i have a larger rear projection screen as does dawn. and when the screen is on, it takes a few minutes in, then starts blinking, or rather blanking out, and i noticed that the "TIMER" LED display on the front of the unit blinks the same time the screen blanks out. HELP!! I dont think thered be such a knob screw on a rear projection, need to know if anyone had experienced having a repair done with the same problem. Also i bought it for $60 knowing the problem existed, do i now own a boat anchor?

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