Hello, I recently bought an infocus SP7205 projector. I love the picture and it works great when playing DVD's, but I'm having trouble watching cable on it. I have a DVR box and digital cable through Comcast, which is hooked to the projector with composite cables. I will watch TV for about 10-15 minutes, and then it looses picture...either going completely blank where the projector doesn't recognize the picture, or the picture will blink and turn red then black. Does anyone have any suggestions? Thanks! Jessie