Hi there. I'm sorry to hear about your TV.
This is a DLP set. It uses a lamp to produce the image. When you say that it shuts off, do you just lose the picture or does the whole TV shut down i.e switch off?
I assume that the TV is not under a warranty?
Good. Now, I need you to elaborate on the flashing. There is a Power LED and a Lamp LED.
Each LED can display different colors so I need you to tell me exactly what each LED does.
That should be all I need. Nearly there.