Dicas Reparação SONY




Modelo - Chassis


Pesquisa: SONY Enviar Dica Resolvida
Resultados 18945
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV1917
INTERMITTENT SHUT DOWN Intermittent shutdown.
SonyFD30A
NO AUDIO, OPEN GROUND BETWEEN G AND K BOARD No audio.
SonyKX2501A
DEAD SET, REPLACED D1514 The power supply was whistling and there was no picture orsound. We found D1514 in the high voltage regulator to be shorted. Thispresented about 30 ohms to the 140V line. The fuse never opened.
SonyKV2648R
HEAVY ARCING, RESOLDERED BROKEN ETCH When set was turned on, heavy arcing would occur around theflyback. Servicer had replaced the flyback, which did not help. Foundground etch near T503 was open. This caused the flyback return to beopen. We discovered this by connecting the osc. ground
SonyKV2647RX
DARK PICTURE OF CABLE CHANNELS Dark picture on only the cable channels that were scrambled.The scrambler was made by Octagon Regency. The cable system was DavisCommunity Cable Co. in Davis, Calif. The problem with the cable scrambledchannels was with the horizontal sync.
SonyKV2647RX
UNLOCK SIGNAL ON CABLE CHANNEL, REPLACE C208 AND ADJ T203 Customer on cable unable to lock in on HBO channel 18.
SonyKV2647R
NO DISPLAY TIMER FUNCTION, AC WIRES TO MF-7 REVERSED Display time would be on but the time would not change whenthe set was off. When set is turned on, the clock would work until theset was shut off.
SonyKV1924
WEAK CRT This unit looked like it had a weak CRT.
SonyKV1714
NO HV SYNC, LACK OF BRIGHTNESS 1) No sync vertical 2) Vertical roll 3) Horizontal out offrequency 4) Picture is too dark.
SonyKV1545R
POOR REMOTE SENSITIVITY, REPLACED L1 Unit had poor remote sensitivity (4 inches). Found coil L1shorted. Resistance should be 22 ohm, it was 2 ohms.
SonyKV2647RX
NO PICTURE ON CABLE, ADD RESISTOR WITH R054 Set will not work on cable (HRC system). One fix was to puta 100 ohm resistor across R054. This seemed to work in the past. On thenew sets KV-2647RX this fix does not work in all cases. The 100 ohm willcause the set to hunt shift back and forth. Wha
SonyKV2647RX
JAIL BARS, ADD GROUND WIRE Jail bars in picture. This is the 2nd 2647RX customer hashad. Customer claimed jail bars on this unit took 2 weeks to develop.Tried tuner, prescaler, D250 all zero effect.
SonyKV2647RX
PICTURE DISTORTION, REPLACE R557 When set was first turned on, picture lacked about 4 inchesof vert sweep at bottom and slight compression at top. After about 20seconds, picture and sould would go out. Inspection revealed the 15Vline to the 12V regulator was only 9VDC. The other 15V
SonyKV1954R
NEED P/N FOR UHL SWITCHES, PART OF RV001 1-228-943-00 I need the P/N for the U-H-L switches on M-2 board. -HQ COMMENTS: The switches in question are part of RV001 Volume Block,Preset (P/N 1-228-943-00). The whole block has to be replaced.
SonyKX2501A
PICTURE FADE IN AND OUT, REPLACED Q1320 When set would get warm, the video information would fade inand out very slowly. By keeping Q320 turned off, the video would notfade. Everytime the video started to fade, the base of Q320 would go lowand it would turn on. Found Q1302 on BD board was l


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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