Dicas Reparação SONY
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1922 | NO COLOR | No color, found no 3.58MHz output at CX172. Traced problemto capacitor C330 (leaky, reading 300 ohms). | ||
| 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. | ||
| 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 |