I bought a Samsung PN50A550 from Circuit City last year, and it started having a serious problem after only 7-8 months -- just in time for CC to go out of business. Each time I turn it on, it cycles on and off 3-6 times, screeching and flashing a green screen, then eventually stays on to work appropriately. Each cycle lasts about 15 seconds. I can't control the TV by remote or on-set controls while it is cycling. Seems like making a significant financial investment in a top rated HDTV should offer a better experience than this. There are scattered complaints about this across the internet, but I haven't seen any answers yet. Any ideas for repair/service/recourse for what seems to be a manufacturer's defect? Thanks a lot!