Got a Grundig 37" lcd Hd ready ( model GU37BLKSE) it works fine for 5-10 minutes then turn itself off... turn power back on again and works another 5-10 minutes and then turm itself off again... does it worth fixing or just sell it for parts ? Thank you

http://www.trustedreviews.com/tvs/review/2009/02/26/Grundig-GU37BLKSE-37in-LCD-TV/p4