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 | KV1912 | Tuner locked on ch 2 | Tuner locked on channel 2. | ||
| SONY | KV1910 | Picture stretching after warm up | Picture stretches vertically after about one hour operation. | ||
| SONY | KV1512 | Dead | This unit initially appeared to have a shorted sg613 and2sc867. upon powering up the set with a dc supply it was noticed thatthe waveforms were irregular. closer examination revealed r522 hadchanged in value. | ||
| SONY | KP7220 | Keystone, replaced d5313, d5312, q5537 | Keystone effect on all three tubes. pix normal at top butnarrow at bottom. | ||
| SONY | TV790 | H picture distortion | Horizontal frequency changes after short warm-up. | ||
| SONY | TV123 | No picture | Q502 runs red hot for about one week and then fails, causingno raster. | ||
| SONY | KX1901 | V foldover on the bottom | Severe foldover on bottom. | ||
| SONY | KV2648R | Gray bar on the screen | Gray bar very dark on left side and becoming lighter lookingtoward right side of crt. | ||
| SONY | KV2647R | Jailbars, poor ground on "s" board | Jailbars present on left side of screen more pronounced onthe higher channels. found poor ground on s board opposite the groundingposts from the tuner. | ||
| SONY | KV2647R | No vertical sweep, replace rv2206 | No vertical sweep. voltage at ic501 pin 11 should be 6.3 vdc.actual reading was 2.2 vdc. found vertical hold control had an 8000Ωreading center tap to case at all times. | ||
| SONY | KV2643R | Vertical line on the picture, remount q701 | Vertical line appears in the center of screen on brightscenes. found q701 installed wrong at factory. c was connected to e.b was connected to c and e was connected to b. | ||
| SONY | KV2602 | Picture blanking, adj jerrold cable box, vari-loser | When using models with 30p chassis on cable systems thatscramble the pay channels (by removing the sync pulses at the head end andreinserting them thru a converter) the sync is sometimes compressed tooclose to blanking. this apparently reacts with the k | ||
| SONY | KV1946R | Shut down, replace ic601 | Set turns off by itself after 45 minutes. | ||
| SONY | KV1946R | Sound and picture distortion, replace q051 | Set would not go all the way off. when turned off, pix woulddim, sound goes off. found q051 relay drive transistor completelyburned out. | ||
| SONY | KV1945RS | Intermittent sound, replaced ic202 | Unit had very intermittent sound. | ||
| SONY | KV1945R | Sound pop noise, replaced c226 | Sound would pop off and on intermittently. | ||
| SONY | KV1922 | No low vhf | No low band vhf-uhf ok. vhf high ok. no negative 6 volts atvhf hi terminal of tuner apply external -6 volts could tune in low band.q102 vhf hi drive had no negative voltage at base troubleshooting found-12v rectifier being loaded. | ||
| SONY | KV1746R | Intermittent shut down , replaced q901 | This set very intermittently shuts down. it could run a weekjust fine. | ||
| SONY | KP7220 | Picture distortion, replaced d5319 | Overscan. | ||
| SONY | KP5040 | Incorrect mechanical function | When closing mirror assy, motor stops intmtly during first 3or 4 inches of travel. this is more severe if even the slightest pressureis applied in a downward motion on the reflector when motor is running.the plastic pipes tend to jam severely when press |