My JS8500 has the problem where the screen goes black for a second or two no sound either comes back, I have a geek squad warranty, 1st thing they did was mailed me a new one connect and cable, that didn't stop it. They're coming out this Saturday to replace a part in the TV. The black screen sometimes will only show up every 2-3 days and other times once a day but after spending $2000 on a tv, I'm prepared to go through the 3 repairs required to be able to get a refund and get a different brand. The black screen I'm getting was happening since about a week after owning the tv, I thought it was a firmware problem and stuck with it but now 2 years later it's still a problem, luckily I bought the 5 year warranty.
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