Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KVD2512 | Nicam int reverts to mono sound | Nicam buffer tr Q181 JC501 or 2SC2785 | ||
| Sony | KVC29 | No pic - sound, HT, crt htrs all ok | R807 burn up & change diode in series with it (causing leakage) | ||
| Sony | KVC252ID | Stuck on chan 00 | Replace EEPROM IC005 SDA 2546. (24C08 is the same.) | ||
| 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. | ||
| 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. | ||
| Sony | KVB2923E | No pic or LED at sw on - EHT present. On entering a command LED blinks rapidly 3/4 times | Possible CRT low emiss - try decreasing value CRT heater ballast res to check | ||
| Sony | KVA2942U | Vol intermittent | R627 27R hi res | ||
| Sony | KVA2942S | FOR VERTICAL SHIFT AND HEIGHT PROBLEMS | ENTER SERVICE MODE AND MAKE SURE "GEOMETRY SET" IS OFF | ||
| Sony | KVA2932U | Garbled Txt chars briefly at sw on - no menu/text | X2001 on M board | ||
| Sony | KVA2922 | Tripping | C605 220µ in psu low cap | ||
| Sony | KVA2542 | DEAD | CHECK CIRCUIT PROTECTORS PS682 AND PS681 | ||
| Sony | KV36FS76U | Sleep timer operates 2 mins too early | Mod req - IC107 pt no 680230304 | ||
| Sony | KV3410B | BU508 blown - getting hot. | Check value from supply control ( HT? ) pot to 135v rail , gone high. | ||
| Sony | KV32WS3U | Faint pic, OSG & sound - menu functs work but no stereo option | EEPROM corrupted - reset data & mod (sorry no info on doing this!) | ||
| Sony | KV32DX30U | When replacing LOPTx | Don't use pt no listed in manual - wrecks crt - use Part No 145330841. |