Toshiba 46HM95 46" HDTV "picture goes black flatscreen" Questions

The only way we can get our picture back has been to turn the tv off and then back on, but it goes blank again 5 minutes later! Please help :) Is it ok when you watch regular TV thru the cable or sat

...picture also occasionally comes right for 5-30 seconds, but then goes back to the problems again. The first thing I would suspect is a bad ground connection at the input jacks. Try gaining access to ...