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Modelo - Chassis KV1972R
Pesquisa: KV1972R Enviar Dica Resolvida
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1972R | WHAT IS FUNCTION OF DI0DE/NOT LISTED ON DIAGRAM | Diode is mounted between pin 4 and 7 of IC105. Diode notlisted in manual. -HQ COMMENTS: The diode itself is as follows: RD 13EB2, part number8-719-100-68. If servicer replaces the IC105/uPD6250C, this diode is nolonger necessary. (The diode is just | ||
| Sony | KV1972R | RADIO INTERFERENCE, SEE SB CTV0288R | Picture remains free of interference but sound is picking upthe transmission. Even with unit turned off, sound is still there.Customer has an amateur radio station. | ||
| Sony | KV1972R | GRAINY PICTURE, ADJ AFT T203 AND REPLACE IC201 | Picture was slightly grainy and sound on ch. 11 was intmtlydistorted. We found that the AFT UP was continually active. | ||
| Sony | KV1972R | NO HIGH VOLTAGE, REPLACE HDT AND FLYBACK | Set would come on without pressing power button. No high vol-tage. Blew C540. Measured 500V D507 192V line. Changed flyback. Sameproblem, again. Blew C540. Incorrect waveform at base of Q502. Changedhorizontal drive transformer. Set came on and | ||
| Sony | KV1972R | GRAY AREA RIGHT TOP OF SCREEN, ADJ V BIAS, SIZE & PIN | 1/4X3 gray area right top of screen during caption broadcast,at high contrast level. | ||
| Sony | KV1972R | NO MANUAL CONTROL, REPLACE IC105 | All front panel controls on the unit became inoperative (SND,PIX, CHAN, PWR), however, the remote worked on all functions. |