Hitachi 50UX58K-V8F001238 T.V. acts like it has no power. Won,t turn on. Power button won't light up. T.V. was working fine....turned it off and now acts like it has no power. Is there a re-set button somewhere? TV will not turn on no power light. I opened up the back and when you unplug and plug back in two green lights on a board light and then when a third green light on a different board lights up they all go off. The tv was being watched and just shut down when the problem occured. The tv is 10 yrs. old and never have had a problem

Hello Weaser,

Try a hard reset first..Unplug all connections from the TV, including mains. Wait for about an hour.Nowkeeping the power button pressed, plug in the TV to the mains.

If that did not work, it looks like you have a burnt out resistor or a faulty convergence IC, or bust capacitors. Most likely the regulator is bad because of bad capacitors. Can't really say for sure with my long distance diagnosis.
However, one things for sure...if you do not have any solid state printed circuit board repair experience, I'm afraid the best advice I can offer would be to call in a pro to assist you in this repair.

You can call their support line at +1-800-448-2244

HERE is a user manual,if you need it..

Hope that helps! Should you have any further questions, please feel free to post them here.

P.S. - If you find that the solution/answer I provided led you to, or resulted in a fix, please close the ticket with a FixYa! rating. I would be very grateful for your show of appreciation.
If it hasn’t, please do not assign a rating just yet. Please post back as to what steps you took, results, etc, and I will try to assist you further as best I can. I am here at your service.

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Cheers!
IrishDruid

Look in the instruction manual for troubleshooting. Also, try calling customer support. If it really still works fine, i would mind it. But since the tv is 10 years old, i would accept the fact that maybe it is time to get a new tv or repiar it.