Dicas Reparação




Modelo - Chassis KV19TR20


Pesquisa: KV19TR20 Enviar Dica Resolvida
Resultados 13
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV19TR20
SHUT DOWN, REPLACED YOKE Immediate shutdown, regardless if AC was lowered with variac. Unplugged DY1 connector and H.V. remained on.
SonyKV19TR20
DEAD, REPLACED T501 Dead, Smoke out of unit.
SonyKV19TR20
UNIT SHUTDOWN AFTER 30 SEC TURNED ON, R568 VALUE CHANGE The unit would go into shutdown after about thirty(30) secondsof operation.
SonyKV19TR20
BLACK LINES IN PICTURE, REPLACE TUNER The unit had video with black lines overlapping.
SonyKV19TR20
TELEMATIC SETTINGS FOR P3B CHASSIS Could not find the Telematic settings for P3B chassis.
SonyKV19TR20
INOPERATIVE SET, REPLACE C-563 & R-568 Inoperative set. No horizontal osc function. IC-301 is inop-erative due to no 9V line. Inspection revealed horizontal output circuitinoperative due to open R-568. Replacing R-568 restored high voltagebut set was in high voltage protect mode. Pulse o
SonyKV19TR20
WEAK SOUND, REPLACE C-252 ON "K" BOARD Weak sound.
SonyKV19TR20
DEAD (NO HV), REPACED Q-550 H DRIVE TR No HV.
SonyKV19TR20
NO PICTURE, RESOLDER CP-112 No picture because IC-101 was causing IC-301 (pin 34) to mutethe picture. IC-101 (pin 43) voltage was high due to bad solder on 9 voltside of CP-112.
SonyKV19TR20
DEAD, REPLACED OPEN C-605 Relay would not close. Relay was checked along with Q-601,R-611, R-610. Both diodes only developing 50V DC. Found ripple presenton positive side of C-605. Because of this ripple the DC voltage droppedto 50 volts DC. Found one leg missing from C-605.
SonyKV19TR20
ARCING, CRT Internal arcing.
SonyKV19TR20
P/N FOR ANTENNA IN S/M IS INCORRECT, 1-501-372-41 Service manual says 1-501-372-21 is the antenna for thismodel. However, it doesn't fit the unit. -HQ COMMENTS: 1-501-372-41 is the correct antenna for this model.Please correct your service manual.
SonyKV19TR20
REDDISH VERTICAL LINE, ADJ H REQ. RV-501 There was a reddish vertical line about 1 1/2 inch wide inabout 1 inch from the left side. Very noticeable when no color ispresent. This was caused by the horizontal AFC being slightly offcausing a phase shift problem.


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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