Hitachi 57F710E rear projection no longer turns on after power failure

Aug 9, 2018
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I have a Hitachi 57F710E rear projection tv that won't turn on. We recently had a power failure, the electric went off and on, off and on, and then off and stayed off. This happened in quick succession. After the power was restored the tv wouldn't turn on. I took the back off of the tv and checked to see if there were any fuses that might have blown. There was 4 fuses, 3 on the power supply board and one on another larger board that I believe says "deflector" on it. All the fuses were fine. We did the unplug and plug in thing like the book suggested and it didn't work, we even left it unplugged for 72 hours and plugged it back in, it didn't work. So, we decided to just move it out to the garage to get it out of the way. After we moved it out there I decided I would take the back off and take one more look at it. after I took the back off I plugged it in and I heard a slight click, it only clicked once. I also noticed that there was a small green LED light on the deflector board that was lit up, so I pushed the power button on the front of the tv and I heard the tv come on. I went ahead and hooked a dvd player up and lo and behold the tv was working fine. At that point I decided to go ahead and clean all of the optics. I then brought it back into the house and hooked all the STB's back up and plugged it in. The tv wouldn't turn on. It no longer makes that small click noise when I plug it in and the little LED light on the deflector board no longer lights up.

Could someone give me an idea of what could be wrong.

Thanks
 
Are you sure that the AC outlet the TV is plugged into is live?
This is just a guess but the AC voltage in the garage may be just a bit higher than in the house. If the power supply were damaged then that could make it sensitive to just that amount of low voltage.
 
Aug 9, 2018
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Thank you for your reply.

I had it plugged into a surge protector and it's working ok.

I thought maybe there could be a voltage issue, so I plugged it into a couple of different outlets in the house that are on different circuits and it didn't make any difference. I guess I could run an extension cord from the garage inside the house to the tv and try that.

It's a mystery to me, it worked perfect in the garage.
 
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