Dicas Reparação
Modelo - Chassis KV1922
Pesquisa: KV1922 Enviar Dica Resolvida
Resultados 11
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1922 | TUNING DRIFTS | Tuning drifts. No problem if substitute VC supplied from10VZ source. | ||
| Sony | KV1922 | CRESCENT MOON EFFECT | When set was first turned on, you have a full picture. Witha crescent effect on the left side of the picture, it was about 12 incheshigh. After approx. 1 min., this dark area would fade and then thepicture went into a christmas tree effect with about 4 | ||
| Sony | KV1922 | INTERMITTENT PINCUSHION | Intermittent pincushion, changes every half an hour. | ||
| Sony | KV1922 | NO AUDIO NOR VIDEO | Set has no audio nor video. | ||
| Sony | KV1922 | NO RASTER | At full voltage, output (horiz) transistor would get hot andthen short. Found the horiz. drive (Q507) signal was distorted. Tracedproblem to C526 (leaky) causing bias to change on drive transistor. | ||
| Sony | KV1922 | PICTURE DISTORTION | Set had pincushion problem. Traced problem to Q514. Signalat collector was distorted. | ||
| Sony | KV1922 | NO COLOR | No color, found no 3.58MHz output at CX172. Traced problemto capacitor C330 (leaky, reading 300 ohms). | ||
| Sony | KV1922 | PICTURE DISTORTION (PIN) | Severe pincushioning and poor width. Q513 pin amp shorted andC810, IC546 to be dried up. After replacing these parts the pin and sizewere substantially improved. However during the first 5 minutes of opera-tion the left and right sides were pulled in | ||
| Sony | KV1922 | JAIL BARS ON LEFT SIDE | Jail bars on left side. Servicer had replaced flyback andyoke - no help. | ||
| Sony | KV1922 | PICTURE NOISE | Three inches wide bar at right side of screen top of bottomonly on HBO cable channel and only at customer's home only on thisparticular unit, other units tried and work fine. Servicer blamingcable co. Found 150pF capacitor between Q512 collector and gr | ||
| Sony | KV1922 | NO LOW VHF | No low band VHF-UHF OK. VHF high OK. No negative 6 volts atVHF HI terminal of tuner apply external -6 volts could tune in low band.Q102 VHF HI drive had no negative voltage at base troubleshooting found-12V rectifier being loaded. |