Sony TV Repair: Common Faults and Solutions.
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Results: 20067
Results: 20067
Sony Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | KV2602 | Audio buzz on scrambled stations, adj sif t204 and t205 | Audio buzz on scrambled stations only (hbo & cinemax). | ||
| SONY | KV2145R | Pic folds over at top, r520 decreased in value | Unit had 1/2 inch of fold over top of screen. found r520reading 8.1k (should be 10k), upsetting bias on vertical outputs. | ||
| SONY | KV2145R | Relay chattering, resolder d602 | Power relay rl001 would not stay engaged when power on buttonwas depressed. the new mf board didn't cure the chattering relay problem. | ||
| SONY | KV1953RS | Dark picture, replace c548 | Dark picture, sometimes blowing fuse and regulator. fivecases have come to our attention of this problem, which is caused by c548being shorted or leaky. attached are samples for evaluation. | ||
| SONY | KV1952RX | Dark picture, replace c530 and r538 | Dark picture gave impression of insufficient high voltage.in addition the red convergence was off slightly (like h. stat controlslightly misadjusted). | ||
| SONY | KV1948R | Picture distortion, c654 open | Insufficient width and height, low 135v at l651. | ||
| SONY | KV1916 | Immediate shut down | On turn on, unit would immediately shut down. found r528opened. | ||
| SONY | KV1911 | Severe pin cushion | Severe pin cushion, pulled in 2-3 inches on each side.checking 15 volt line found a negative h pulse on the line. found c810to be open. | ||
| SONY | KV1747R | Sets will not lock on cable channels | Set will not lock on cable channels. usually the 47 modelsand models with a similar chassis. i tried reducing the value of c208but this made the problem worse. we tried increasing the values of thiscap and found that the sets would perform properly wi | ||
| SONY | KV1747R | Channel lock | When changing channels, up/down with remote, unit would lockon channel 8 for approx. 8 to 10 seconds. unit would scan up/down allother channels with no problem. | ||
| SONY | KV1547R | Picture blanks | Set would play 15 mins., then would start blanking in and out.vertical would then start shrinking and soon would collapse. | ||
| SONY | KV1520R | No volume control | This unit had no volume up. we found d1117 to be ever soslightly leaky. | ||
| SONY | KV1355R | Unit goes shut down mode, crack on board | Any movement of cabinet would cause the set to go intoshutdown mode. i defeated the input to the shutdown circuit, pin 17 ofic501 to prevent shutdown in order to isolate the problem. the voltageat pin 16 of ic501 would increase when the problem occurre | ||
| SONY | KV1221R | Intermittent turn off, replaced ic001 | This unit would intermittently turn off. we found the remotedecoder ic (ic001) to be thermally sensitive. | ||
| SONY | KP5040 | Noise bar in the center of othe screen, connection change | A vertical bar appeared in the center of the picture whenviewing a normal program. investigation of the circuit revealed that thelot transformer pulse seen at pin 1, of t504 on the e board wasdisplaced from its normal in phase relationship to the flybac | ||
| SONY | KP5040 | Mechanical incorrect operation, replaced ic6501 | Drive voltage to the mirror door motor would not be removedonce the door had reached its end of travel. instead, the drive motorwould continue to ratchet. | ||
| SONY | FD20A | Intermittent poor focus, replaced crt | This unit had intermittent focus. the focus voltage wouldgo up to 900 volts. | ||
| SONY | KX2501 | Pic distortion on ch 7, add ground between "c" and chassis | Oscillation left side of crt, 1 wide, appeared on channel#7 only. | ||
| SONY | KV8100 | Unit shuts down | When turned on, unit would shut down. isolated problem tothe 22 volt line. it was reading 27 volts. found q602 regulatordriver leaky. | ||
| SONY | KV3000R | Unit could not be powered on | Unit could not be powered on. inspection revealed lack of12 volt dc to control circuits. |