Please connect the TV to different power outlet and check if its switching on if not check the fuse , then the power chord , power board may have failed and this is hard ware failure, OR you can download the repair manual from this link:

HERE



good luck..................

Hi,
The power supply has gone bad. I would suggest donot attempt to power on the system multiple times, as it may damage something more inside. The following are the phone number to call Proton support.
+1-323-980-8292
+1-323-980-8293
If the system is under warranty , the company may service the same free of charge, subject to some conditions.
If you could give the exact model of the LCD and the serial number at the back, i would try to find a self help solution to your problem.

Thanks
mandeep

Something on the powerboard has failed, either capasitors, fuses, etc. If you have experience in electronics, you could inspect the board and replace possibly bad components, but if you have no experience its best to take it to a professional.

You can get a 2nd opition by asking from one of our top tv repair experts on this site

http://www.fixya.com/users/slinteriors

he has 25 years of experience in this field, ask him with the ask me button.

Sounds to me a power ICB has gone bad if you can get it replaced under warranty that is your best bet. If not then you can call the manufacturer and have them fixes still at your expense. I would call them in advance and get a price for it all general estimation. Make sure its what you want to do.

hope this helps answer your problems

Nate 08:38:28cst