i just got a free panasonic PT47WX52F rear projection tv. something is wrong with it, and the screen is black at all times, i see no light, noise, snow or anything. i get no sound. it turns on, then about 5 seconds later it turns off and the red light blinks 3 times, then pauses then again. even in the 5 seconds its on theres no picture or any light from the screen at all. i'm wondering if its a bulb, or maybe ballast? any suggestions, or advice would help, thanks.