The Lamp on my Mitsubishi WD-62725 is about to go out - there has been a little yellow light for about two weeks and it flashed on the TV this morning that the lamp was going to go out - I just purchased a replacement lamp however, I can not find my manual and therefore, I do not know how to replace the bulb myself. I have tried to find a manual on line without any luck. Can anyone help me in directing me how to replace the lamp.