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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyEVS550UERRORS IN PROCEDURE FOR SP/LP SWITCHING ADJUSTMENT On page 174, section 9-4-4 (Adjustment Methods),steps 1-5 need corrections: Service Manual (wrong): Correct procedure: ---------------------- ------------------- 1. Set S110
SonyEVA50WON'T EJECT WON'T PLAY - REPLACED MODE SW After tape loads, nothing else happens. You cannot play the tape or eject it.
SonyEVA50NOT ACCEPTING TAPE - REPLACED CASSETTE COMPARTMENT Unit loads tape down into chassis, then ejects tape out. Drum not spinning.
SonyEDC55CHROMA NOISE ON RECORD/PB - LEAKY CAPS ON VR-19 & VC-49 BRDS Excessve red and blue color noise on record & PB.
SonyKV32XBR85SUPPER WOOFER SCHEMATIC MISSING FROM MANUAL Service Manual does not have the schematic for the supperwoofer in it. -HQ COMMENTS: The Supper Woofer is the same as in the KV-27TS29 manual. Please refer to that manual for service information.Tokyo will release a service manual suppl
SonyKV32XBR45CRT P/N IS FOR YOKE In the Service Manual back page the Yoke P/N is listed as aCRT. The second V901 is not the CRT but the Yoke P/N.
SonyKV32XBR37NO POWER BUT RELAY CLICKS, REPLACED C684 ON D BOARD The unit has no power but relay clicks and has sound.
SonyKV32XBR100PART NUMBER FOR THE 50O EXTENSION CABLE, 1-900-800-86 On page 12 of the Service Manual a 50p extension cable isshown between the AB and X board. There is no part number in theservice manual for this extension cable. -HQ COMMENTS: The part number for this extension cable is 1-900-800-86.
SonyKV32SXR10INTERMITTENT RED FLASHES IN PICTURE, RE-SOLDERED IC301 Customer complaint of intermittent flashes of red in pictureset was sensitive to vibration or movement. -SOLUTION Located cracked solder connections on IC301 also NM301, andDl301 and numerous connector sockets. Resoldering corrected the problem.
SonyKV29XBR85PICTURE SMEARED, REPLACED DIGITAL COMB FILTER ON B1 BOARD Picture smeared, largest areas had silvery blotches similarto effect caused by low emissiono n a crt. Also noticed noise andherringbone in background. Signal tracing showed a good video enteringdigital comb filter but noise at its output.
SonyKV27XBR45CRT P/N IS FOR YOKE In the Service Manual back page the Yoke P/N is listed as aCRT. The second V901 is not the CRT but the Yoke P/N.
SonyKV27XBR37LOW LEVEL HUM, SEE SB 277 Very low lever hum ~60hz coming from left and right speakerswhen volume is adjusted so that only 2 or 3 bars are visible on display.Cannot hear hum in a room with normal activity, however, when room is veryquiet it is quite noticeable. Problem: Is due t
SonyKV27V55NO PICTURE OR SOUND BUT HIGH VOLTAGE, IC301 TV turns on but no picture or sound only high voltage. Whenscreen voltage increased on G2 horizontal line shows. Measured verticaldrive, pulses missing from IC301 M board.
SonyKV27V55POOR PURITY, REPLACED CRT Unit came in with bad purity problem. Blotch in top right ofscreen. No physical damage, except for small scratch on bezel.
SonyKV27TS27INTERMITTENT POWER UP NO PICTURE,EPLACED IC501 Intermittently unit would go into shut down at power on.When unit stayed on there was no picture, sound was ok. Problem caused bydefective vertical output loading down the flyback sufficiently toactivate protect. A defective vertical is unusual but it



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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