My first problem is my HDMI slot will not work. I never tried to use it from the time the tv was new (set is now 4 yrs old) until about a month ago I bought a new HDMI cable and could get no signal at all with it. I tried another cable that I knew worked on my other tv and and still no picture. I am using the component connection for my tv signal now. I don't know if the latest problem is related but now when the tv has been on for a while the picture will freeze and when it returns it will flicker and show the current connection "Component2 TV" sometimes I get a "green thatch" looking screen before the image will return. I get no response from the remote when any of this happens. I took the back cover off and checked the fans and cleaned the dust out although not that much there. My calls to Samsung have only produced a request to send a service guy out.