Dicas Reparação




Modelo - Chassis


Pesquisa: Enviar Dica Resolvida
Resultados 81447
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV32XBR37
NO MAIN PIX, REPLACED COMB FILTER Had child pix but no main pix. Traced video to CN157/pin 8(Video in) on the UA Board. Video input to comb filter Module CN1201was OK. Had no C or Y output from filter CN157/pins 2 & 4. Jumpered V into Y and C out and got main picture back.
SonyKV32XBR36
PIP HAS FLICKERING AND INCORRECT COLORS, C3052 ON P1 BOARD Unit came to shop with PIP flickering and incorrect colors,then symptoms changed to no parent or child picture, but High Voltageis normal. Check P1 board and found C3052 shorted. Apparently, leakyC3052 was original cause, then it got completely shorte
SonyKV32V15
NO PICTURE NO SOUND, RE SOLDERED Q591 TV has noise but no sound or raster.
SonyKV27XBR95S
VERT.INTERFERENCE IN PICTURE,RE SOLDERED C652,Q605,AND D655 Vertical interference throughout the whole picture. SOLUTION: Re-soldered on the power supply board components C652, Q605,and D655.
SonyKV27XBR55
NO VIDEO, RANDOM RED GREEN & BLUE ON TOP OF SCREEN No video, rainbow, red, green and blue hor lines across thetop of the screen. DC voltage on IC500/pin 2 was about 7v. Wentback to 15v rect and measured 7v R517 read 23 ohms.
SonyKV27XBR55
NO PIX, REPLACED D1304 No picture. Discovered system clock pulls IC301/pin 47 below 5V. Found leaky diode D1304 on B board.SOLUTION: Replace diode.
SonyKV27XBR37
NO COLOR(B/W PICTURE), REPLACE IC301 Y/C JUNGLE TV has picture and sound, but no color.
SonyKV27XBR37
NO MAIN PIX, REPLACED COMB FILTER Had child pix but no main pix. Traced video to CN157/pin 8(Video in) on the UA Board. Video input to comb filter Module CN1201was OK. Had no C or Y output from filter CN157/pins 2 & 4. Jumpered V into Y and C out and got main picture back.
SonyKV27TS27
TUNER HAD ADDITIONAL COLD SOLDER JOINTS THEN IN SB 203R2 In performing what was required in Service Bulletin 203R2. I found additional bad solder connections, then listed in the bulletin.
SonyKV27TS27
DISTORTED AUDIO AFTER WARM UP, REPLACE MM201 Audio got distorted after warmup Pin 12 of MM201 looked ok but the ouputs at pins 10 & 11 looked bad.
SonyKV27TS20
NO PICTURE NO SOUND, BLINKING SLEEP LIGHT TV has no picture and sound, but sleep light keeps blinking.
SonyKV27S15
LOSES COLOR, LEAKY CAPS ON M BOARD After 15-20 minits, color starts fading slowly, Replacing IC301 and X301 did no solve problem.
SonyKV27S10
NO PICTURE, COLD SOLDER ON Q581(HOT) TV has sound and B+ is ok, but no high voltage.
SonyKV27S10
RED VIDEO WITH RETRACE, REPLACED IC301 Video was red with retrace. Cooled IC301 with freeze spraypictures went blue with retrace. IC-301 siginal going in was OK buthad low RGB output to the C board.
SonyKV2782AEB
TV SHUTS OFF BY ITSELF, RESOLDERED IC-351 ("A" BOARD) TV shuts off by itself.


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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