I have a new 55" Samsung LED TV, purchased 12/9/13. While watching broadcast TV, recordings on DVR, or streaming movies from Amazon or Netflix it will occasionally simply black out (no picture, no sournd). These episodes last only a couple of seconds, but they're annoying. I went so far as to have a Samsung technician visit my home to try to correct the problem; He was next to useless, insisting on doing all the talking rather than listening to me as I was trying to relate my problem. To appease me, he changed the major circuit board, saying as he did so that it probably woundn't fix the problem and that these kinds of problems seem to occur with HDMI connected devices, or something to that effect. He was right, the problem persists. Has anyone seen this? Is there a fix?