I've done about 6 HD upgrades with my 5 tivos without a problem until now. I have two tivo series 3 on OTAs and decided to upgrade both to 2 TB. I have always split the signal on RCA to other TVs in house with the HDMI going to my main (60") TV in my living room. I now experience a momentary blackout on both tivos that occurs about 3-5 times during a half hour show. I lose both sound and video, but only on HDMI-all other TVs on the RCA cables work fine. I also have a premiere (no upgrade) that is unaffected. I tried several hdmi cables as well as switch the inputs at the tv with solving the issue. Could this possibly be a problem with both of the new drives. Any other ideas? I went so far as to replace my hdmi cables with expensive cables from monoprice to no avail. Ironically I can watch the two series 3s in any room other than the living room but lose the hdmi. I am out of ideas---Help!!!