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Modelo - Chassis 14
Pesquisa: 14 Enviar Dica Resolvida
Resultados 8053
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2145R | SHUT DOWN, LEAKY Q881 | Set would shut off once or twice a week. Problem wasisolated to Hi-voltage shut down CRT. Found Q881 leaky. With a newtransistor shut down voltage increased by 112V, changed dividerresistor for correct voltage. | ||
| Sony | KV1914 | COLOR DISTORTION | New picture tube would go soft on one of the colors - firstwas the red, second time the blue. Found filament voltage from theflyback incorrect. Peak to peak was 30V S/B 22, also ringing. | ||
| Sony | KV2141R | SET LOCKS ON CH2, SHORTED Q2201 | Display says channel 2, no matter which channel selected,tuning OK. | ||
| Sony | KV1914 | NO SOUND | No sound. Voltage at Pin 21 of IC201 was low, should havebeen 5.8 VDC, was only 4.0 VDC. | ||
| Sony | KV2145R | SET LOCKS ON CH 88, REPLACED CH INDICATOR ND3101 | Set was locked onto channel 88, unable to clear or change.Found pulse out of IC001 on MF board loaded down. Traced problem tochannel indicator display ND3101 on TA board. Pin 3 on display isshorting to something inside display loading down Pin 40 on IC | ||
| Sony | KV2141R | NO PICTURE, LEAKY D511 ZENER | Unit completely out of horizontal frequency. At Pin 8 ofIC501 the DC voltage reads 4V instead of 10V. Trouble traced back toleaky D511 (RD15E). | ||
| Sony | KV1914 | NO UHF | No UHF. Found B-E of Q103 shorted. | ||
| Sony | KV1214 | PICTURE INTERFERENCE | Interference in shape of two vertical lines on left side ofscreen. Waveform at input to blanker stage was distorted. | ||
| Sony | KV2145R | DARK PICTURE, RESOLDER R054 | Raster goes dark with sound bars, sound normal, then normalpicture jumps back. Found R054 mounted on the print side, cold soldered. | ||
| Sony | KV2145R | H TEARING & FLASHING, RESOLDER ANODE LEAD | R067 on MF board overheats. Noticed intermittent horizontaltearing and flashing across screen. Found anode lead which is a plug intype, was not making firm contact. | ||
| Sony | KV2145R | NO VIDEO/SOUND, REPLACED PRESCALER | No video - no sound. | ||
| Sony | KV2145R | DARK PICTURE, REPLACED BRT CONTROL | Unit loses brightness (goes black) intermittently. VoltageOK, TP49 goes low whenever problem occurred. Found brightness controlshorting to its case. | ||
| Sony | KV2145R | NO PICTURE, FBT | Set kept shorting out the horizontal output transistor. | ||
| Sony | KV2145R | NO SOUND, BROKEN LEAD ON OUTPUT TRANSFORMER | No sound. Inspection revealed broken wire from secondaryof sound output transformer to solder lug, right at the lug. | ||
| Sony | KV2145R | NO VHF, BT981 PRESCALER | No VHF low and high band, very intermittent. |