TV Repair: Common Faults and Solutions.
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Results: 87417
Results: 87417
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | KP5040 | Horiz. lines in the picture, ground loop changed | There was a drive line in the picture which was also radiatingto nearby sets. we found this interference to be caused by the horiz. barosc. in the crosshatch generator (ba board). we could find no defectivecomponents and assumed the problem to be a gro | ||
| SONY | FD20A | No raster, replaced crt | This tube had a shorted anode causing no raster. the hv waslow. | ||
| SONY | KX2501 | Shut off, replaced ic651 | Set shuts off just after turn on. found 140v b+ line goingup to 250v. | ||
| SONY | KV3000R | Dead | Dead. found 150vdc fuse on the f board open. second problemis both doors were slipping on the track. repositioned door motor. thisis the second unit i have found that the nuts that hold the motors wereloose. upon closing door would reverse and open. | ||
| SONY | KV2649R | Intermittent fade out, cleaned crt pins | Picture would fade out to a dark raster, very intermittent.all voltages checked ok. | ||
| SONY | KV2647RX | Black lines on the screen, replaced vhf tuner | Two black lines on left side of screen. | ||
| SONY | KV2647RX | No reception on cable, replaced c208 | Set would not receive channel 2 on cable. all other channelsok. trimming of aft coil on the board (t203) did not help. | ||
| SONY | KV2647RX | Uneven shading and jail bars, shorted l204 | Uneven shading darker left to right, and jail bars. jailbars show up on dark screen. shading shows up also on dark picture. | ||
| SONY | KV2647R | Green raster with retrace lines, replace ic-501 | Green raster and retrace. | ||
| SONY | KV1954R | Looks like crt failed, shorted c530 and open r538 | This set appeared as though the tube was weak. c530 wasshorted and r538 was open. | ||
| SONY | KV1953RX | No functions, replace q2002 | No ch. display light. no audio. no front panel controls.ic2001 (cx7931a) on m brd was receiving the info. on pins 3/4 from ic001on the mu brd. however, output back to pin 5 of ic2001 was not occurring.pin 12 of ic2001 was reading 6.4v instead of 12v. | ||
| SONY | KV1952RX | No functions, replace x2001 | No remote or manual functions. channel indicator lamps didnot come on. this is the 2nd one i have found. i have also had 3servicers that have had the same problem. | ||
| SONY | KV1948R | Vertical rolling, leaky d513 | Vertical rolling and little foldover in picture, verticalcontrol in the front panel has little effect. | ||
| SONY | KV1947R | Faded picture, c519 open | Faded picture and picture control has no effect. horizontalripple on q342 and pin 4 of ic341, it effects all pins of dynamic picturechip. found c519 open. | ||
| SONY | KV1924 | Bad tube | This unit had a weak tube. also r555 was open by shortedc548. | ||
| SONY | KV1207 | Snowy picture | This was the 3rd time in for snowy picture. each time foundfailure of transistor q101. | ||
| SONY | VTX1000R | Video mute | Kx-1901 plays fine with external video but when hooked tothe vtx-1000 it goes into video mute. we found ic005/if chip in thevtx-1000 to be defective. | ||
| SONY | VTX1000R | No channel change | Would not change channels after approx. 30 minutes playingtime. | ||
| SONY | KX2501A | Vertical bars in the picture, replaced c1527 | Light vertical bars in the picture. | ||
| SONY | KX2501A | Shut down, replaced c657 and q652 | Transistor q552 shorts out as soon as the voltage reaches70v on ga board. |