What do I check? My Emerson 40 inch LCD TV is perfect every time you turn it on but afte 3 to 5 minutes the picture starts to

A Jay

Estimable
Oct 17, 2014
2
0
4,510
Emerson LCD TV Model LN37A330JLDXZA VERSION PMOL
After it has been playing for a short time the picture breaks up, sections of the picture flash and dart on the screen and the screen gets darker the longer you leave the set on, Every time you turn the set on it is perfect for those first few minutes