I got a new TiVo Bolt, model # TCD849000VO. My TV, a Samsung PNC50C7000, has 4 HDMI inputs. I plugged the TiVo into HDMI 4 and it worked great. I then unplugged the TiVo and moved it to the shelf where it's going to normally be. I plugged it into HDMI 1 and got a picture that was mostly red, with lots of static. HDMI 1 had been working fine with the previous device that the TiVo is replacing. I tried HDMI 2 and 4 and got the same result -- it was like all of a sudden the TiVo or the TV wasn't working. Then on a whim I unplugged HDMI 3 from our Apple TV and plugged it into the TiVo -- and it worked! I then took HDMI 2 and plugged it into the AppleTV -- and the Apple TV worked too! What could possibly explain this?