Dicas Reparação




Modelo - Chassis


Pesquisa: Enviar Dica Resolvida
Resultados 81393
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonySLV696HF
NO E TO E VIDEO: IC102 MA106 BOARD No E to E video. IC-102 on the MA-106 board not switching.
SonyCCDTR81
DOES NOT PLAY A HI-8 RECORDED TAPE/REPLACE Q-431/VC-87 Unit would not play a Hi-8 recorded tape. It would record aHi-8 tape playaable on other Hi-8 units but not on itself. Signal tracingshowed Hi-8 playback signal at the base of equalizer Q-434 on the VC-87board but it was receiving insufficient forward b
SonyKV2084R
INOPERATIVE, OPEN Q602 RELAY DRIVE Unit was inoperative.
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
SonyMDP333
NO COLOR WHEN USING A MPU F100 FRAME GENERATOR: ADJUST CV601 The customer loses color on MPU F100. The color looked fineon the monitor, but it would not lock up on vectorscope.
SonySPPA40
NO OPERATION - MISSING GROUND FROM CRACKED H/S PCB In normal working condition, after plugging in the handsetbattery and pressing TALK, the handset TALK LED flashes as the handsetwould not lock up because it was never set on the base to start the IDcode handshake. In this particular unit, this would happ
SonySPPD15
RECEPTION IN HANDSET, BUT NO TRANSMISSION IN EITHER CHANNELS When testing the handset on the analyzer, I found the handsetwould receive on both channels, but there was no transmission in eitherchannels. After physically looking at the handset main PCB, I found thecoil L-512 loose. After resoldering it back in, ev
SonySPP120
WEAK RECEPTION IN HANDSET, TX GOOD - REPLACE IC-3 I tested the handset's reception and transmission from theanalyzer. I found out the handset had bad reception. First, I went to theduplexer and it checked out OK. Then I took voltage measurements of Q1,Q2, and Q3, and they all checked O.K. Moving on to I
SonyKV27TS20
AFTER TURNED ON, PIX STAYS IN BLANKING FOR 30 MIN, C574 At cold start, the IC 301 pin 34 high (5V). IC 101 pin 43 high(5V). D506 cathod low, D505 cathod high, IC 101 pin 51 OK (H puls), pin 50faulty. IC 501 pin 6 faulty.
SonyKV27EXR25
NO PICTURE, REPLACED OPEN R702 ON "C" BOARD There was no picture, and no voltage on G2. I found R702open.
SonySPPA40
ANSWERING MACHINE WOULD RECORD ICM FOR ONLY TEN SECONDS. The unit came in recording an incoming message for only tenseconds. IC3/Pin 27 (VOX input) should have pulses during ICM from thePB/REC AMP IC15/pin 25. I noticed there were no pulses in the bad unit.Following it back to IC15/pin 12 (audio input), I fo
SonyCFS905
NO MOTION FROM THE MECHANISM-REPOSITION SLIDER(REF 170) The mechanism was stuck in pause. After inspecting themechanism, I found the slider (ref #170) had popped out of its retainingclips on the chassis assembly, which holds the cassette in a pause mode.
SonyKV19TS20
SNOW, REPLACE TUNER Only static would come when powered up. After hitting thetuner, the picture would come back.
SonyFDL380
SCREEN WOULD ONLY PLAY FOR 15 SECONDS, FLOURESCENT TUBE The set would run for fifteen seconds before it would blackout. The flourescent tube would darken on end and protection circuitwould kick in.
SonyKV13EXR91
NO REMOTE OPERATION, REPLACE DETECTOR IC103 I checked the voltage to IC103 and GND and it was fine,but there was no signal out.


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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