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Why does my Polaroid TLX-03210B LCD TV have sound but no picture?

Why does my Polaroid TLX-03210B LCD TV have sound but no picture?

I have a Polaroid TLX-03210B LCD TV. I have searched everywhere i cant find anything on how to fix this and what i do find is too vague. A service manual, repair manual, or a schematic would be wonderful. Thanks.

Asked by: Guest | Views: 113
Total answers/comments: 1
bert [Entry]

"simi6, while I am still trying to find a manual for that TV, check the capacitors on the power supply. Most common error for your TV are blown caps. Check for any bulging of the capacitors top, they should be flat, as well as check for leaking caps.

UPDATE

Try this for further trouble shooting. Make the room as dark as possible, and turn the TV on. Even if the screen is black, you may see a faint glow coming from it. That would be the backlight. this would indicate a bad inverter.With the TV still on, hold a flashlight hold a flashlight at an angle close to the screen and look for faint images, shadows, or movement etc. If you do identify those, then your TC has a bad backlight. If there is absolutely nothing on your screen, I am betting my money on the power supply. This particular model,like many of the LCD TV's, has overheating issues of the caps. You could try and purchase a repair kit which is readily available at places like this. the large capacitor, that is not in this kit,is a 150mF@450V. Make sure that all of the capacitors that you replace are 105c rated and that the heatsink is properly applied. The power board can be replaced as a complete unit, but is more expensive as well as harder to come by due to it having been discontinued. The part number for it is 860-azo-ipos150h. the attached image number only depicts bad caps in general, the second image is one of the power board for your TV, with the location of the caps marked. There should also be two fuses marked F1 and F2 on it.Hope this helps for now, good luck."