Samsung DLP - Model HLR4667WAX/XAA

Question

I have Samsung DLP which is in a loop where it tries to start but unable to. I have to remove the power to turn it off. Below is the approx. sequence:

Lamp light comes on - blinks 15 seconds
Goes to Standby for few seconds ( like it is trying to start itself )
Restarts again
In continous loop.