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 | KV2647RX | Dark picture of cable channels | Dark picture on only the cable channels that were scrambled.the scrambler was made by octagon regency. the cable system was daviscommunity cable co. in davis, calif. the problem with the cable scrambledchannels was with the horizontal sync. | ||
| SONY | KV2647RX | Unlock signal on cable channel, replace c208 and adj t203 | Customer on cable unable to lock in on hbo channel 18. | ||
| SONY | KV2647R | No display timer function, ac wires to mf-7 reversed | Display time would be on but the time would not change whenthe set was off. when set is turned on, the clock would work until theset was shut off. | ||
| SONY | KV1924 | Weak crt | This unit looked like it had a weak crt. | ||
| SONY | KV1714 | No hv sync, lack of brightness | 1) no sync vertical 2) vertical roll 3) horizontal out offrequency 4) picture is too dark. | ||
| SONY | KV1545R | Poor remote sensitivity, replaced l1 | Unit had poor remote sensitivity (4 inches). found coil l1shorted. resistance should be 22Ω, it was 2Ω. | ||
| SONY | KV2647RX | No picture on cable, add resistor with r054 | Set will not work on cable (hrc system). one fix was to puta 100Ω resistor across r054. this seemed to work in the past. on thenew sets kv-2647rx this fix does not work in all cases. the 100Ω willcause the set to hunt shift back and forth. wha | ||
| SONY | KV2647RX | Jail bars, add ground wire | Jail bars in picture. this is the 2nd 2647rx customer hashad. customer claimed jail bars on this unit took 2 weeks to develop.tried tuner, prescaler, d250 all zero effect. | ||
| SONY | KV2647RX | Picture distortion, replace r557 | When set was first turned on, picture lacked about 4 inchesof vert sweep at bottom and slight compression at top. after about 20seconds, picture and sould would go out. inspection revealed the 15vline to the 12v regulator was only 9vdc. the other 15v | ||
| SONY | KV1954R | Need p/n for uhl switches, part of rv001 1-228-943-00 | I need the p/n for the u-h-l switches on m-2 board. -hq comments: the switches in question are part of rv001 volume block,preset (p/n 1-228-943-00). the whole block has to be replaced. | ||
| SONY | KX2501A | Picture fade in and out, replaced q1320 | When set would get warm, the video information would fade inand out very slowly. by keeping q320 turned off, the video would notfade. everytime the video started to fade, the base of q320 would go lowand it would turn on. found q1302 on bd board was l | ||
| SONY | KV2680R | No sound, replace ic-1106 on x board | This unit had no sound. when off station, a rushing soundwas present, however, when receiving a station the audio was completelymuted. we found ic1106 to be defective. | ||
| SONY | KV2675R | Aft osc, cold solder on aft coil | Channel would oscillate in and out of frequency about 1/2cycle per second (vc voltage was varying at the same rate). | ||
| SONY | KV2670R | Dead, replaced crt, h out and r-608 | The set went dead and smoke rolled out the back. we foundr608 to be the cause of the smoke. furthermore, q504 was shorted as wasthe crt. the strange part of this failure is that both fuses were intact. | ||
| SONY | KV2649RX | Immediate shut down, replaced hvr block | Set would come on and immediately shut off. | ||
| SONY | KV2649RX | Dead, replaced h out transistor | Set came in dead. found horizontal output shorted. | ||
| SONY | KX2501 | Bullets in picture, grounded crt pin 10 | The unit had bullets on the screen even with no video input.it appeared to be caused by some kind of corona discharge. furtherinvestigation revealed pin 10 on the crt to have a charge. this pin isnot connected to anything on the crt board. grounding t | ||
| SONY | KV1948R | Picture distortion, replace c654 | The picture was pulled in on all sides and was snowy. wefound all b+ power supplys to be low. the 135v power supply was about 103v. regula-tion was poor. increasing the line voltage to 140vac resulted in normaloperation. we found c654 which is across t651/pot t | ||
| SONY | KV1941R | Video drift, leaky d2213 | On low channels video would drift. | ||
| SONY | KP5040 | Incorrect mechanical operation, adjusted gear ass'yg | New arm assembly was installed. door would not close all theway on right side. found large gear off one tooth on gear strap inassembly. |