| Make | Model | Problem | Solution | Date |
| | | |
| Found: 5
|
| Sony | KV-C25/27 | Memory inoperative. Memory chip replacement failed. | Check that pin 2 of memory chip is at -30 volts. If not check D809, R830, L807 and the -30V smoothing cap. In two cases, L807 was found to be open cct. | 14-09-04 |
| Sony | KV-C25/27 | Starts on Pr0 and every time Pr+ is depressed, it goes subsequently to Pr8, Pr16,Pr24 and to Pr0. | Change D008 5Vzener located near M58655 memory chip. | 14-09-04 |
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|
| Sony | KV-C25/C27 | All the minus ( - ) keys on keyboard inoperative. ( vol-, prog-, search- etc. ) | Check/repalace Microcontroller IC. | 14-09-04 |
| Sony | KVC252ID | Stuck on chan 00 | Replace EEPROM IC005 SDA 2546. (24C08 is the same.) | 14-09-04 |
| Sony | KVC29 | No pic - sound, HT, crt htrs all ok | R807 burn up & change diode in series with it (causing leakage) | 14-09-04 |