| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV5000 | NO OPERATION WITH AC | Set would not work on AC. All DC checks which we could thinkwere performed. Power supply simply would not start. Found waveform 27would appear for just an instant and die away. Transformer T606 checkedgood so C611 must be culprit. | ||
| Sony | KV3000R | DOOR JAMMING | Left side door was found to be inoperative when inspected bydealer. Found mounting bolts loose on motor assembly. Motor ass'ydrive gear could not engage in door drive track. Bold heads had pulledinto soft wood due to shipping and handling jolt. | ||
| Sony | KV2648R | NO PICTURE, REPLACED H OUT TRANSISTOR | Receiver had no B+ voltages. All voltages and waveforms atprimary side of T602, F board, were all right. Resistance check of 135Vlines was 200 ohms to ground. Horizontal output transistor was shorted. | ||
| Sony | KV2647R | NO VERTICAL SYNC DURING CHANGING CH., WRONG VALUE R580 | Vertical sync loss when changing channels, OK when scenefades out before a commercial. | ||
| Sony | KV2645RS | LOW BRIGHTNESS, REPLACED R751 | Low brightness, like weak CRT. | ||
| Sony | KV2645RS | CHANNEL WOULD NOT LOCK, ADJ T205 AFT COIL | Would not lock on to cable channel #14. Cable companyrunning mid-band channels 1.2MHz to 1.9MHz below accepted centerfrequency. | ||
| Sony | KV2645RS | INCORRECT PICTURE POSITION, ADD CAP | Unable to center picture horizontal. Picture off to the leftby 1/2 inch with TAP plug into RIGHT position. Servicer changed yoke,diodes D519, D518 and resistors around center area. I changed severalcapacitors. Customer has had this problem from the f | ||
| Sony | KV1946R | PICTURE DISTORTION, R605 OPEN | Insufficient width and no color, B+ 110V not regulating,R605 open. | ||
| Sony | KV1945RS | AUDIO HUM, REPLACED IC102 | Hum in sound, follows volume up/down. Scoped output ofIC102, looks like 60Hz hum. | ||
| Sony | KV1515 | INCORRECT TUNING OPERATION | Could tune channels 2 to 9 only. VC on this unit cannot gobeyond 15V and band selector switch have no effect, station is tunedregardless of switch position. This problem was caused by a leakyS075 causing a high (3.2V) on Q104. | ||
| Sony | KV1515 | PICTURE DISTORTION | Intermittent vertical collapse, found C508 leaky. | ||
| Sony | KV1515 | NO LOW VHF | This unit could tune only H. VHF and UHF band. Found Q103collector to emitter leaky. | ||
| Sony | KV1515 | INCORRECT TUNING OPERATION | Unable to tune position #1 to the correct channel on any ofthe 3 band selections. All other positions function normally. Foundthat moving band switch at position 13 while in position 1 viewing modewould cause deteriorating effect on position 1 tuning, | ||
| Sony | KV1515 | NO LOW VHF | Set would not tune above channel 2, traced to leaky VC drivertransistor. | ||
| Sony | KV1217 | VERTICAL FOLDOVER, REPLACED C524 | Vertical foldover with blanking spot on right upper corner andjittery picture. Found C524 installed backwards during manufacturing. |