Dicas Reparação




Modelo - Chassis KV25XBR


Pesquisa: KV25XBR Enviar Dica Resolvida
Resultados 95
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV25XBR
INTERMITTENT RIGHT CHANNEL AUDIO, RESOLDERED J001 Intermittent right channel audio. Audio signal was presentat connector U9/pins 1 and 4. Audio signal could also be seen atU9/pin 3, open signal return path.
SonyKV25XBR
DEAD , REPLACED "C" BOARD AND FLYBACK Found unit dead bad FBT taking out 40v line to C board.Replaced C board and the new one started to burn pack on D board.Found leads of connector D6 switched on 2 new boards, the 200v and 40vwire.
SonyKV25XBR
DEAD, REPLACED FBT, H OUT AND HVR Found shorted FBT, H out and cracked HVR.
SonyKV25XBR
NO VIDEO/AUDIO, SLEEP ON, REPLACED FLYBACK TRANSFORMER Sleep comes on but no video or audio.
SonyKV25XBR
RGB STAYS ON, REPLACED IC-103 RGB stays on all the time. No RGB switching.
SonyKV25XBR
NO TV MODE ONLY VIDEO, REPLACED S1009 Push any button except power, TV-video, or RGB. The onlyresponse is the TV will cycle through Video 1, Video 2, and Video 3. TheTV mode will not function at all. Power & RGB function correctly.
SonyKV25XBR
DEAD, REPLACED FBT, HVR, AND IC-1502 Found flyback shorted, HVR cracked. Put new FBT & HVR. No pin traced to IC 1502.
SonyKV25XBR
NO PIX,RESOLDERED CONNECTOR GB BOARD REPLACED Q209 AND D204, No picture,
SonyKV25XBR
WHITE POWDER BUILD UP ON CABINET AND CHASSIS (UPDATE) Some complaints of a fine white powder or dust collecting onthe outside and inside of cabinet. There seems to be a build-up aroundpicture tube shield and A board. -HQ COMMENTS: Dust collecting on outside of cabinet is definitely ofoutside origin. Ever
SonyKV25XBR
FAILURE TO DISPLAY PICTURE, REPLACED Q-1504 The TV had no picture and functions on the front panel wereinoperative. Vertical pulse was missing on pin #4 of IC103 on the A-board. The other problem was there was no video out of IC 301. Theoutput pins 34, 33, and 32 were all Ov. All pulses and DC
SonyKV25XBR
NO VIDEO/SWITCHING PROBLEM There was no video displayed on the screen or present at themonitor out jack. Sound was ok and characters were present. We found theproblem to be caused by an open pull up resistor R-913 U board. Thisprovides bias for IC-805/video switching and the vi
SonyKV25XBR
SET SHUTS DOWN - WHEN ITS ON HORIZONTAL WIDTH IS PULLED IN Set shuts down upon turn on but if you turn it on a number oftimes, it will turn on but horizontal width is pulled in approximately 1/4to 1/2 inch on each side of the picture.
SonyKV25XBR
FUSE BLOWS WHEN UNIT IS PLUGGED IN Blows F-601 7A/125V. As soon as unit is plugged in, fuseblows.
SonyKV25XBR
DEAD SET, REPLACED THP-601 Set had open line fuse. I could find no shorts. New fuseblows instantly.
SonyKV25XBR
SEVERE DISTORTION - LOOKS LIKE EXTREME PINCUSHION Severe distortion on sides and center of picture.


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