Dicas Reparação
Modelo - Chassis KV2145R
Pesquisa: KV2145R Enviar Dica Resolvida
Resultados 22
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2145R | MISSING PART NO, D512 8-719-305-15 | PC board silkscreening has two reference No.s D512, one isshown on mounting diagram in S/M. However there is no part inserted.The other D512 is inserted between C533 and C534 (see attached) andappears to be a D177 case design. An earlier run (S/N 24852 | ||
| Sony | KV2145R | FOLDOVER AT THE TOP OF THE PICTURE, R520 DECREASED IN VALUE | After warm-up, pix would start to pull down with slight fold-over at top of pix and R520 decreased to 7.8k Ohms. | ||
| Sony | KV2145R | WEAK VIDEO AND POOR SYNC, LEAKY C208 | This unit displayed weak video and poor sync. We found C208of IC201 Pin 3 to be leaky. | ||
| Sony | KV2145R | NO V DEFLECTION, REPLACE Q502/503 & R520/R555 | Vertical problem. | ||
| Sony | KV2145R | PIC FOLDS OVER AT TOP, REPLACED D504/505/506 | After two hours, picture folds over at top. Replace 10 kohmresistor (R520) as per FPR of Feb. 1984 but problem still occurred. | ||
| Sony | KV2145R | PIC FOLDS OVER AT TOP, R520 DECREASED IN VALUE | Unit had 1/2 inch of fold over top of screen. Found R520reading 8.1K (should be 10K), upsetting bias on vertical outputs. | ||
| Sony | KV2145R | RELAY CHATTERING, RESOLDER D602 | Power relay RL001 would not stay engaged when power on buttonwas depressed. The new MF board didn't cure the chattering relay problem. | ||
| Sony | KV2145R | WHITE H BAND ON THE SCREEN, R520 INCREASED IN VALUE | After ten minutes of operation, this receiver displayed aone-half inch white horizontal band at the top of the screen. Verticalsize and linearity were not affected. | ||
| Sony | KV2145R | SHUT DOWN, REPLACED HVR | This unit had a shut down condition which occurred everycouple of hours. We found the HVR ass'y to be defective. It was crackedat the base. | ||
| Sony | KV2145R | RETRACE LINES ON THE SCREEN, REPLACE IC502 | Set had 6 or 7 retrace lines at top of the screen. I foundthat by cooling IC502 the lines disappeared. | ||
| Sony | KV2145R | INTERMITTENT CHANNEL CHANGE BY ITSELF, Q007 | Intermittently self initiates rapid channel changing. | ||
| Sony | KV2145R | DEAD, FUSE & DAMPER DIODE | Unit came in with blown DC fuse and a shorted damper diodemounted on the conductor side of board, cathode connected to cathode ofD501 and anode to ground. This is a production mod. and no informationexists as to its type or part number. As it resembles | ||
| Sony | KV2145R | NO PICTURE, RESOLDER C534 | Set would blow the horiz. output, at low voltage. I noticedH. frequency doubled. Found C534 not grounded. | ||
| 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 | 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 |