Dicas Reparação




Modelo - Chassis KV1914


Pesquisa: KV1914 Enviar Dica Resolvida
Resultados 6
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(Chassis)
SintomaCausaSoluçãoPor:
SonyKV1914
HORIZONTAL LINES ACROSS TOP OF PICTURE, REPLACED C-529 The customer complained of horizontal lines across the top ofthe picture. On troubleshooting IC502 pin 9 does not have the 1.6V.
SonyKV1914
TUNING DRIFT Stations could be locked in, but then would drift off. Pin 10of IC201, AFT amp out was floating, and voltage was varying.
SonyKV1914
COLOR DISTORTION New picture tube would go soft on one of the colors - firstwas the red, second time the blue. Found filament voltage from theflyback incorrect. Peak to peak was 30V S/B 22, also ringing.
SonyKV1914
NO SOUND No sound. Voltage at Pin 21 of IC201 was low, should havebeen 5.8 VDC, was only 4.0 VDC.
SonyKV1914
NO UHF No UHF. Found B-E of Q103 shorted.
SonyKV1914
NO PICTURE Unit would blank out approx. after 1/2 hour, sound stillnormal. By turning set off for a while and turning it back on, the unitwould again work for a shorter period of time and blank out. Found thatby freezing vertical output IC unit would function nor


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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