My 52 inch toshiba regza LCD TV won't turn after a power outage. Everything else works except the TV. What could be the problem ?

try to check this site.
My Toshiba TV won turn on

CONGRADULATIONS!

I hate to tell you that this happened to me last week and mine is 18 months old. after calling toshiba and going through all troubleshooting, nothing worked. they referred me to a service center near me and the repair is $466!!!!! I have lots of power outages so they can seriously damage a tv (the motherboard to be specific). Mine is the 42 inch 535U. get a surge protector for your cable and ask your electric company to install a power shield on the meter or a surge arrester.. good luck.

you must either change the t- con board, or the left board strip. it is dangerous because mines caught on fire. but most like since that strip is connected to the lcd screen u will have to replace the whole entire screen.

a power surge can over load the electronics, {cooking them}so most lickely the set is burnt out ,sorry

If it flickers and changes colors like my 52" did, I removed the back panel cover, tore off the cheap foil on top and removed the t-con board. Used a head gun as I seem to fix alot of things with it now adays since lead free solder is cheap, heat the points up for about 2 minutes, replace it and throw some air circulation. I also noticed the top of my lcd has two main boards the are supposed to match up a platic pin and slide into place, the boards were warped and wouldn't stay down. I used a dremel polishing wheel, cut it in half and wedged them down and tv is running clean again.

Check to see if the tv is in the text mode of the closed captioning.If not you may need a new main signal board.Also try unplugging the set for a couple of hours to reset it.

I have this same problem with my 52 inch toshiba regza , The repair shop has said the cost of repair is as much as it is to replace the TV. I am past the one year warranty, but less than 2 year ownership, so Toshiba won't fix the known issue. Solution is don't buy a Toshiba

Unplug the power to the TV and HD cable box, wait 5 min. Plug TV and HD cable box back in.Everything is working like new. Go figure.

Check the ac fuse. In a couple of cases because of a power surge the fuse opens up.
After replacing, the sets have worked normally.