I've noticed in a previous discussion that the color wheel can cause a buzzing noise and need to be replaced. I have a TV in which the color wheel is actually squealing like a bad bearing. The TV will not come on either. As soon as the power button is pressed it tries to come on but the squeal starts and the green light starts flashing. My question is can the color wheel be the cause of the TV not coming on. I wouldn't mind buying the CW and replacing it, but not if there is another problem.
No, a color wheel that's got bad bearings won't cause the set to not come on unless the CW seized up at which point you wouldn't hear it squeeling. Are you sure you don't have a bad lamp too?
It could be a lamp prob, since it doesn't come on. Is there a way to test the lamp?