I bought this new in 2005 and have replaced the bulb about a year ago. A few days ago I turned on the TV and it ran for about 30 secs to 1 minute, then the screen went dark and the blue LED and power button were flashing. I went to this site and learned to unplug, wait and plug back in. It worked fine. A day or so later I had to do the same thing. This time however the picture has a slight blue tint but seems to be working normally otherwise. I have never cleaned out any dust inside the TV, only on the outside. Please don't yell at me I just found this site a few days ago and joined. I will be cleaning dust from fan blades and grills.
I called Discount Merchant and the "Tech" was not very impressive. After much repeating my TV and model #, (strong accent and seemingly out of breath like she had just run a mile) then she put me on hold to go ask someone else, she said I may need a DLP chip or a color wheel. They do not carry the color wheel but maybe would have the chip but would need the part number off the existing chip. I asked about replacing the lamp or ballast, she did not think that was the problem.
I have been impressed with the knowledge of this group and would appreciate some input and some help with diagnosis.