Please try this:
-unplug the tv POWER cord from the wall outlet.
-wait 3 full minutes.
-plug in the tv power cord and try to turn on.
If that does not work then unfortunately there is not going to be any easy reset/fix. The tv needs diagnosis, parts, and service. If you have an extended warranty, it's time to contact them to obtain service.
As an experienced technician, theoretically I could help you with the repairs, but if you do not have the needed skills and tools then having it repaired by a local shop is your best option.
Despite the bad news, I hope you appreciate the answer that I provided so far. Keep in mind you saved a lot of money by coming here first- typically repair shops charge $99 up front just for diagnosis (to hand you an estimate). If you need more help or don't understand something use the REPLY option.
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