I have an RCA H50WH72S DLP, and when I turn it on, the power light blinks 5 times and then goes out. It does this 3 or 4 times and then it turns off completely. While it's doing this, I can hear the audio fine. The owner's manual says that when it does that, the bulb is blown out or the door is open on the back. However, sometimes after about the 4th or 5th time of cycling through the blinking, it comes on and works fine for several hours. Last night I couldn't get it to come on at all, so I made sure all the connections to the bulb were secure and that the door was properly closed and I still can't get it to come on. Is it possible that the light was on it's way out but would still work fine on occasion, or is it probably something else? This is the first trouble I've had with the TV in the 2 years I've had it and I don't use it that much, so I don't know what happens when the bulb dies. I assumed it would just go out.