Sony Repair Tips
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Results: 20100
Results: 20100
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| SONY |
SPPA60
|
No power h.s. - replace ic504, p/n 8-759-511-37. | No power h.s. there was no voltage on pin 3 of the voltagedetect ic504. i noticed that ic504/pin 3 was cold soldered. | ||
| SONY |
SPPA40
|
Wrong cut off point of spp-a40 serial #'s for replacing ic3 | Telephone products service bulletin no. 88r1 indicates thatunits with serial numbers 118059 and lower have the old version micro,which needs to be replaced in the base. i had a unit with serialnumber 124030 which had the old micro in it (1472), not 1472a | ||
| SONY |
SPPA40
|
New microprocessors not working | New microprocessors do not work. reinstall old micro and unitworks ok. see fpr o2740 already on this subject. about 5-6 months ago wehad a batch of ic's that were programmed wrong. the next batch we receivedworked ok. today i have tried two ic's that | ||
| SONY |
SPPA40
|
Defective message display - resolder or replace ic301. | Defective message display. the #18 was appearing on messagedisplay. noticed several pins cold soldered on ic301. reflowed ic301 andunit fine. | ||
| SONY |
SPPA40
|
No power handset - replace x502, p/n 1-579-446-11. | No power in handset. x502 was not transmitting at 3.58 mhz,nor was it getting 1.3v on pin 40 or 1.6 volts on pin 41 of ic505. | ||
| SONY |
SPPA20
|
Takes first message, msg counter goes blank, won't answer | Unit receives the first message, then the message counter goesblank, and the unit will not answer further calls. traced the cause tothe spring that restores the lever that engages the white cam gear. itappears to have enough tension to overcome the sol | ||
| SONY |
SPPA20
|
No mech. motion - reseat wires of magnetic head. | A unit has been replaced with a good or new deck, still hasintermittent play, rew and ff function or error display. wires atmagnetic head (rec/pb/erase) are seated by the plastic cover of basekeyboard, and are too tight, interfering with the movement o | ||
| SONY |
SPPA20
|
No power handset - replace x502, p/n 1-579-446-11. | No oscillation or wave form (3.58mhz) at ic505/pins 41 and 40.i checked dc voltage at ic505/pin 41 = 1.6v and pin 40 = 1.3v. found x502crystal open. | ||
| SONY |
SPPA20
|
No dial tone (when switched pulse to tone at base in flash m | Will not switch pulse to tone mode in flash function. whenh/s is on. it works with ic3 part # uc1469 (base) not with uc1469a. inuc1469a, 2 pulses are missing at clock output ic3/pin 43, which goes toic301/pin3 and ic302/pin 3 of serial/parallel ics. t | ||
| SONY |
SPP75
|
Inadequate charging of handset battery | Units come in with complaint of short battery life, orincomplete charging. traced cause to poor connections between solder padson mic board and charging terminals. | ||
| SONY |
ITD250
|
Speaker phone cuts out - resolder c344 | When using speaker phone it would intermittently cut out. | ||
| SONY |
CMH333
|
No power - sw3 broken off board | No power. found sw3 broken off board, pulling up traces. | ||
| SONY |
CMH333
|
No power on battery - clean battery switch (j1 connector) | Can not turn the unit on with battery. | ||
| SONY |
GV200
|
No color on playback but, tv is ok/replace x701 | Will not playback in color only on tv and input mode is ok. | ||
| SONY |
GV200
|
Playback jumps on self rec. lp/replace drum assy | Unit will playback pre-recorded sp and lp with no prob. willplayback self-recorded sp with no prob. but will not playbackself-recorded lp. pix jumps. | ||
| SONY |
TCWR570
|
Contin. flshng pause light, no trnsprt cntrl - resolder t701 | When turned on, the unit flashed the pause light, and notransport functions were available. the +/-7v lines were within 10% ofspec. the micro had clock, reset, and the correct program number. noinputs were inhibiting operation. we replaced the micro t | ||
| SONY |
TCWR511
|
Contin. flashing pause light, no trnsprt ctrl - resolder t701 | When turned on, the unit flashed the pause light, and notransport functions were available. the +/-7v lines were within 10% ofspec. the micro had clock, reset, and the correct program number. noinputs were inhibiting operation. we replaced the micro t | ||
| SONY |
TCW411
|
Contin. flshng pause light, no trnsprt cntrl - resolder t701 | When turned on, the unit flashed the pause light, and notransport functions were available. the +/-7v lines were within 10% ofspec. the micro had clock, reset, and the correct program number. noinputs were inhibiting operation. we replaced the micro t | ||
| SONY |
TCW370
|
Contin. flashing pause light, no trnsprt ctrl - resolder t701 | When turned on, the unit flashed the pause light, and notransport functions were available. the +/-7v lines were within 10% ofspec. the micro had clock, reset, and the correct program number. noinputs were inhibiting operation. we replaced the micro t | ||
| SONY |
TCRX79ES
|
Loading problems, after replacement of capstan mtr - ref571 too tight | After replacement of capstan motor, unit fails to load. |