To narrow things down a bit, this thread will be about troubleshooting a few issues with my new home theater setup. Tech specs: TV: Samsung PN51E530 Receiver: Sony STRDH720 Speakers: Onkyo SKS-HT540 BluRay: Sony BDP-S570 Media: DirecTV HD receiver HDMI Cables: Amazon Basics Speaker Wire: Mediabridge 16ga HDMI cable from bluray to receiver, from satellite box to receiver, from receiver to TV. I consider myself slightly more advanced than a "beginner" when it comes to home theater and electronics in general, but I'm having some issues. I built this system piece-by-piece, on a budget (obviously), and it worked flawlessly for about 2 months. The first issue to arrive came when using the bluray player. I don't exactly recall whether we were streaming video or watching a DVD, BDVD...whatever... Anyway, all of a sudden there was a bright white flash...then another...then two more...and so on until we couldn't watch anything. The best way I can describe the "flashes" would be to compare them to a strobe light. They were bright white, only lasting for an instant. After this happened, I shut everything down and turned to the handy-dandy interweb for some advice. I combed through forums, answer sites, manufacturer product reviews, troubleshooting guides, etc., etc. The closest answer I could find was that perhaps I had a faulty HDMI cable...or maybe this was just wishful thinking. Anyway, I replaced the cable shortly thereafter, and things were back to normal. *Now I feel like I must note that we don't use our home theater a whole lot. I'd estimate maybe 2-3 hours, every other day. Maybe 20 hours a week. I know this is not optimal for troubleshooting purposes. Now last week my girlfriend was watching TV and our problem was back. Only this time she was watching DirecTV, not the bluray player. Now the flashes were "snowy" and dark/black scenes had red pixels showing up. Even the "guide" screen had the odd red pixels. This opened up a whole new can of worms. I ruled out an issue with the TV by running the "Self-Diagnostic" picture test. This is where the colored bars show on the screen, and the prompt reads something to the effect of, "is there still an issue with your picture? Y/N?" When I ran this test, there were no flashes nor red pixels in the black/dark part of the test screen. Easy enough. Next, I started wiggling cables...disconnecting, reconnecting. I made sure all connections were snug...easy enough. I reset the satellite receiver...worked for about 10 minutes, flashes returned. Ah-ha! moment #1: HDMI cable from satellite receiver directly to TV...flawless. Ah-ha! moment #2: The HDMI connector that I pulled from the A/V receiver was very hot... Ah-ha! moment #3: The top for the A/V receiver, directly above the HDMI inputs/output, was very hot to the touch... My entertainment stand, if you are looking at it from the front, measures approx. one receiver high, three receivers wide...boxed in on all sides, except the front. So from left to right, it's my receiver, center channel speaker, and bluray player and satellite receiver (stacked). Now I realize some of you may be yelling at your computer screen, with something like, "of course it's overheating, you knucklehead!" Please feel free to reply with this, haha. Anyway, I shut everything down, pulled out my center channel speaker, turned the receiver so that about 1/3 of it was hanging out in the open. The end sticking out also happens to be here the HDMI ports are located. I left the room for about a half-hour, came back, hooked everything up the way I had it from day one...just to see what would happen... I fired everything up, but I left the center channel speaker sitting out, and the receiver still hanging out in the air. Needless to say, the whole system worked flawlessly for the next 4 hours. UGH.................. Million Dollar Question: Knowing heat and electronics don't play well together, could excessive heat in my A/V receiver be wreaking havoc with my television viewing pleasure? Does any of this sound familiar to anyone?? The flashes? The red pixels? Is it excessive heat? If it's excessive heat, how many fans do I install in the back of my entertainment stand? Is my receiver permanently damaged? If you read this whole post, you are a saint...so thank you, even if you may not have an answer to offer.