Dicas Reparação SONY
Modelo - Chassis
Pesquisa: SONY Enviar Dica Resolvida
Resultados 18938
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1947R | NO VHF, REPLACE IC002 | Set had UHF operation but no VHF operation. No VC was presenton tuner. All switching voltages were correct and verified against aKV-1948R. Applying external DC to VC line tuned all stations. | ||
| Sony | KX1901 | LIGHTER RASTER ON THE TOP | These units had a light area across the top of the screen.The first 12 to 15 scan lines after vertical blanking were lighter thanthe remainder of the raster. It looks like the units had a poor blacklevel just after vert. blanking. Also these units have | ||
| Sony | KV1222R | INCORRECT MECHANICAL OPERATION | The door assy will not stay closed due to the fact that thedoor retainer which is a plastic material, will not engage the catch onthe door securely in order to keep the door closed. This condition isprevalent on at least a dozen sets or more at the acco | ||
| Sony | KV1221R | SHUT DOWN, REPLACED R001 | After warm-up (or after simply plugging in and not turningon for 1/2 hour or so), the unit could not be powered up. If unit ison, it will then not turn off. Remote or manual same. IC001 was bad andthe relay drive transistor as originally suspected. | ||
| Sony | KV1215 | DEAD, REPLACED L309 | While I was servicing the unit using an external DC powersupply, I noticed the absence of audio. Inspection revealed no 18Vbeing supplied to the SC board. Resistance of 18V line to groundmeasured about 1K ohms, should be about 180 ohms. I then found L | ||
| Sony | KV1207 | DEAD | 12V line was being grounded by R221 lead touching ground. | ||
| Sony | VTX1000R | INCORRECT TUNING OPERATION | The customer complaint was the memory worked fine with theexception that it would not remember more than one channel beginning withthe number 3. It would remember any channel beginning with 3 but notmore than one. | ||
| Sony | KX1901 | NOISE LINES ON THE SCREEN | There were several lines in the raster, about 2 inches downfrom the top, looked like retrace lines. These were present only whenthe set was cold after warmp up the lines would disappear. | ||
| Sony | KV2649R | FM STATION RECEIVED WHEN OPERATING IN UHF MODE, IC002 | FM music is received when a UHF station is selected. VL pinat tuner remains at +11 volts regardless of station selected. | ||
| Sony | KV2647R | SNOWY PICTURE VHF, REPLACED VHF TUNER | When switching to any low band VHF channel, the picturewould become snowy. Readjusting RF AGC control would eliminate theproblem. Then, changing channels again, the pix would be snowy again.This cycle could be repeated over and over again. | ||
| Sony | KV2647R | PICTURE DISTORTION, REPLACE C-508 | The symptom is that the raster will erratically demonstrateshort vertical sweep. It is very difficult to isolate the problem to anyparticular component due to symptom being intermittent. | ||
| Sony | KV2645RS | JAIL BARS, REPLACED C539 | Jailbars faint under normal viewing conditions. Problembecomes obvious when camera fades to gray, or picture and brightnesscontrols are placed at minimum. Jailbars are then observed in graduallylightening shades of gray from left to right across the CR | ||
| Sony | KV2645RS | NO LAST CHANNEL MEMORY, REPLACED LEAKY D-26 ON MD BOARD | Last station memory is lost when the set is turned off. | ||
| Sony | KV2645RS | NOISE LINES ON THE SCREEN, REPLACED YOKE | Lines visible at left side of screen, one inch wide andvertical. All channels exhibited the lines. | ||
| Sony | KV1945RS | DEAD, WIRE SHORT TO GROUND | Dead. Talking to customer, we found that it was intermittent.Finally the set failed to operate and it acted like high voltage shutdown problems becuase you could hear the high voltage come up and then godown. The key point here is that there were NO CH |