I have a Panasonic PT-50LC13 TV and I turn it on and the picture comes up and everything but after a min or two the TV shuts off and the power button blinks red and the lamp light blinks. The bulb was replaced about a year and a half ago and I have tried unplugging the TV and plugging it back in and also taking out the bulb and blowing out any dust and putting it back in but the problem continues. The bulb looks fine I do not see anything wrong with it. I called Panasonic customer service and the guy said the bulb might be going but it seems like it is something else. Any suggestions?