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 | KX2501 | Dots in picture, replaced crt | With no input signal, even with the brightness and picturecontrols completely off the crt exhibits about 12 white dots distributedin a random pattern over the entire face of the crt. these dots willrandomly burst in a sort of fireworks pattern, dispersi | ||
| SONY | KX2501 | Unable to control contrast, replaced c1568 | Unable to control contrast. using pix control found abl #3transistor reading 3.8vdc, should be 25.2vdc, isolated problem to c1568.capacitor was read 200Ω. | ||
| SONY | KX2501 | No picture, replaced r761b | Lose video immediately after turn on. traced video info. upto the base of q704 and no further on c board. voltage on collector ofq713 was about 7v dc and it would not allow q707 to conduct. replacingq713 would allow video to be present about 20 second | ||
| SONY | KV4100 | Parts availability | Referring to page 74 of the s/m, servicer claims that mountedon the capstan shaft above the flywheel there is a plastic gear which isnot shown in the s/m. my manual does not show such a gear either. -hq comments: the plastic gear in question is a part | ||
| SONY | KV2648R | Dead, replace r616 and q603 | Set would operate for approx. one to two min. it would thenblow the converter out in power supply and the line fuse. found r616open and q603 leaky from collector to emitter. | ||
| SONY | KV2648R | Picture distortion, resoldered 135v rectifier | Picture would expand and contract with the setting of thepicture control. there was also video noise in the picture and a highpitched faint arcing sound. | ||
| SONY | KV2647R | Snowy picture, replace d012 | Unit displayed snow on all channels. inspection revealed b+to prescaler was about 5v dc instead of 6.8v dc. zener diode in basecircuit of 6.8v regulator was defective. | ||
| SONY | KV2645R | Sound distortion | Two transformers were replaced the same week on two different units for excessive vibrations or singing. wedging did not help. | ||
| SONY | KV2643R | No tuning, replaced c519 | No programming any channels on manual or auto. you could setthe stations appear on the screen but they would not be programmed in thememory. during auto program, the neons would not light up in sequence asthe set tuned through the bands, only channel 2 | ||
| SONY | KV2602 | Intermittent shut down, replaced cracked hvr block | This unit would intermittently shut down. the hvr block had acrack across the bottom. | ||
| SONY | KV1947R | No tuning most channels, resistor change | Kv-2649r will not tune most channels, only 5 and 6. kv-2647rwill tune some of them, some sets will and some of same model will not. | ||
| SONY | KV1945RS | Dead, d603g | Set will not turn on. | ||
| SONY | KV1941R | Dead, replaced open r812 | This tv was dead when servicer received it. replacing thegcs, q901, f602 and t801 restored both picture and sound. however, therewas severe ringing on the left side of raster. all sweep derived voltageslooked clean on scope. further troubleshooting r | ||
| SONY | KV1922 | No color | No color, found no 3.58mhz output at cx172. traced problemto capacitor c330 (leaky, reading 300Ω). | ||
| SONY | KV1730R | Dead | This unit lost all signal at the 3rd stage of the remotepre-amp. we found the capacitor in the tank circuit off the collector ofq1103 to be shorted. | ||
| SONY | KV1546R | Intermittent no color, replaced l304 | This unit was losing color intermittently. servicer reportshe has had 2 other units with the same problem. | ||
| SONY | KV1511 | Darker picture on the left side of the screen | This unit had a darker picture on the left side of the screen.the screen was divided almost down the middle with the right side normal.scoping the 110v line revealed about 35vpp of horiz. noise c528 was foundto be defective. | ||
| SONY | KV1222R | Hum noise in the set | End user stated he could hear hum coming from the unit evenwhen the unit was turned off. turned out that customer was hearing anarcing within the capacitor. cap is across the ac line in (c601, 0.22uf). | ||
| SONY | KV1222R | The door will not stay shut | The door will not stay shut. -hq comments: the countermeasure to the above problem is given in thedecember 1982 fpr summary. | ||
| SONY | KP7225 | Unable blue horizontal convergence, replaced q5353 | Blue horizontal convergence control inoperative. |