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Modelo - Chassis KV1952RS
Pesquisa: KV1952RS Enviar Dica Resolvida
Resultados 10
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1952RS | UNIT SHUTS DOWN, REPLACE D502 | This unit would immediately shut down. We defeated the shut-down circuit by shorting the line from the HVR. Then running the unit upon a variac we found IC501/Pin 9 to be only 3.4V. The cause was a defec-tive D502. | ||
| Sony | KV1952RS | POOR LOW BAND RECEPTION, REPLACE BAND SW IC002 | The unit had a snowy picture on #2 and progressively gotbetter through #5. High band and UHF worked OK. We found the source ofthe problem to be a defective band switch IC. In the low position the H/Sterminal on the tuner is supposed to be -10V. It wa | ||
| Sony | KV1952RS | INTERMITTENTLY SET WOULD COME ON, REPLACE X2001 | Intermittently set would come on at full volume, and have nocontrol of volume, picture, channel change, and no indicator. Sometimesthere would be no sound or control of functions. Found X2001 intermittingcausing the microprocessor IC2001 to lock-up. | ||
| Sony | KV1952RS | NO CHANNEL INDICATION, Q2002 OPEN | This unit had no LED drive for the channel indicator. Alsosound, pix, channel controls did not work. It gave every indication of alocked up uPC. We found Q2002 on M board to be open and causing theproblem. | ||
| Sony | KV1952RS | INTERMITTENT SHUT DOWN, REPLACE C549 | This unit intermittently shuts down. We found C549 to bethermally intermittent. | ||
| Sony | KV1952RS | NO FUNCTION, REPLACE X2001 | Unable to control volume picture or channel change. LED wouldnot light. Found osc crystal low in amplitude at IC2001. Freezingcrystal would change amplitude from 20mV to 2V. | ||
| Sony | KV1952RS | DARK PICTURE AND RETRACE LINES, SHORTED C548 AND OPEN R555 | Dark pix-retrace lines very faint. No screen voltage toG-2 of CRT. | ||
| Sony | KV1952RS | PICTURE DISTORTION, REPLACE IC003 | The frequency would change intermittently. You could freezeIC005 on MU board and then it would look up. Pin 4 of IC003 on MU boardhad an incorrect voltage. | ||
| Sony | KV1952RS | SNOWY PICTURE, C537 SHORTED | Snowy picture on all channels. Worse on low band. Found-30V line to be missing, i.e. 0V. | ||
| Sony | KV1952RS | SNOWY PICTURE, REPLACE IC005 | Snowy picture. No VC. This unit had output from the localoscillator but was not being divided down in the prescaler. There was nooutput at TP61. We found IC005 - prescaler/PLL IC to be defective. |