Getting "NO SIGNAL" using multiple HDMI sources with Mits HD1000U

I have just upgraded from and IN72 to an Mitsubishi HD1000U.


I am using a powered HDMI switching box to move between 3 sources:


1) Toshiba HD-XA2 Player (set to 720p output)

2) Sony BDP-S1 Blu ray player (set to 720p output)

3) Sony multi-disc DVD Player w/ HDMI out


When I first installed the HD1000U, I was able to demo the HD DVD material on the XA2 with no issues. Then I switched to demo the Blu Ray material also with no issues.


Since then, I have not been able to get output from the XA2. When I switch to it, I get "NO SIGNAL" on the screen. Yet, I am able to switch to the BDP-S1 everytime with absolutely no issues. I am also not getting any output from the standard DVD Player but I am less concerned about that right now.


Any ideas on why I am no longer able to get a signal from the XA2? I am using the same HDMI cable as the BDP-S1. I never had any issues switching with the In72 so I am wondering if there is a setting in the HD1000U that I am not noticing.


Thanks for any help out there.