So I'll add my story to those of you with issues with this model. I had a different thing happen from the looks of the posts here in this thread.
About 8 months into owning my PN60E8000 it started to flicker but only on one HDMI port. After a while it would black out that HDMI source and acted as if it didn't exist. That was till one day it freaked out and went into a power cycle frenzy. I quickly called Samsung to get a diagnosis and schedule a repair. Tech comes out tells me it's a bad HDMI cable. I'm sitting there thinking ok, but I already changed the cable. To which he brushes off and tells me that it's the quality of the cable that's causing the issue. I've got good cables not cheap ones from Frys. So he finally decides to open it up and noticed a loose cable, he make sure it was tight and that was it.
Months later in my 13 (August 2013) month the display made a loud noise and then the same HDMI issues started to happen again. Knowing that I was outside my warranty with Samsung I gave my extended warranty contract (Geek Squad) a call. Guy comes out see's the display and taps the HDMI board and we get back the picture for that HDMI. Tech leaves and 20 minutes pass and another loud noise happens from the right of the tv. From that day forward it would freak out from time to time and the image would become unstable and distort. But it would come back properly after a little bit. So I tried to get it fixed and Bestbuy couldn't figure out what was causing this issue so they didn't have a case for getting an insurance claim from their third party warranty insurer.
So after being in a long (December 2013)battle and dealing with this "unfixable" issue with Bestbuy I contacted Samsung who told me I would have to pay to have a tech come out. Even after showing them video of the issue and then showing the tech that came out they were not able to wrap their head around it. So they refunded me the cost of the tech to come out. I was then forwarded to their executive customer service to arrange a one time replacement as a make good. After weeks of back and forth I was given a date for a tech to come out and inspect the tv once more since the previous tech didn't try something. So I obliged them the opportunity and another tech came and went without any replacement hardware installed for the HDMI. My calls went unanswered after that and no other support (since March 2014) has been given to me by Samsung for the tv.
Now is where things get better, wait I mean worse. It's June 2014, I came home to the tv and left it on while I did some dishes. When of course the right side starts to make loud noises. But something strange happens the HDMI issues stopped. Oh thank god! But that was short lived because almost immediately the tv started to display some issues on screen. Those little lines started and stayed on the right hand side. So I called up Geek Squad who I'd given up on to this point and asked if they would do replacement. Which given my previous calls should have been something I could do, but since their idea of calendar is the actual calendar and not 365 days since first contact they can't do anything of the sort. By this time parts were ordered and appointments made for the issue which they assumed was the HDMI board. Weeks go by and we fast approach the date of the scheduled repair, but it never happens. They were never able to get the part from their supplier. So I contacted Samsung and they told me that they don't sell directly to customers. And on and on I went down the line looking for this part so I could potentially fix the tv.
I buy a new HDMI board out of pocket knowing it won't be covered by the warranty, but at least you'd think that the installation would be covered. Nope, see Geek Squad won't even touch the tv unless they are the one's who procure the parts to fix the tv. And since I still have a warranty with them I didn't want to open it up myself to install it and void my contract with them. So I keep bugging them from 2014 all the way till October 2015 when I finally got a "we're sorry to inform you" letter in the mail about the part no longer being in their system. In this time the HDMI issue decided to come back and that was it. I tried to plead my case, but due to there not being 3 instances of problems within a calendar year they were unable to help remediate the issue by giving me my money back for this dud of a tv. Nor were they able to fix it due to the parts no longer being available to them.
Since then I've taken upon myself to request arbitration between myself and Best Buy's Geek Squad service provider and have a date scheduled for the same day I purchased this tv 4 years ago. As a bonus the tv which I've continued to use despite It's faults has even more issues. So I took a few pictures along the way and a video of the HDMI issues I was having. You can view those here: https://photos.google.com/share/AF1Q...5Hd1ZsRFRZRGVR
I wish there was something more I could do in the meantime but all I can do is hope arbitration allows some relief from this rather frustrating TV. Be warned that arbitration with Samsung is very expensive and not worth it for those of us on the west coast. You have to pay to have the arbitrator come to your city. At least with Best Buy I can make the short trip to a local city and go through the process.