Hi i,m ken I am working on this problem, I found this tv has chip problems, start at the power supply ($100) and go from there. If the power supply checks out ok check the chips, there is a way to reset the chips, also disconnect any add ons to the tv, and try that. I was told you can remove the batteries from the remote press all the buttons and reset the chips, but they did not have good results! I will keep working on this. ken
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