Dicas Reparação
Modelo - Chassis KV1945R
Pesquisa: KV1945R Enviar Dica Resolvida
Resultados 37
Pedir dica reparação
| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1945R | PICTURE DISTORTION, REPLACED HLC | Complaint about horiz. linearity specifically when writingtransversed screen. Replaced HLC with P/N 1-459-136 (HLC from 1930R).Problem resolved. Expect inductance of HLC (1-459-316) too low. Pleasesupply definite fix - have had 3 complaints to date. | ||
| Sony | KV1945RS | AUDIO HUM, REPLACED IC102 | Hum in sound, follows volume up/down. Scoped output ofIC102, looks like 60Hz hum. | ||
| Sony | KV1945RS | PICTURE DISTORTION, REPLACED C544 | Severe pincushion problem, pin control has no control. Baseof Q503 was negative instead of 2V. Found signal on base has a lot ofspikes, which could come only from one point, the flyback. C544 was opencausing no filtering. | ||
| Sony | KV1945R | NO PICTURE, REPLACED SHORTED Q006 AND Q008 ON MD BOARD | This set had no VC voltage and band selection voltages werewrong at tuner. | ||
| Sony | KV1945R | SHUT DOWN, TRIMMED R563 | This unit intermittently shuts off by itself. | ||
| Sony | KV1945RS | POOR REMOTE OPERATION, REPLACED IC1, CX-786 IN COMMANDER | Poor sensitivity with remote approx. 6 feet. | ||
| Sony | KV1945RS | SHUT DOWN, SELECTED R563 | This unit intermittently shuts off, sometimes twice a week,sometimes once. Voltage on Pin 12 was 5.3V making it too near thethreshold level of 5.6V, changing R563 to satisfy the procedure in manualresults in a 15K resistor which was half of the original | ||
| Sony | KV1945R | NO COLOR, REPLACED IC501 | No color. Found no pulse at Pin 20 of IC301. Traced theproblem to Pin 22 of IC501 where I found no sync out. | ||
| Sony | KV1945RS | SNOW PICTURE, REPLACED PRESCALER | Snow on all channels. No output from prescaler. | ||
| Sony | KV1945R | SOUND AND PICTURE DISTORTION, REPLACED IC005 | Volume and picture levels go down. One could adjust volumeand picture levels in UP mode, but a few seconds later, the levels wouldgo down to minimum. | ||
| Sony | KV1945R | INTERMITTENT ON/OFF, LEAKY D026 | Intermittent on/off. Last channel memory is off. When turnmaster switch on, TV comes on intermittently. IC006 Pin 11 is low (2.4V)should be 5.1V. D026 zener didoe was leaky. | ||
| Sony | KV1945R | INCORRECT TUNING FUNCTION, REPLACED IC004 | Only numbers 1 or 2 can be addressed on TV by hand unit.Operation on channel selection manually is OK. I found Pin 28 of IC004has 10VDC on it at all times. Waveforms on Pin 37 were normal but theamplitude of waveforms at Pin 14 were very low with all n | ||
| Sony | KV1945R | DEAD, REPLACED FBT AND OTHERS | Set had a bad flyback causing multiple problems such asshorted horizontal output transistor and B+ regulator. | ||
| Sony | KV1945R | DIM PICTURE, REPLACED R555 AND D513 | Dim picture. Found no 950V on C board, R555 open and carbonpath between Pins 1 and 2 in CRT socket. | ||
| Sony | KV1945R | SHUT DOWN, REPLACED RELAY RL001 | Set plays several hours, then shuts off. Remote control ormanual on-off buttons would not turn the set back on for several seconds.Relay would click every time the set on/off button was pushed. |