Television and Home Theater

We have a Toshiba 52" DLP projection tv purchesed in Feb, 2005.  It has worked great until the last few months.  We switched to Dish TV in Aug and the problem developed after that.  When we turn the tv on, the sound comes on but no picture.  It automatically cycles on and off and after a few tries the picture comes on.  That can't be good.  Now there are times that even after it cycles thru the on-off routine the picture still hasn't come on and then the tv turns itself off.  Could it be the lamp?  If it gets a picture eventually it would

I have a Mitsubishi VS 45605 that won't turn on. The green light next to the power button, labeled TIMER, lights and immediately goes out, then blinks a couple of times and then goes out. It sounds like the TV is turning on and shutting itself off. I have tried unplugging and plugged it in again, same results. Any ideas of cause and cost of repair? It is seven years old and I had no problems with it prior to this.

I had experienced some lines running down the side of my Plasma TV and called a repairman in to repair my Zenith 42 inch Plasma that was mounted on the wall.