Dicas Reparação




Modelo - Chassis KV27TS20


Pesquisa: KV27TS20 Enviar Dica Resolvida
Resultados 22
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SonyKV27TS20
VERTICAL FOLDOVER IN MIDDLE OF SCREEN, REPLACE R-543 Unit had foldover in middle of picture vertically. Drivewaveform and feedback waveforms were incorrect. R-543 changed value from27K Ohm to 35K Ohm. Resistor is in the feedback circuit.
SonyKV27TS20
NO VIDEO, REPLACE COMB FILTER CM-301 Unit displayed no video, but had character displays. Hadsound - G2 normal.
SonyKV27TS20
PICTURE BOWED IN ON SIDES, REPLACE C-566 Pin amp and phase control have no effect found open C-566. -HQ COMMENTS: C566/4.7uF 50V is located off D514/pin damper diode.
SonyKV27TS20
SHUTDOWN, REPLACE YOKE AND R-578 Set in shutdown. R-578 dissipated, reading zero on the 27,12, and 9.3 volt lines.
SonyKV27TS20
NO RASTER, REPLACE C-574 No raster - sleep light on and audio is muted. Turning upscreens raster showed retrace and foldover at top of screen. Sprayingvertical section raster would return but retrace still visible and fold-over still present.
SonyKV27TS20
HIGH-PITCH SQUEAL, SEE SB TVP0114, 1-451-275-41 Intermittent squeal from yoke. -HQ COMMENTS: Please replace the yoke using P/N 1-451-275-41. This wascovered in Service Bulletin TVP0114.
SonyKV27TS20
RESISTOR R587, DIODE D518 NO SCREEN VOLTAGE Resistor R587 was found opened, new resistor installed andburned within a few seconds. Found diode D518 at fault, diode measuresgood with meter but is breaking down under voltage.


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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