Dicas Reparação SONY
Modelo - Chassis
Pesquisa: SONY Enviar Dica Resolvida
Resultados 18945
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV27S25 AA-2 | NO HIGH VOLTAGE | KV27S25 serial 811908. Unit has no High voltage. LED in front is flashing on and off after power up. There does not seem to be any horizontal drive to the Horizontal drive transistor. Defeating the Horizontal output by removing the collector connection still will not allow Horizontal drive to appear at IC351(37). This pin is sitting at nearly 8.5 volts, not the 3 volts it is supposed to be. Also IC351(38) the HOFF/AFCPIN is at 3.3 volts which is normal | Looks like the tech has a bad IC351 CXA2025AS. A second Jungle IC corrected the problem. | Muller |
| Sony | KV32XBR48 AA-2 | no chroma PIP | Sony KV32XBR48. No chroma in PIP | X3304 0n PX board not soldered (PIP) | Muller |
| Sony | KV27S15 AA-2 | NO CHROMA | KV27S15 Unit has no Chroma. Black & white is OK. Also no Chorma while using the PIP. Sound and On Screen Display OK. Initializing EPROM does not change the effect. | Scoping the first place where the chroma signal can be readily available is on the PIP module. They are marked ""C IN"" & ""C OUT"" on connector CN501(1 & 5). We have chroma going into the PIP board but nothing coming out. Jumping these pins together with a 1 mfd capacitor caused the color to return, as long as the capacitor was in place. Unit has bad "" | Muller |
| Sony | KV36FV75 AA-2 | NO AUDIO | KV36FV75. Unit has no audio. But also has no OSD stating ""Main"" or ""Stereo"" Main picture is fine. "" | ID codes are 0=25, 1=55, 2=47 3= 0 , 4= 155, 5 =143, 6 =6, 7=0 which is correct. Initializing the EEPOM did not correct the trouble. Tech will be returning with a Manual | Muller |
| Sony | KV27V22 AA-2 | intermittent snow | KV27V25 Unit has intermittent snow in the picture zThe tuner pn# 8-598-340-20 was replaced. Now the set has a symptom where the remote control causes the set to enter the video input mode when the channel is selected. Also the set will enter the video input mode if the and another brand of remote that operates a stereo receiver will put the set into the video input mode. | I instructed the tech to enter the tech mode and set the ID codes...ID0=25, ID1=23, ID2=47, ID3=0, ID4=27,ID5=135, ID6=1, ID7=0 . Write these in memory, then press ""8"" ""Enter"" to initialize. This corrected the problem. "" | Muller |
| Sony | KV32S26 AA-2 | Int Raster | KV32S26 Unit has a brighter than normal picture. When G2 is lowered the picture blinks on an off. Tech replaced the flyback and jungle chip with no changes in symptom | I had tech short the CN1761(1, 2, 3, & 6) together. This should give a perfect black and white picture. But when this was shorted we had a black and white picture but the picture still was flashing. Since the jungle IC was already replaced it was assumed the IK pulses were OK from the jungle chip. The main concern is if the pulses are leaving the main board, and if the pulses are getting back to pin 27. This flashing condition indicates the IK feedback pulses are insufficient some where in this path. Further static check indicated a shorted zener diode D1792 in the IK buffer path on the CRT | Muller |
| Sony | KV35V75 AA-2 | HORIZONTAL SWEEP | Unit has shorted L511 and Q512. Tech replaced these items and they burn out again | Tech needs to replace D503,D502, D504 and C511, C512 the retrace capacitor along wit the other components. | Muller |
| Sony | KV36FV1 AA-2 | HORIZONTAL SWEEP | KV36FV1 serial 9023663 Unit has a sever over scan condition for horizontal sweep. Tech did not measure any voltages in the pin amp circuit | Tech needs to check on L511, Q512, C513, C511, D502 & D504. One or more of these are shorted. | Muller |
| Sony | KV35V35 AA-2 | HORIZONTAL SWEEP | KV35V36 Product has a insufficient horizontal sweep. The sweep is reduced by 10 to 15% on the left side and 2 ~ 5% on the right. | When going into the tech set up parameters and adjusting the HSIZ value the sweep will change to full sweep. Monitoring the voltage at the Collector of @Q512 the voltage will vary from 27 volts HSIZ set to 22. When HSIZ is set to 48 Q512(C) will drop to 16 volts. The set will have full sweep but it has a slight foldover condition on the right side of picture. It is recommended the tech replace the retrace capacitors C511, & C513 and the Yokes"" capacitors C518, & C515. Tech replaced all of the capacitors and the symptom "" | Muller |
| Sony | KV32S40 AA-2 | horizontal sweep | KV32S40 ser 8053998 Unit has sever over scan of horizontal sweep. Tech replaced Q512 Shorted and Q511 open all elements. | Measuring the collector of Q512 tech finds the voltage running in excess of -7 volts. The voltage on this transistor in inconsistent with the symptom on the screen of a narrow raster that is hourglass shaped. L511 and Q512 are burning up. Suggest the tech replace the following additional components D502, D503, D504, C511, and C513. | Muller |
| Sony | KV27S20 AA-2 | horizontal lines | Sony KV27S20. Black banding across the screen. Symptom does not appear when playing a tape. | Gave tech modification on the KV27S20 to replace C1267 from a .047 to a .47 tantalum capacitor. | Muller |
| Sony | KV32S40 AA-2 | horizontal | Unit has severe over scan of horizontal sweep. Tech replaced Q512 Shorted and Q511 open all elements. | Measuring the collector of Q512 tech finds the voltage running in excess of -7 volts. The voltage on this transistor in inconsistent with the symptom on the screen of a narrow raster that is hourglass shaped. L511 and Q512 are burning up. Suggest the tech replace the following additional components D502, D503, D504, C511, and C513. | Muller |
| Sony | KV36FV1 AA-2 | horizontal | Unit has a severe over scan condition for horizontal sweep. Tech did not measure any voltages in the pin amp circuit. | Tech needs to check on L511, Q512, C513, C511, D502 & D504. One or more of these are shorted. | Muller |
| Sony | KV35V36 AA-2 | horizontal | Unit has a insufficient horizontal sweep. The sweep is reduced by 10 to 15% on the left side and 2 ~ 5% on the right. | When going into the tech set up parameters and adjusting the HSIZ value the sweep will change to full sweep. Monitoring the voltage at the Collector of @Q512 the voltage will vary from 27 volts HSIZ set to 22. When HSIZ is set to 48 Q512(C) will drop to 16 volts. The set will have full sweep but it has a slight foldover condition on the right side of picture. It is recommended the tech replace the retrace capacitors C511, & C513 and the Yokes"" capacitors C518, & "" | Muller |
| Sony | KV27S25 AA-2 | HIGH VOLTAGE | Unit has no high voltage. LED in front is flashing on and off after power up. | There does not seem to be any horizontal drive to the Horizontal drive transistor. Defeating the Horizontal output by removing the collector connection still will not allow Horizontal drive to appear at IC351(37). This pin is sitting at nearly 8.5 volts, not the 3 volts it is supposed to be. Also IC351(38) the HOFF/AFCPIN is at 3.3 volts which is normal. Unit has a bad IC351 CXA2025AS | Muller |