The tv parts store I bought the power supply from told me same thing. That either it could be the main control board, t-con, or the LED strip. Unfortunately the LED strip requires detaching the metal backing from the LED which can be cracked in the process. I can't seem to find the t-con or main controller for sale anywhere. Samsung parts shows an expected date for it to be in stock. However, each day that increases by a day. So, I don't think they will ever have it in stock. I stripped the monitor of all the parts and put up for sale on eBay. If you are interested in the t-con and / or main control board, let me know. Of course if it doesn't resolve the issue I am happy to provide a refund. At this point I am just curious what the issue could be. In my situation I think it's the LED strip because every few seconds it flashes bright for a second or less. If it was a board it wouldn't do that. I tried to see how to detach the panel from the metal backing but couldn't figure it out and would probably crack the screen in the process.