I have a Mitsubishi WD-73732, and I believe that I need a new lamp. The TV will turn on and after about a minute it will shut itself off, and the red light on the TV for the lamp comes on. This TV is about 5 1/2 years old and we have had the lamp replaced before while it was still under warranty. I was looking up the lamps to purchase...through Mitsubishi, the cost is $250. I found other replacement lamps for as low as $40 (Pure Glare). I am sure that it is probably better to buy the one through Mitsubishi, but for the price difference it is really that big of a deal to buy a cheaper one? I also found one for $75 that says it is an OEM bulb with a generic housing (Apex Lamps). Please advise.