Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KP7220 | NO BLUE, REPLACED CRT AND D5320 | The stopper diode associated with the blue CRT was shortingout about every 30-60 days. We found the problem to be caused by adefective CRT. The CRT was intermittently shorting. Evidently when alarge enough arc occurred the associated transient would d | ||
| Sony | TV125 | NO TURN OFF OPERATION | Power switch S901 operates by breaking ground connection. Inexternal DC mode such as mobile camping trailer installation, unit cannotbe turned off since DC return path is continued thru antenna transformers.Camping trailer antenna contacts body when in | ||
| Sony | KX2501 | INCORRECT PURITY, RESOLDERED THP-601 | Servicer complained that Profeel 25-inch Monitor would notHOLD purity adjustment if it was rotated on bench. Other TV's andmonitors in shop had little effect from rotation. Distributor duplicatedproblem on another set out-of-box, however auto-degaussin | ||
| Sony | KX1901 | WEAK VIDEO | Very weak video. | ||
| Sony | KV2648R | HUM SOUND, ADJ T204 AND T205 | Constant 60Hz hum heard on audio when HBO or SHOWTIME isselected. Tone enhance feature on TV boosts hum level even louder. TheJerrold JSX3DIC cable box does not remove the 60Hz AM sync pulse off thesound carrier to the TV. If the alignment is not perf | ||
| Sony | KV2648R | NO SOUND, REPLACED R5038, R5039, IC5004, IC5005 | Set had no sound, found R5038 and R5039 open. Also foundIC5004 and IC5005 shorted on X board. | ||
| Sony | KV2602 | RETRACE LINES IN THE PICTURE, REPLACED L503 | Retrace lines in picture. | ||
| Sony | KV1952R | GREEN SCREEN, HVR | Green screen. | ||
| Sony | KV1952R | NO DISPLAY, REPLACE ZENER D2003 AND Q2007 | Original complaint was display out. Found channel displayonly partially lit during channel change, and sound up would cause pix upto change at the same time. Also, channel up or down would cause sound tomute. Traced sound problem to IC2001, Pin 10 - P | ||
| Sony | KV1947R | INCORRECT SOUND MUTE, REPLACE IC001 | Sound would intermittently go off and if you changed channels,the sound would come back on. Problem was being caused by the mutefunction of IC001. | ||
| Sony | KV1946R | NO OPERATION EXCEPT POWER, LEAKY D010 | Unit would not respond to hand unit other than to turn uniton. After set was turned on, no other remote function would work.Voltages at Pins 24/25 of IC001 on ME board too high. | ||
| Sony | KV1945RS | SHUT DOWN, REPLACED CX-557S AND ADJ R563 | Set would work OK for hours then shut down. | ||
| Sony | KV1915 | PURPLE COLOR | Purple color shows up on and off. Problem is intermittent.I saw this problem more than 3 times in newer model. CRT pins do not makegood contact in socket of C board. | ||
| Sony | KV1910 | RETRACE LINES ON THE SCREEN | Vertical retrace lines were seen on the top of the picture onchannel 2 and 4. | ||
| Sony | KV1746R | INTERMITTENT SHUT OFF | Unit came in with complaint of goes off intmtly and blowsR232 fusible resisotr. Servicer changed Q205, Q206, C238, R212, R246.After all components changed unit went out again and in further investiga-tion, found R231 had 330 ohm instead of 10K as schema |