Dicas Reparação
Modelo - Chassis
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Resultados 81389
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | SPPA60 | UNIT GRABS A LINE AS SOON AS POWERED UP - CHANGE Q-9. | The unit would grab the line as soon as the power wassupplied. I checked the voltage at the base of Q9 and found it was0 volts then I checked the voltage on the collector of Q9 and found it wasalso 0 volts. I found Q9 to have a short from emitter to co | ||
| Sony | ITD10 | LOW DIAL TONE ON THE SPEAKERPHONE - REFLOW C-347 | The unit had a low dial tone on the speakerphone. I foundC347 was cold soldered. | ||
| Sony | SPP57 | NO RING NOR PAGE - REPLACE SW-501, P/N 1-571-377-11 | The unit would not ring or page. I found SW501 was always inan off position no matter what position the switch was in. | ||
| Sony | SPP57 | NO LINE LED - REPLACE D-9, P/N 8-719-029-97 | The unit would grab a line, but line LED would not light. D9(Line LED) had proper voltage to light. Eventually, I found D9 was open. | ||
| Sony | SPPA20 | HANDSET DID NOT RECEIVE - REPLACE FT502, P/N 1-239-459-11 | The handset did not receive. I found FT502 was open. | ||
| Sony | SPP75 | NO TALK- ERROR BEEPS - REPLACE Q-551, P/N 8-729-821-27 | When the talk button was pressed on the handset, the unitwould not scan through the channel LED's but LED 1 and 2 would blink alongwith five error beeps. The handset was not transmitting during the test.I found Q551 open which is the TX switch to supply | ||
| Sony | SPP95 | NO TALK- ERROR BEEPS - REPLACE Q-551, P/N 8-729-821-27 | When the talk button is pressed on the handset, the unit wouldnot scan through the channel LED's but LED 1 and 2 would blink along withfive error beeps. The handset was not transmitting while in test. Ifound Q551 to be open which is the TX switch to su | ||
| Sony | ITD200 | NO TONE DIAL - REFLOW C-334 | The unit would not tone dial. I found C334 open (coldsoldered). | ||
| Sony | CDPC315 | INTERMITTENT OPEN AND NO OPEN DISK SKIP (RESOLDER M701) | The unit intermittently opened, and there was no disk skip.Upon diagnosis of unit, I found a cold solder joint on the negativeterminal of the table motor M701. | ||
| Sony | STRAV770X | NO AUDIO OUTPUT - F852 & F851 FAULTY, CNB731 SHORTED | Fuses F852 and 851 would blow when the speaker selector switchwas turned to the off position. I found +20 volts on the surround relaylines of CNB731 on the surround Amp Board. Upon further inspection, Ifound B+ and surround relay line of CNP732 shorted | ||
| Sony | SPP85 | NO TALK/ERROR BEEPS - REPLACE Q-551, P/N 8-729-821-27 | When the talk button was pressed on the handset, the unitwould not scan through the channed LED's but LED 1 and 2 would blink alongwith five error beeps. The handset was not transmitting while in test. Ifound Q551 to be open, which is the TX switch to | ||
| Sony | SPP75 | RINGS, BUT WILL NOT CONNECT-REPLACE RY-301, P/N 1-515-773-11 | I found the unit was able to ring, but it would not grab aline. Q302 was turning on, but the line relay RY-301 would not kick. | ||
| Sony | SPP95 | NO HANDSET TRANSMIT - REPLACE D-551, P/N 8-719-949-46 | The handset would not transmit. I checked IC651 (PLL) and itwas operating properly. Next, I checked pin 1 of IC551 and found nofrequency. Also, D551 was open. | ||
| Sony | SPP85 | NO HANDSET TRANSMIT - REPLACE D-551, P/N 8-719-949-46 | The handset would not transmit. I checked IC651 (PLL) and itwas operating properly. I checked pin 1 of IC551 and found no frequency.In addition, D551 was open. | ||
| Sony | SPP75 | NO POWER LED - REFLOW R-260 | No power LED. Unit worked fine, but the power LED did notlight. I found R260 cold soldered. |