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 | KP5040 | Vertical line in the center of the screen | Vertical line in the center of the screen from cross hatchgenerator. lifted resistor's r3393 and r3384 and connected them to ba-9pin 2. this method of getting rd of the vertical line is better thanjumping a capacitor across d3312. with the capacitor a | ||
| SONY | KP5000 | Convergence change, replaced green crt | When setting unit up for convergence by placing hatch patternon screen, the set would set up nicely. then when switching the crosshatch off, the pix looked severely mis-converged. closer inspectionrevealed that only the green was mis-converged and in v | ||
| SONY | TV520 | No picture | No video when replacement crt is used. have had 5 reports ofthis problem. p/n 8-731-105-15, ct-450 is being subbed by 1-546-039-00.this replacement has an adapter socket to use. however, when hooked upno video is received. -hq comments: installing th | ||
| SONY | TV115 | Intermittent agc | This unit displayed very intermittent agc. under very strongsignal conditions it would play well. we found r333 to be thermallysensitive. it looked fine however, no signs of overheating. | ||
| SONY | KX2501 | Dead, replaced d1206 | Dead. evp-1 ckt ok, shutting down pps. replaced open r675,produced raster. hooked up a vtx-1000r unit smoked and went dead. r675open again, q1343 open, r02 burned. replaced all parts. | ||
| SONY | KX2501 | No power, replaced t652 | This unit had no drive to the converter output on ga board.we found the primary of t652 to be open. | ||
| SONY | KV9000U | Incorrect parts compatibility | Servicer ordered thyristor from distributor using p/n1-801-010. this number subs over on the microfiche to p/n 8-719-000-10.in the semiconductor replacement handbook, page 321, diagram #d040 showsthe lead configuration of the substitute part. if this c | ||
| SONY | KV2648R | A small purity spot on the screen, replaced c801 | This unit had a small purity spot on the right-hand side ofthe screen. after much adjustment we nearly concluded that the crt wasdefective. further examination revealed the etc ckt to be the cause.disconnecting the etc coils eliminated the problem. we | ||
| SONY | KV2648R | Incorrect color, resoldered ic4005 pin 14 | Bad color. hue was bad. could be mistaken for purityproblem. found bad solder connection at pin 14 of ic4005. | ||
| SONY | KV2647R | Part of picture blanking out, r557 value changed | Horizontal problem. part of pix blanked out. frequency notstable. found r557/1.2Ω resistor had climbed in value to 12Ω.resistor located on the 15v line. | ||
| SONY | KV2647R | Intermittent no channel reception, replace r-025 | This unit would not tune stations intermittently. found r025/22kΩ resistor increased in value to 35kΩ on mf board. | ||
| SONY | KV2647R | No channel 11 reception, replace ic002 | This unit would not tune channel 11 in all the way. thescreen displayed a herring bone pattern. at first it appeared to be anaft problem. however further investigation revealed ic002 memory to bedefective. | ||
| SONY | KV2645R | Popping sound on channel change, replaced t207 | Servicer had replaced t207, hoping to cure a highly inter-mittent sound loss problem. set was returned to shop and i noticed apopping sound on channel change. | ||
| SONY | KV2601 | Intermittent all channel display | Intermittently unit would go to all channel display lightslit. could not tune in any station when all lights locked in. foundnegative line off flyback ok but after going through coil l511 found thatthe negative voltage sometimes missing. also serial n | ||
| SONY | KV2602 | Intermittent shut down, replaced ic501, d501, q501, t502 | Intermittently goes into hv shut down. changed ic501, d501,q501, t502. also reduced the value of r572 to satisfy the adj. procedure. -hq comments: probably this type of shut down is caused by defective hvrblock. the 15.2 +/- 0.1v specified in adjustm | ||
| SONY | KV1946R | Picture distortion (v), replace ic502 | Would not scan top 2 inches of picture v-size and lin. hadno effect, remove blanking and fills up picture. | ||
| SONY | KV1923 | Picture distortion (v) | Unit came in with 2 of vertical. we found c520 shorted andthis restored height but the linearity was poor. found c529 to havechanged in value - evidently damaged. c520 must have tantalum replacementfor best results. | ||
| SONY | KV1922 | Picture distortion (pin) | Severe pincushioning and poor width. q513 pin amp shorted andc810, ic546 to be dried up. after replacing these parts the pin and sizewere substantially improved. however during the first 5 minutes of opera-tion the left and right sides were pulled in | ||
| SONY | KV1910D | Picture distortion (h) | Unit had severe horiz. foldover and would short the sg613 atfull voltage. the problem is very elusive to find. have seen severallately. | ||
| SONY | KV1723D | Dead | Servicer had replaced horiz. output sg613 and regulator2sc867a. replaced again, also r556 in start ckt. monitored voltage dropacross r807 - too much. replaced c813 and c809. set came on, however,now no g-y from chroma demodulator. checked waveforms |