TV Repair: Common Faults and Solutions.
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Results: 87418
Results: 87418
Repair Guide: Common Issues and Fixes
Brand | Model | Fault | Detailed Problem | Solution | By |
---|---|---|---|---|---|
SONY | BMC550 | Hook up of the bmc-550 and the bmcj-888u converter | In fig. 1-7 on page 133 of the s/m the 4 pin connector fromthe converter is shown connected to the 5 pin connector on the cs-5 board,what are we to do? -hq comments: the betamovie jig cannot control the bmc-550operations. although inconvenient, you mus | ||
SONY | SL2400 | No reel drive | Servicer replaced q218 and r233 (ss-13 board) several times(kept blowing), as well as q217 and q220, and reel motor board. replacedss-13 board with new one from npc, after 4 days r233 blew. | ||
SONY | KV2602 | Blows fuse at turn on, replaced thp601 and fuse | At turn on f601 fuse blows out. | ||
SONY | KPR4150 | Rainbow affect | At night, only you get like a half moon reflection on thescreen. if the person has a red tie and dark suit you notice this. -hq comments: it appears to be an adjustment problem. to investigatethat possibility, display cross-hatch pattern (generated in | ||
SONY | CCDV8AFU | Auto focus motor rotates past focus point and keeps on going | Turn unit on and auto focus motor turns focus ring too farand keeps on going. i have seen two of these. q020 was leaking c-b. | ||
SONY | CDP620ES | Wrong part number - ic301 | Ic301 is listed as 8-759-703-53. this is incorrect. the icis 74ls353n. | ||
SONY | M101 | Motor mounts not compatible | The replacement motor 8-835-008-11 is electrically correctbut has different mounting holes which will not permit use in the m-101. -hq comments: the original motor has been subbed to the one by p/n8-835-008-11 as in the tape recorder s/b #135. the s/b | ||
SONY | KV1957R | Set will not turn on with remote or manually, replace ic1w | Set could not be turned on by remote or manual button.closing power relay would allow set to work ok. i saw no signal at outputof remote head amp and pressing power button would not operate set either.voltage checks revealed 32v line to be about 2v low | ||
SONY | KV20XBR | Flashing change in video level at turn on, ic101 | When set first turned on, there would be a rapid flicker andchange in video level for about 5 or 6 sec, then pix was ok. this problemwas noted at base of q403. at turn on, this voltage was very low andpulsating. further checks revealed the problem to | ||
SONY | CCDV8AFU | Intermittent drum/capstan rotation and no camera video | 1) drum and capstan rotations were intermittent, then drumrotated at maximum speed. 2) no e-e or recorded camera video at lineor rf outputs. | ||
SONY | SLHFR70 | Left channel audio distortion | Left channel distortion on beta hi-fi playback only causedby am radio station 1540 khz. -hq comments: we do not have an hfp-200 here to try to simulate thiscondition. in the fpr concerning the sl-hf300, the customer lived closeto an am broadcast antenn | ||
SONY | KV25XBR | Vertical jitter | This unit had a vertical jitter on a satellite antenna. out-put from dish was low (about 3/4vpp). customer has two 25xbr tvs. theother one does not jitter. the output at ic1501 pin 20 was about 5vpp. | ||
SONY | KV25XBR | Intermittent vert | We have received a few reports of intermittent vertical. theproblem is that c1519 on the d board is poorly soldered. | ||
SONY | CDP30 | Multiple part numbers - ic106 | Ic106 shows three descriptions and two part numbers on page 44of service manual. also page 35 shows all three descriptions. which oneshould be used (-55rs in unit)? -hq comments: 8-759-920-17 (-75rs) has been subbed to 8-759-921-75(-82rs). please ord | ||
SONY | SL5800 | No color | No chroma. ic6, ic7, ic8 on yc-14 board all ok. pins 12, 11,10 of ic6 had 0v dc level. pin 3 of ic6 had proper waveform but 8vppinstead of 1vpp. | ||
SONY | KV1547RX | Incorrect part # in s/m | Please notice on page 48 that the s3003 is p/n 1-553-656-00.after receiving the wrong part, we looked at the p/n on the switch whichis 1-552-656-21. -hq comments: we will publish a s/b on this. | ||
SONY | SL20 | Illusive servo problem | Cap dc bias difficult to adjust, tracking control has no effect on picture. | ||
SONY | KPR4600 | Streaking in picture, replaced q-3349 | Unit had streaking in picture. by flexing ba board, problemwould clear. found transistor q3349 defective. moving just transistor, iwas able to produce problem. i think transistor had a break inside. | ||
SONY | KV25XBR | No sound, replaced fuse wrong speaker impedance used | No sound, found f651 open. | ||
SONY | SLHFR70 | Special effects | When going into special effects, pause slow motion etc, youwould see about 10 black horizontal lines 3/8 inch thick, top to bottom ofscreen. video was present with these bars. found problem in jog circuit.performed alignment rv13, 14, 15 and 16, and fo |