I had similar problem with samsung. I got the UN55D7000 and have the clouding problem in the four corners. The changed the panel but still have problem. When you search online, you will find out that this is a KNOWN problem with their tv. When I called back up and explained I still have issue, they only offered to refund the money...which might be ok...but I really just want the tv fixed.
I also read the the 8000 series does not have this issue and when I asked the ECR department to atleast upgrade me to 8000 and I would even pay the increase...they said NO.
Sorry but I truly think I will NEVER....EVER but a SAMSUNG product again!!!
On October 7th 2010 I convinced my family to purchase a un55c7000 55" 240hz 3D LED TV with an extended 2 year warranty from Fred Meyer. Exactly 60 days after purchase, I noticed the tv would shut it's self off and display triangles and squares at certain times. I immediately drove to my local Fred Meyer to see if i can exchange my tv. They said no.
As soon as I got home from Fred Meyer, I called the Fred Meyer Warranty company(N.E.W.). They said that they would not help me until a year has passed. They recommended that I call Samsung. I call Samsung and they sent a local tech(Ken's Electronics) to replace the power supply board. Now the TV turns itself off less frequently(not fixed) and the crazy shapes problem is still there(not fixed). 3 days ago I called Samsung and reported that these issues are still going on. Today the tech showed up and replaced the 2 other boards with refurbished parts from Samsung. After the tech left I powered on the unit. The tv started flickering really bad and making snapping and popping sounds flowed by a strange electrical smell. The snapping and popping sounds were so loud that they startled my Fiance, 2 Sons and myself. It was truly horrifying. Now the TV turns on and then turns off. Nothing more.
I called Ken's Electronics to let them know that the TV is seriously malfunctioning and Ken said he would order the replacement panel from Samsung. For the record Ken and Co. has been helpful and proffessional through this nightmare.
So I asked how long would it take to receive this panel replacement and he said 4 days or more.
Here's the problem now.
1. Our living room TV is NOT functional. Who knows when this will be rectified.
2. Our new tv is full of refurbished parts.
3. After all of this my family and I do not trust this tv set.
4. After calling Samsung today they have no resolution at all.
5. My family has had problems with other Samsung LED TV's in the past and despite their feelings towards our Samsung experience I convince them to go with Samsung again.
I was told a ECR will contact me tomorrow....in the mean time we have no living room tv with 4 pair of 3D glasses and a Samsung 3D Home theatre system.
I'm so pissed off.