MY Tv wont turn on

The main board sends the on/off signals to the power supply board. You need a new main board. You can get it from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

Before spend $$ on replacement boards, make sure anything attached to it is powered off. Unplug TV for 5mn to 15min. Plug back in and it should power on. If not leave unplugged overnight before spending on a replacement board. We have to do this 2-3 times per year when someone forgets to turn off auxiliary components (receiver, DVD, cable box, etc) first. It has always come back on.

It could be the main or power board, either would cause your issue

The power supply get's it "turn on" signal from the main board. It is very likely you have a faulty main board. Do you have electronics experience??

possible bad power board

Need a new DM power board.Try Tv repair world.com for rruburbish power board.

The power supply board is defected. You need th change a new one.

This sounds like when the power came back on a surge went into your tv and burnt out the TVs main power supply or possibly burn out the flyback power converter on the TV main board!
(I am pretty sure it is either one of these things!)
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You can check the two board.
One is Power board another one is Y-main.
You can find right part with serial # & version #.