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Resultados 81883

MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV9PT20FLAGGING AT TOP ON TAPES, R222 CHANGED VALUE Flagging at top of CRT when playing back tapes on a VCR. Found VCC on IC201/pin 30 was very low.
SonyKV32XBR96SINTERMITTENT SHUT DOWN, REPLACE T503 HDT The unit would intermittently shut down. The problem was caused by T503/horiz drive transformer. One of the legs on the primary side came loose and was making intermittent connection. Replacement resolved problem. -HQ
SonyKV32XBR90STHIN YELLOW LINE (V) IN THE MIDDLE OF PIX, COMB FILTER Thin Yellow line in middle of picture. Adjusted focus andscreen controls. CRT checked ok.
SonyKV32XBR36DEAD SET, T501 Set would turn on make an arcing noise and shut off. Had tobe unplugged from outlet before it could be turned on again. All B+lines fed from G board checked good. No shorted or leaky componentsfound with ohmeter test.
SonyKV32V16VERTICAL JITTERS, RE-DRESSED LEAD WIRES Vertical jitters, pix jumps.
SonyKV32V16NO POWER, IC101 No power, unit dead. Standby and reset 5 volts ok.
SonyKV27V15POWER BUT NO PICTURE, REPLACE R034 Power on, but no Video/Audio, timer LED is blinking, no OSD. All DC voltages are ok, but no vertical drive and no video, chroma or audio on set.
SonyKV27TS36INCORRECT PART NUMBER OF D BOARD, NPC SUBSITITUTION Servicer ordered replacement board A1346129A for KV-27TS36, but it was National Back order. NPC shipped A1346192A(KV27V10) for replacement. However, unit does not work. They found 5V line is causing this. -HQ COMMENTS:
SonyKV20VM20NO RECEPTION CABLE CONNECTOR (JACK) BROKEN Customer reported TV had snowy picture. Found F connectorjack turned and was loose. Analysis of set found F plug defective.No continuity between pin and socket connection, inside F plug . Servicemanual exploded view pg 139, 14-2 showed F plug as pa
SonyKV20M10VERTICAL JUMPS, REPLACED TUNER Vertical jumps, found video signal from tuner pin 18 was too low, 1/2 volt. -
SonyKV13VM50FLASHING IN PICTURE, TUNER After warm up lines would flash in picture. Taping chassisanywhere would make symptom appear. Sprayed tuner with freeze, pixstabilized.
SonyKV13VM20INTERMITTENT FREEZES, CAPSTAN MOTOR Picture intermittently freezes.
SonyKV13VM20INTERMITTENT POWER ON, RE SOLDERED R1807 Power supply would intermittently not oscillate.
SonyKV13M10NO PICTURE AND NO FUNCTIONS, REPLACE CF001 Unit has no function. Checked IC101 pin 15 ok, but pin 7 has no output. Checked osc pin 25, found waveform wrong and frequency.
SonyKP53S15FM RADIO RECEPTION THROUGH TV SPEAKERS, SEE MOD BELOW Customer reported FM radio signal when volume was turned allthe way down or if mute was used. This happened in any mode , tuner,video etc. whether or not cables or antenna were connected. Customerlives 1-2 miles from tranmission tower.



Assistência TécnicaAs dicas apresentadas destinam-se a técnicos de eletrónica, a tentativa de reparação ou assistência sem ter conhecimentos de eletricidade e eletrónica, podem provocar danos mais graves aos equipamentos e, devido a tensões muito elevadas em alguns circuitos, graves danos fisicos que podem constituir um risco em determinadas reparações.

Não arrisque reparar equipamentos com tensões elevadas se não tiver conhecimentos técnicos para o fazer em segurança.

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