Dicas Reparação




Modelo - Chassis


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(Chassis)
SintomaCausaSoluçãoPor:
SonyEVS700U
NO AUDIO AND VIDEO RECORDING/CHECK FOR BOARD CRACK Doesn't record video or audio, but erases old signal. Tracedto system control CPU. Found haircrack on PC board near IC101. Diagramattached.
SonyEVS7000
NO S VIDIO INPUT ON L1/CHECK SET-UP MENU Line one has no S video input
SonyCCDTR65
DOES NOT RECORD OR PLAYBACK/REPLACE C303 Unit has no video on camera or VCR. SOLUTION: Traced video signal in playback mode to pin 3 of IC151. Nooutput on pin 28. V mute on pin 29 4.7v. Disconnected pin 20 ofIC402. Picture became scrambled. Discovered C303 open.
SonyCCDFX630
DEAD/REPLACE X501 Unit dead.
SonyRMY122
CANNOT OPERATE PANASONIC VCR WITH TV REMOTE The RMY122 remote that comes with the set can not operate94 model Panasonic VCR's. HQ COMMENTS: The Tech. Dept. has a limited amount of upgraded RMY122remotes that contain the 94 VCR Panasonic codes.
SonyKV32XBR37
CANNOT OPERATE PANASONIC VCR WITH TV REMOTE, RMY122 The RMY122 remote that comes with the set can not operate94 model Panasonic VCR's. HQ COMMENTS: The Tech. Dept. has a limited amount of upgraded RMY122remotes that contain the 94 VCR Panasonic codes.
SonyKV32XBR36
INSUFFICIENT WIDTH, REPLACED D518 The unit had insufficient width. Pin cushion and othergeometry was good. The problem was caused by D518 changing its zenerthreshold. It checked fine with an ohm meter. Replacement resolved theproblem.
SonyKV32S15
VOL CAUSES SPEAKERS TO RATTLE, ADDED HEAT SHRINK TO SPK POST Customer complained of vibrating sound from cabinet at normalprogram volume levels. Servicer tried normal fixes of lining bezel withscotch tape and silicone, no help. He was able to duplicate resonance withaudio gen input freq from 100 to 150 Hertz. Fin
SonyKV27XBR37
CANNOT OPERATE PANASONIC VCR WITH TV REMOTE, RMY122 The RMY122 remote that comes with the set can not operate94 model Panasonic VCR's. HQ COMMENTS: The Tech. Dept. has a limited amount of upgraded RMY122remotes that contain the 94 VCR Panasonic codes.
SonyKV27TS30
NO PICTURE, REMOVED SOLDER BRIDGE BETWEEN D508 & C536 No picture or audio. When blanking circuit at pin 34 of IC301was defeated, the picture had severe vertical foldover. All inputs tovertical out IC looked normal. Found waveform at IC501/pin 3 only 3.9vp-p. DC was 26.2v dc. Found solder bridge between
SonyKV27TS29
UNIT DEAD,REPLACED T605 AND R644 Unit dead, R644 keeps opening. SOLUTION: Found the Stand By transformer T605 on D board defective. Replaced both R644 and T605.
SonyKV2783R
NO VIDEO ONLY LINES, REPLACED Q101 No video, no signal coming out on IC301/pins 24, 25, and 26which are the RGB signal. Voltage on IC301/pin 29 is high, above normal,4.2v this made RGB to mute.
SonyKV25TH
SERVICE POLICY ON THIS UNIT Who should service this set? -HQ COMMENTS: This is the Sony Trinitron twenty-fifth anniversary 5 inch color TV. Servicing of this model is authorized to be done bythe Sony Factory Service Centers only. Since only
SonyKV25TH
CRT PART NUMBER INCORRECT, CORRECT # 8-738-658-05 CRT part number in the Service Manual is incorrect.
SonyKV2182M9
LOSS OF BRIGHTNESS, REPLACED R852 AND D852 Dark screen with red cast. Voltage on CRT under 200VDC.


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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