Dicas Reparação
Modelo - Chassis KV20XBR
Pesquisa: KV20XBR Enviar Dica Resolvida
Resultados 23
Pedir dica reparação
| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV20XBR | IMMEDIATE SHUTDOWN AFTER TURN ON, REPLACED Q503 | After replacing the FBT, the unit goes into immediate shutdown after turn on. | ||
| Sony | KV20XBR | PIN DISTORTION, REPLACED IC552 ("D" BOARD) | Pin circuits were not working. RV552, RV554, and RV553controls did not respond. Pin 1 on IC552 was high around 11 volts and Pin3 was low to .6 volts causing picture to bow. SOLUTION: Replaced IC552 corrected problem. Reset Pin shapping, allwas fine | ||
| Sony | KV20XBR | SLEEP LIGHT IS ON, REPLACED D-657 AND C-666 | No video and sleep light is on. Traced voltages and found no5 volt. Traced to 8V line to power supply and found D-657 was shorted. | ||
| Sony | KV20XBR | IMMEDIATE SHUT DOWN | Unit powered up and immediately shut down. We found thatQ-503 in the protect circuit had a E-B short. This was caused by anintermittently arcing flyback. Replacement of the transistor and flybackresolved the problem. -HQ COMMENTS: With the flyback ar | ||
| Sony | KV20XBR | INTERMITTENT | Very intermittent problem. At certain times, the sleep andRGB LEDs would light only and set would accept no other commands - alsodisplayed no sound or raster. I also noted the absence of high voltagewhen problem occurred. At the time of failure, inspe | ||
| Sony | KV20XBR | SET INOPERABLE | Set was inoperable, i.e., no B+ from power supply. Locatedshort in 200V line caused by C-703. | ||
| Sony | KV20XBR | NO RASTER | Set would shut down after 3 or 4 seconds. Brought up setwith variac, found Hi-V protect voltage at the base of Q503 too high.Found transistor leaky. | ||
| Sony | KV20XBR | NO MAIN SOUND, LEAKY Q1115 | When on MAIN sound, no audio left or right. When switched toSAP (with sap broadcast) sound OK. Traced problem Q1115, MAIN audio up toBASE, nothing on collector. Found Q1115 leaky emitter to collector. | ||
| Sony | KV20XBR | RGB/VIDEO LED | This report is to be added to the one sent in on 5/1/87.I failed to note that the problem of the RGB/Video LED's being lit wascaused by C121 related to the manual on/off function. When C121 wasreplaced, the RGB/Video LED's were still lit. | ||
| Sony | KV20XBR | CAN'T TURN UNIT ON | Set could not be turned on with manual button, but you couldturn it off. When turned on with remote, RGB and VIDEO LEDS were lit.By turning these modes off with manual button the set would then functionwith TV air signal OK, plus all remote functions in | ||
| Sony | KV20XBR | PIC TOO WHITE, Q803 FAILURE | Original problem was tube had shorted in neck also spark gaphad shorted. After replacing these servicer had picture back but whiteswere to white and gave on defenition. | ||
| Sony | KV20XBR | ONLY SLEEP LITE AND RGB LEDS WERE LIT | When set turned on, only sleep lite and RGB LEDWe found horizontal output transistor was shorted. | ||
| Sony | KV20XBR | NO PICTURE, 200V LEAD AND ONE FILAMENT LEAD BROKEN OFF | Servicer told me that he just repaired 3 sets with the 200Vlead and one filament lead broken off right at the board (C board) connec-tion. It is possible that there may not be enough slack in the leadswhich could cause the problem. | ||
| Sony | KV20XBR | HORIZ AND POWER SUPPLY CIRCUITS | No raster, no sound. Sleep light comes on at power on, andstayed on until power off. Power supply (GA and GB boards) not function-ing properly (no output osc. running off freq.). | ||
| Sony | KV20XBR | NO PIX, SOUND | No pix on sound. RGB light stays on. |