Television and Home Theater

My Sony tv shuts off after about 5 minutes and the light blinks 8 times, any suggestions on what it could be, if it can be fixed and how much.

I  have tv. rca  model g35831at. the hv. is arquing in dynamic   focus board

I  replaced the  crt socket.  dont' fix  the problem.  somebody help me?

thanks  sooo  muchs.

I have a samsung dlp model HLP5063wx and have been told that the colorwheel is bad. It has a loud screeching noise then the colors change from blue, to green, to red, etc then the tv just shuts down. I found that the model number of the wheel is BP96-00674A. It doesnt seem that difficult to replace. I did the lamp earlier this year. Any words of advice?