Dicas Reparação
Modelo - Chassis KV1543R
Pesquisa: KV1543R
Resultados 11
Resultados 11
| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1543R | NO VOLUME OPERATION AFTER WARMING, REPLACED C001 | Customer complained of volume not working after warming (2-4hours). Found 12V supply to IC-001 pulled down to 8.5V after warmup.Supplied 12V externally to IC-001 and volume worked ok. Pulledconnector to detector PCP (M2-3) and volume worked ok again. | ||
| Sony | KV1543R | INCORRECT TUNING OPERATION, OPEN GROUND D039/R055 | When set was turned on, it was locked into address position Aand would not tune out of this position. Any movement of M2 board wouldclear the problem. I then noticed the junction of D039 and R055 which aregrounded at a common point of the PC board, was | ||
| Sony | KV1543R | INTERMITTENT COLOR FADE, REPLACED C308 | Intermittent color fading. This problem was highly inter-mittent, sometimes taking weeks to manifest itself. The color would fadeout completely. Chroma input to IC301 Pin 13 would not change at allduring fade outs. DC level was varying slightly, betw | ||
| Sony | KV1543R | INTERMITTENT REMOTE OPERATION, REPLACED C005 | Remote commander operative only about 10% of time, mostfunctions completely inoperative. With scope probe at TP 52 M-2 boardabout 5Vpp random noise present and remote control signal distortedwhen actuated. | ||
| Sony | KV1543R | NO TUNING MEMORY, REPLACED C047 | Customer pulled AC plug from wall outlet during electricalstorms, had to reprogram tuner (lost its memory). C047 a 100pF capacitoron the WRITE/ERASE line (Pin 6 of IC034, CX761) defective allowing pinto remain high after AC disconnection. | ||
| Sony | KV1543R | CHANNEL INDICATORS NOT LIT, LEAKAGE BETWEEN IC032/PIN 1 & 20 | Unit would not come on with all channel indicators lit.Unable to select channels. Once in a while unit would function properly. | ||
| Sony | KV1543R | NO STATION SELECTION, REPLACED IC032 | Stations wouldn't select and sound would turn up but wouldn'tgo down. | ||
| Sony | KV1543R | NEON DOES NOT FUNCTION, SEE BELOW | No function of neon bulb (NL15) on remote or manual commands.All other functions work. Found only 75VAC at junction of R018 and R017to ground. | ||
| Sony | KV1543R | CHANNEL SEARCH DOESN'T STOP,REPLACED PARTS BELOW | All indications were that set would tune properly but wouldovershoot each channel. Result was unstable sync and in general poorpicture quality. Pin 10, IC201 (CX555) AFT was reading approx. 9V vs2.5V. At Pin 2, IC033 (CX804) was reading approx. 10V. | ||
| Sony | KV1543R | NO REMOTE FUNCTION, REPLACED IC001 | Remote does not work, manual OK. | ||
| Sony | KV1543R | INTERMITTENT SHUT DOWN, REPLACED R532 | The set would intermittently shut down. |