Had a Samstung LED TV for just over 14 months then it started switching itself on and off, checked internet and seemed to be a common issue with all Samsungs. I contacted Samsung who just denied any knowledge of the issues millions of people are having and just said get it repaired yourself. I removed all devices, reset the TV and had the power supply board replaced, as many people said this was the issue. Still got the problem so it is now going in the bin! They know of this issue as they have been taken to court in USA and had to pay compensation but deny it here. Never buy a Samsung product again unless you want to get stung, very poor quality and no after care or customer service.