I'm very worried i have been had!

A few months ago i purchased a 50 plasma phillips hdtv.

Now the thing wont stay on longer then 5 minutes before i get this red light on the set.

Now im reading that they sell the b and c stock electronics and maybe even Refurb!.

I was not notified of the information when i made my purchase and im kinda upset about it.

I have a repair date set up but im reading stories about sets being taken to shops for weeks! Also being returned scratched all over!

Anyone know what i should do? I would like to get my money back but i know my chances of that are very slim.

Im just very angry that i was sold a lower quality tv set without being told .