I have no idea. The best bet is to call 800-SAMSUNG and have a service tech come and diagnose the problem. Naturally, the television should NOT be doing that. I heard one or two cases of this happening but the solution was different for each and it required a tech to fix it.
I purchases a samsung DLP TV, I had this tv about 2 month great picture. But when the tv has ben on for sometime, It start to pope & cracking sound sometime the sound, has me and my friend jumping, It that lound st time. What is this sound?