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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKX2501INTERMITTENT SHUT DOWN, REPLACE HVR BLOCK Unit would shut down intermittently.
SonyKV9200RETRACE LINES ON DARK SCREEN This unit had retrace lines with brightness control turneddown.
SonyKV5300TUNER ASSEMBLY TOUCHING FUSE HOLDER Tuner assy touching fuse holder F601. Repaired six units withsame problem.
SonyKV2675RNO VIP, RESET PROCEDURE Set snaps then VIP will not work, screen scrambled (1 end-user, 2 dealers). Also, IC104 (CX7958) will kill remote (another set).Snapping seems to come from pix tube. -HQ COMMENTS: As a first approach to the problem, please perform thefollowing reset pr
SonyKV2670RINCORRECT DISPLAY (AUX) ON THE SCREEN, USE KV-2675R REMOTE On screen display the following display selections muting,sleep, channels were displayed but AUX. appeared also. This happenedwhile the dealer was demonstrating the KV-2670R and I was observing.End-user came in also and wanted to know how to get rid of
SonyKV2670RUNIT WILL NOT SHUT OFF, "A" BOARD IC-103 REPLACED Unit will not shut off.
SonyKV2648RNO PICTURE NOR SOUND, RESOLDER INSIDE PRESCALER(BTP981) No picture nor sound, snow, VC control not working (0 volts).
SonyKV2145RPIC FOLDS OVER AT TOP, REPLACED D504/505/506 After two hours, picture folds over at top. Replace 10 kohmresistor (R520) as per FPR of Feb. 1984 but problem still occurred.
SonyKV1975RNO VIP FUNCTION, REPLACE IC105 Two units without VIP function. Remote, pix, sound andchannel display OK.
SonyKV1975RNO VIP FUNCTION, RESET IC 105 Servicer had two KV-1975R in which VIP would not function.Used the following procedure to reset the VIP circuit.
SonyKV1970RAUX DISPLAYED ON THE SCREEN, SEE SB 208R1 AUX character is displayed on the screen. The character canbe turned off by using the RM-718 remote control unit (The TV is suppliedwith the RM-717 remote commander).
SonyKV1947RNO COLOR ON CHANNEL 5 ONLY, 73MHZ TRAP INSTALLED No color on channel 5 only. This may be due to the fact thatthe cable company refuses to make cable connection to user unless thecable convertor box is used.
SonyKV1924INTERMITTENT SHUT DOWN Three spots on pix tube caused by an intermittent shut-down.Customer keeps watching until spots get bad. Servicer has had two andI know of 3 more.
SonyKV1922NO AUDIO NOR VIDEO Set has no audio nor video.
SonyKV1922NO RASTER At full voltage, output (horiz) transistor would get hot andthen short. Found the horiz. drive (Q507) signal was distorted. Tracedproblem to C526 (leaky) causing bias to change on drive transistor.



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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