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 | KPR4600B | No picture, replaced q-956 | Unit had no picture. sound would vary up and down. found lottransistor shorted. | ||
| SONY | KP5040 | Vertical noise bar, connection change on r3383 and r3384 | Unit had dark vertical line in the center of the screen, onlow channels. disconnected resistors r3383 and r3384 where they jointogether and connected them to pin 2 of ba-9 connector. | ||
| SONY | KP4000 | Poor on no sound | This unit powered up but there was poor or no sound/picture.we found r107 on the q board to be defective. | ||
| SONY | FD30A | Poor focus, replaced crt | This unit had poor focus. the tube had internal shortputting 500 volts on the focus pin. | ||
| SONY | KX1901 | Intermittent shut down | This unit intermittently shut down. we found the lead fromthe flyback to the hvr control to have a poor connection where the wireconnects to the metal retaining cap. the resulting arcing caused theunit to shut down. it was not possible to properly rep | ||
| SONY | KX1901 | Weak sound on left channel | Left channel output is lower than right channel. | ||
| SONY | KV4100 | Mechanical damage | Flywheel gear broken. at least 25 units are due intohollywood fsc with same complaint. no tape deck operation. so far 5units repaired. four out of five had defective gear. gear must bestrengthened. | ||
| SONY | KV2670R | No raster, r-526 open, c-527 open and q-504 leaky | This unit had no 1000 volt g2 screen voltage. r526 was open.c527 was blown in half. d508 was changed for safety. q504 was leaky. | ||
| SONY | KV2649RX | Poor focus on the screen, replace t861 | Set had poor focus on right side of screen (about 4 inches).by tapping t-861, the focus would get worse or better. | ||
| SONY | KV2649RX | No function, replaced d021 | Set cannot be turned off, except by the master switch.channel up/down, volume up/down, picture, color etc. do not work. foundd021 leaky. | ||
| SONY | KV2602 | Vertical distortion, replace c516 | This unit would play for approx. 20 minutes with no problem.after the circuit had sufficiently heated up the vertical would start tocollapse until there was only about 1/2 inches of deflection. we foundc516 to be defective. monitoring the resistance ac | ||
| SONY | KV1975R | No vip function, replace ic103 | The above 6 units came randomly in a period of 2 weeks from2 servicers (all in the city), for no vip function. two could be resetfor vip, the rest remain with no v/p function. acquired a few new chipsand installed with very good results (cx-520-111n). | ||
| SONY | KV1913 | No sound | No sound, but picture ok. | ||
| SONY | KV1554RWP | Intermittent on/off | Will come on intermittently. | ||
| SONY | KV1354R | Dead, replaced ic-003 | This unit would not turn on and all other functions wereinoperative. we found ic-003/pll controller to be defective. | ||
| SONY | KV1221 | No tuner lock in, replaced n2503 | This unit worked fine except that intermittently the tunerwould not lock in on the c position. when the n position was selectedduring the failure mode then the c channel information would be present.we found the neon lamp n2503 to be the cause of the pr | ||
| SONY | KPR4600B | No picture | Set would lose display and scan channels. no picture.traced problem to open t502. | ||
| SONY | KP7220 | Erratic tuning and distorted picture, replaced r547, r546 | Picture is dark and shrunken in on sides, will not staytuned on channel selected. tuning is erratic. | ||
| SONY | KX2501A | No sync, remove copper insert from u1001 | There have been several units brought into the fsc for repairwith the symptom of no sync. the problem has been traced to theprotective insert installed on the u1001 input terminal. this plug shortstogether pins 1 and 18. this turns on q1329/sync switc | ||
| SONY | KV2675R | Snowy picture, q-201 uhf amp on "a" board | Picture was snowy on both vhf/uhf. |