When we shut off our TV a red light usually stays on in the front of the TV. The other day when we shut it down the red light went off and we haven't been able to turn it back on since no matter what we do.Could it be the on off switch or board? If I know what to replace I could do it myself.
Nov 24, 2010
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Product Troubleshooting for 43UWX10B 43" Rear Projection Television
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I have had problems with the stand-by relay on the main board. There are two relays next to each other. Unfortunately, I do not remember which one it is. Also look at the solder connection for these relays. They have been known to go cold and crack open. Sometimes you can tap the case of the relay and the set will power up identifying which relay is the problem. I also would not overlook there being a problem in the power supply. Over the years, Hitachi has used LEDs to visually monitor circuits that are working properly. When they are not working, the LEDs do not light up. In this case, I would be looking for a red LED in the power supply being lit. If it is not, the power supply is the problem. Most of the time, the Power Regulator IC is at fault. It would be mounted on a heatsink an will have 6 to 8 legs .
I hope this helps,