| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | MVCC1 | NO POWER, REPLACED Q310 ON MA-1 BOARD | No power. | ||
| Sony | KV27HSR10 | COLD SOLDER CONNECTIONS ON T-501 | Unit dead, no horizontal drive pulse. | ||
| Sony | CCDF35 | WILL NOT EJECT TAPES | Will not eject cassettes. | ||
| Sony | ITA750 | NO TONE DIALING AND ALWAYS PICKS UP ON ONE RING | No tone dialing and always picks up on one ring. | ||
| Sony | TAM50 | UNIT WILL NOT SET UP TO TAKE MESSAGES - GET ERROR BEEPS | Unit will not set up to take messages when Answer button ispressed. Sometimes you can record the OGM, but when the unit tries torewind the tape, you get the error beeps. | ||
| Sony | TAM30 | UNIT WILL NOT SET UP TO TAKE MESSAGES - GET ERROR BEEPS | Unit will not set up to take messages when Answer button ispressed. Sometimes you can record the OGM, but when the unit tries torewind the tape, you get the error beeps. | ||
| Sony | CDXR77 | CD ONLY PLAYS WHEN UNIT IS TURNED UPSIDE DOWN | CD only plays when unit is turned upside down. | ||
| Sony | STRAV1020 | SILKSCREEN FOR IC-251 PRINTED ON BOARD WRONG | Silkscreen printed on video board for IC-251 on video board isbackwards (ie. 180 degrees). Pin 1 on IC actually corresponds to pin 9on the board. | ||
| Sony | PSLX520 | INTERMITTENT SPEED | After refering to SDIS, and noting a similar problem with thiscircuit I checked R-107 and R-106. R-106 was a 390K resistor R-107 was a1.6K resistor. | ||
| Sony | SLV757 | DOES NOT RESPOND TO CONTROLS | Won't eject, power down. | ||
| Sony | STRAV1020 | PROTECTION CIRCUIT ACTIVATED | Protection flashes on front display. Q-719 (relay drive)shuts off de-energizing RY-701. Thus opening the signal path to speakers. | ||
| Sony | CFDD73 | INTERMITTENT SKIPPING / TRACK JUMPING | Unit would intermittently skip and sometimes would not AMS.Upon monitoring sled motor drive voltage, found it to be increasing.Normally, it is about 0.7V. | ||
| Sony | CFD455 | INTERMITTENT SKIPPING / TRACK JUMPING | Unit would intermittently skip and sometimes would not AMS.Upon monitoring sled motor drive voltage, found it to be increasing.Normally, it is about 0.7V. | ||
| Sony | CFD454 | INTERMITTENT SKIPPING / TRACK JUMPING | Unit would intermittently skip and sometimes would not AMS.Upon monitoring sled motor drive voltage, found it to be increasing.Normally, it is about 0.7V. | ||
| Sony | XR6180 | TAPE DECK WILL NOT FUNCTION OR WILL FUNCTION INCORRECTLY | Have seen several units so far where both Q-405 and the AMSplunger were defective. The plunger was actually melted. I am unsurewhether the plunger or the drive transistor originally caused theproblem. |