I am having the same issue. Have you found an answer to your question. I am researching this now. My TV actually still works. I have to unplug the TV. and then turn it on then turn it back off and let the lamp cool down and then turn it back on and let it warm up. I usually can get 2-3 hours out of it this way. Not sure if it is the Bulb or something else. Let me know if you have found an answer to your question. I will do the same. Thanks, Joseph