GE TV shuts down
I have a 31" standard TV (31GT660YX3) that shuts down after about 3 hours. I have had no issues with this unit until now. After it fails, it will not power up with the remote or pwr button no fromt of set. After about 30 minutes, it allows me to power it up but it only stays on about 20-30 minutes then fails again. When it powers up, it comes on at channel 3 instead of the channel it was on at failure. I feel no extra heat or smells from the set at failure. Any thoughts on this? It sounds like a heat problem but I am lost in electronics.