Whenever I pull up Pandora on my Premiere XL, my tivo goes black and then I get a "No Signal" banner on the tv. If I turn the TV off and back on, It comes up to the pandora screen and works just fine. If I go back to live tv, it switches flawlessly, but if I go to pull Pandora back up, I have to turn the tv off and then back on. Its a 40" Toshiba connected with an HDMI cable. I've also had the same issue with YouTube as well. Any ideas?