Dicas Reparação SONY
Modelo - Chassis
Pesquisa: SONY Enviar Dica Resolvida
Resultados 18945
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2654R | SHUT DOWN, REPLACE Q501 AND Q502 | If set was turned on with 120VAC, horiz. output would shortout within 2 to 3 seconds. Removing collector B+ off horizontal outputI was able to bring set up to 120VAC and observe the driver output. Foundwaveform to be distorted, should look like a squar | ||
| Sony | KV2649RX | BAD RECEPTION ON CABLE | If the cable signal coming into the distribution amplifierbeing used by the dealer is disconnected and reconnected, the channels onthe KV-2649RX come back extremely detuned, and can only be received if youaccess another channel and the set is OK. -HQ CO | ||
| Sony | KV2649R | NO POWER AND TUNING OPERATION, SHORTED D021 ON MT BOARD | Unit could not be powered off nor any channels changed,display locked on channel 11, reception was normal. | ||
| Sony | KV2648R | BUZZ IN AUDIO, ADJ AFT AND SOUND IF | Buzz on some channels in audio. | ||
| Sony | KV2647R | JAIL BARS ON THE SCREEN | This unit had very faint jail bars on the left side ofpicture. D250 zener voltage - 13.21 volts. 12 volt line - 12.61 volts. | ||
| Sony | KV2644R | INTERMITTENT TIME DISPLAY, REPLACED NEON TUBE ND3051 | Time indicator display would go out intermittently. Found bytapping the neon tube when the set was cold, I could cause the problem tohappen. But after the set warmed up, could not produce the problem. | ||
| Sony | KV2643R | JAIL BARS ON THE SCREEN, REPLACED C539 | This unit had jail bars across the screen. | ||
| Sony | KV1954R | NO TURN OFF, REPLACE IC001 | Dealer noticed he could not turn off the set, which was ondisplay. None of the other functions worked either. After discussingwith the dealer I suspect failure was caused by static electricity. | ||
| Sony | KV1954R | NO AUDIO, REPLACE REG IC601 | No audio. | ||
| Sony | KV1953RS | BAD RECEPTION, REPLACE BAND SW IC002 | This unit did not have the proper band switching voltages.We found the input to IC002 correct but the output was incorrect. | ||
| 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. | ||
| Sony | KV1952R | DEAD, D601 OPEN | No B+ regulation. Found one rectifier in D601 opened (noresistance reading). | ||
| Sony | KV1948R | BRIGHTNESS CHANGE, CABLE SIGNAL PROBLEM | Going to or going from ch. 13, the brightness will change. |