This is happening to us too! So weird, we bought it in the same month and year but at Best Buy. Of course, it is hanging on the wall and impossible to get down to reach the Serial No. Were they able to give you a fix for it? Debating whether or not to try and get it off the wall.... @usersebCACqW3l wrote: Hi, I have a UN65KS8000FXZA 65" TV I purchased from Costo in November 2016. Still have the hard copy receipt. The TV worked great up until now where it is stuck in permanmenet on/off loop. Can not get the TV to turn on. Tried unplugging everything but the actual TV cord and no luck. I've heard this is a common problem with this KS8000 series per other discussion forums and per my local TV service repairman. Very disappointed this TV didn't even make it to 4 years old having paid well over $1500 US$. I have had been happy with Samsung products over the years. I own 2 other Samsung televisons and my phone is a Samsung Galaxy S9. Are there any options I have to have this television repaired?
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