Dicas Reparação




Modelo - Chassis KV27XBR10


Pesquisa: KV27XBR10 Enviar Dica Resolvida
Resultados 69
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SonyKV27XBR10
NO VERTICAL DRIVE FROM IC301/PIN 31, REPLACED D253 AND D252 Missing vertical drive from IC301/pin 31, on the A Board.
SonyKV27XBR10
Q-503 FAILURE, RESOLDER T-501, IC-601, IC-901, AND T-500 High failure rate of Q-503 attributed to bad solderconnections on T-501, IC-582, IC-601, IC-901 and T-500. Must resolder allof above or Q-503 will fail again. This applies to all ANU-1 sets. -HQ COMMENTS: T-501 H Drive, IC-582 3v reg, IC-601 Stand By
SonyKV27XBR10
INTERMITTENT OR NO PICTURE, REPLACE CP-103 Intermittent or no picture. Traced problem to CP-103 and pinwas broken.
SonyKV27XBR10
RASTER BLANKED, REPLACED Q-716, AND R-744 ("C" BOARD) No RGB outputs. Confirmed picture was muted. CheckedV-blanking pulse from IC-301 traced to Q-716 on C board. Also noticedR-744 was blown.
SonyKV27XBR10
NO PICTURE, MICRO LOCKED UP, REPLACED DIODE CP111 ON PIN 36 No picture only snow. IC-101 on the A Board is locked up.
SonyKV27XBR10
WON'T MEMORIZE CHANNEL CAPTIONS, REPLACED IC-1301 Set will not memorize channel captions. Traced problem to de-fective IC-1301.
SonyKV27XBR10
PINCUSHION, REPLACED Q-505 ALSO SEE FLASH # 55 Severe pincushion problem. Q-505 and Q-504 had been changed.Waveform from IC-531/pin 1 was good. Signal at emitter of Q-504was correct but became distorted at the base of Q-505. All components inthis area checked ok.
SonyKV27XBR10
HORIZONTAL CENTERING: SERVICE MANUAL PROCEDURE, SEE SB # 102 The Horizontal Centering adjustment on page 30 of the servicemanual, omits the fact that a Horizontal Centering tap exists as shown onpage 36, the F board. If the remote commander adjustment is made withthe tap in the wrong place, some sets will exhibit
SonyKV27XBR10
ANODE CONNECTOR MISSING, P/N 1-540-006-32 SEE SB 108 When replacing the A board, the anode wire from the flybackis missing. Is there a part number for it? -HQ COMMENTS: Please order part number 1-540-006-32 which is the AnodeCable. Future Boards will have the cable with the board. Service Bulletinnumber
SonyKV27XBR10
NO SOUND, NO VIDEO, NO REMOTE FUNCTIONS, REPLACED IC-301 Receiver had no sound, no video, no remote functions and hi-voltage ok. I found no pulses on data and clock line between associatedICs. Also, no vertical pulse on pin 29 of IC-301.
SonyKV27XBR10
NO CAPTION MEMORY, REPLACED IC-1301 Unit would not remember captions. Dealer stock unit at inde-pendent servicer. IC-101, 102, 107, 103 changed - no help. Changed Aboard. Did not fix problem. This unit was down a long time.
SonyKV27XBR10
SET IN-OPERATIVE High voltage, no audio and no picture. Found no verticaldrive out of pin 31 of IC-301. Also found vertical osc running at pin 29(vertical pulse to IC-101). The vertical drive circuit was muted insideIC-301.
SonyKV27XBR10
DEAD, SHORTED HOR. OUTPUT Q-503, SEE SERVICE BULLETIN 161R1 Q-503 was shorted.
SonyKV27XBR10
NO AUDIO Audio is stuck on SAP mode only. There is no audio on mainor both modes.
SonyKV27XBR10
SET GOES INTO OVP INTERMITTENTLY AT TURN ON, REPLACED Q-651 Set goes into OVP intermittently at turn on (every 4 out of 5times). When unit works, all voltages are correct.


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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