| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV20EXR10 | NO PICTURE SLEEP LIGHT ON, REPLACED C-500 | Set has high voltage. Sleep light is on, but set has nopicture. Found .7Vpp on pin 31 of IC-301 (should be 2 volts). ReplacedIC-500 and IC-301 still not working properly. Found shorted C-500. -HQ COMMENTS: When C-500 (on pin 1 of IC-500) shorts, ver | ||
| Sony | KV32XBR65 | PINCUSHION DISTORTION, COLD SOLDER JOINT D-512 | No horizontal pincushion correction occurring. As received,set had overheated and open L-501, open R-571 and shorted Q-505. Afterreplacing these, set would work normally for about 30 seconds. Q-505would short, R-571 would open sometimes L-501 would op | ||
| Sony | KV32XBR50 | PINCUSHION DISTORTION, COLDERED SOLDER JOINT D-512 | No horizontal pincushion correction occurring. As received,set had overheated and open L-501, open R-571 and shorted Q-505. Afterreplacing these, set would work normally for about 30 seconds. Q-505would short, R-571 would open sometimes L-501 would op | ||
| Sony | KV32XBR15 | PINCUSHION DISTORTION, REPLACED R571,L501,D512 COLD SOLDERED | No horizontal pincushion correction occurring. As received,set had overheated and open L-501, open R-571 and shorted Q-505. Afterreplacing these, set would work normally for about 30 seconds. Q-505would short, R-571 would open sometimes L-501 would op | ||
| Sony | KV27HSR10 | PINCUSHION DISTORTION, COLD SOLDER JOINT AT DAMPER CIRCUIT | No horizontal pincushion correction occurring. As received,set had overheated and open L-501, open R-571 and shorted Q-505. Afterreplacing these, set would work normally for about 30 seconds. Q-505would short, R-571 would open sometimes L-501 would op | ||
| Sony | KV27XBR50 | PINCUSHION DISTORTION, COLD SOLDER JOINT D-512 | No horizontal pincushion correction occurring. As received,set had overheated and open L-501, open R-571 and shorted Q-505. Afterreplacing these, set would work normally for about 30 seconds. Q-505would short, R-571 would open sometimes L-501 would op | ||
| Sony | XR7180 | ERRATIC TAPE FUNCTIONS AND DISPLAY, NO AUDIO | No display, no AM, no FM tape runs but just auto-reverses. | ||
| Sony | MDP210 | CORRECTION TO SERVICE MANUAL, RF PLL FREERUN ADJUSTMENT | On page 130 of the MDP-210 Service Manual, item 7-9-3, itlists the measurement point as IC-003 pin 70. IC-003 is an 8-pin chip. | ||
| Sony | SEQ555ES | WILL NOT POWER UP | Unit doesn't power up. Relay wouldn't close and there was noillumination on front panel. Standby supply working. Limited activity onkey matrix. Seemed micros were not communicating properly. | ||
| Sony | SLV575UC | WHITE STREAKS - DROP OUTS | The playback picture was full of white streaks and drop-outs.The problem was caused by the static brush on the top of the drum. Weused a little emery and a drop of lubricant to resolve the problem. Thereis no number in the service manual for this part. | ||
| Sony | CDPC5F | FAULTY PLAY | This unit would only play disc in No. one position. It wouldrecognize all discs, but when called to play another it always goes backto position one. | ||
| Sony | CCDF36 | DOES NOT REWIND WITH 120 MINUTE TAPES | Would rewind 60 min. tapes but not 120 min. tapes. Determinedthat slower rotation of reel tables with 120 min. tape let reel FG pulsesgo too low. | ||
| Sony | CDXR79 | NO FUNCTIONS, ALL LCD SEGMENTS ILLLUMINATED CONSTANTLY | Unit sent to Dallas SSC from authorized servicer who wasunable to cure a disc loading problem. When checked by Dallas technician,the unit was inoperative except for LCD segments being lit constantly. Ifthe deck is disconnected from the unit all other f | ||
| Sony | CDPC705 | TURNTABLE CONTINUALLY ROTATES | The turntable continually rotated. All front panel controlswere inoperative. We found the problem to be a poor connection at IC-302/pin 42. Resoldering resolved the problem. | ||
| Sony | SLV676UC | THREADING GUIDE CRACKED | The left plastic molded threading guide has a crack in it.This causes erratic/no threading. Since the threading guide is moldedonto the metal chassis, it is necessary to replace the chassis assembly.This is the fourth report I have received regarding th |