.
• Volume varies. depending on picture content. (extract of circuit diagram attached)
• Dead set. Tries to start.
• Green picture. (extract of circuit diagram attached)
• Intermittent colour and intermittent dark vertical bar on picture. (service info for TASHIKO -D14GP4)
• Quick hiccup. (part of circuit diagram displayed)
• No voltage from PSU. (part of circuit diagram displayed)
• Whistling from PSU. (picture attached)
• Does not shut down (when cold).
• Low audio. (+ extract of circuit diagram)
• Frame has shifted sideways. Appliance whistles and does not oscillate correctly. (picture attached)
• Whistle.
• Stuck in hotel mode.
• Green picture after few hours, intermittently fault disappears for short while when switching from a station to another. Strange characters in OSD.
• No picture. (with circuit diagram extract)
• Squealing from PSU.
• No regulation. (extract of circuit diagram attached)
• High voltage transistor defective after a while.
• Slight foldover at upper part of picture if appliance is switched on when cold. Fault disappears after few minutes. (extract of circuit diagram attached)
• Random breakdown of line output transistor. (picture attached)
• Reluctant to start from cold (extract of circuit diagram attached)
• Skips channels during tuning. (+ extract of circuit diagram)
• No freeze frame or intermittent freeze frame; no sound. (part of circuit diagram displayed) (service info for TASHIKO -D14GP4)
• Line output transistor becomes warm and in the course of time it becomes defective. (picture attached)
• No power with abnormal sound. (+ extract of circuit diagram)
• Dead due to action of over voltage protection circuit.
• Set does not retune or program etc
• Production change to line drive. (part of circuit diagram displayed)
• Intermittent green picture, channels cannot be programmed. (with circuit diagram extract)
• Appliance is dead with standby LED flashing after a few seconds. (+ extract of circuit diagram)
• Vertical vibration in cold condition of set.
• No vertical deflection. (part of circuit diagram displayed)
• The removal of leaded diodes. (+ extract of circuit diagram)
• Reduced vertical size. at top.
• Dead. Low frequency noise on sound.
• No frame or short frame. (extract of circuit diagram attached)
• Blank raster. Flyback lines. (+ extract of circuit diagram)
• Stored channels drift off tune briefly after switch on. Crackle in sound.
• Display goes to F1 a few seconds after switching the set on.
• Intermittent destruction of line o/p transistor. (picture 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 attached)
• Colour disappears with VCR-scan (picture search). (extract of circuit diagram attached)
• Set dead with just 5V on the 95V line. Standby LED is on but set won't start. (extract of circuit diagram attached)
• Slow hiccup (extract of circuit diagram attached) (D14GP4 tip from TASHIKO)
• The fuse and the bridge diodes in the power supply blow.
• Line out of phase. Black band in centre of screen. No colour.
• Searches for channels continuously. (part of circuit diagram displayed) (TASHIKO - D14GP4 information)
• Enable Hotel mode. Disable hotel mode.
• No sound. Picture OK. After a short time TV stops. High frequency noise from PSU. (with circuit diagram extract)
• Store lock on the appliance.
• Lines on picture after approx one hour. It consists of a band of bright white lines about two inches wide. (with circuit diagram extract)
• Menu rolling. (part of circuit diagram displayed)
• No picture (when cold).
• Tripping. (extract of circuit diagram attached)
• Fizzling sound from speakers at start-up and intermittently picture jagged.
• Doesn't tune stations correctly. When cold, crossed lines on low UHF channels. (+ extract of circuit diagram)
• Red picture. Flyback lines.
• No picture, only squeaks for a short time at switch on then no more functions.
• Poor synchronisation. (with circuit diagram extract)
• Connection of a loop system to the TV.
• No picture. Audio OK .
• No switch on. Low noise on sound. (picture attached)
• Line down middle of screen. (+ extract of circuit diagram)
• Picture separating line appears. Whistling.
• Line tearing and rope effect.
• 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)
• Dead. (+ extract of circuit diagram)
• Poor synchronisation. when cold. (part of circuit diagram displayed)
• Poor reproduction of copy protected tapes. (with circuit diagram extract)
• Stations won't change. Picture and sound OK. Other functions OK.
• Picture shifted horizontally. (extract of circuit diagram attached)
• Wavy picture. on the right. (D14GP4 TASHIKO repair tip)
• CRT types.
• No start up from cold and humming.
• Memory content dropout at positions 4 and 5.
• Dead. At switch on the stand by LED flashes.
• Excessive vertical size.
• No start-up. intermittently.
• Does not start up at once from cold.
• No or intermittent start-up. (picture attached)
• Sound increases intermittently or "pops", especially during bright scenes. (with circuit diagram extract)
• Volume change with great fluctuations in brightness. (extract of circuit diagram attached)
• No switch on after activating mains switch. Whistling noise. (part of circuit diagram displayed) (D14GP4 tip from TASHIKO)
• Appliance will not switch on at times, but hums in the power supply section.
• LED flashes once, then gurgles. (+ extract of circuit diagram)
• Set won't tune to high frequency channels and lower frequency channels appear to be higher. (extract of circuit diagram attached)
• Secondary main power supply OK except +9V at 5.8V
• No start-up. Buzzing from speakers and working noise of PSU.
• Intermittently narrow picture, but corrects itself shortly after. (D14GP4 tip from TASHIKO)
• Excessive horizontal size.
• "Store" key does not work. (with circuit diagram extract)
• No function. Motorboating from PSU. TV starts up randomly. Intermittent fault.
• Only half a picture. (extract of circuit diagram attached) (D14GP4 TASHIKO repair tip)