A2000 Toaster Problems on inputs 2,3,4

[rcgrabbag]

Hi all,
I have an A2000 with a system 2.0 Toaster system installed. I'm using DVD players as input to test out the switcher using non-copyrighted material (home made dvd's), but anything I hook up to inputs 2, 3 and 4 has major video image issues. The images have vertical and horizontal scrolling black bars, are jittering, scrolling and distorted, hardly recognizable and unusable. This problem doesn't exist on input 1. I've run the signal through an installed TBC, tried swapping dvd players to the different inputs, moving all components as far away from each other as possible, nothing seems to help. The Toaster manual, as big as it is, doesn't seem to  have anything that can give me a clue. I'm running a two-monitor setup, preferences is set up for that, and I'm pretty much at a loss. What's special about inputs 2, 3, and 4?

[rcgrabbag]

I think you are correct. Reading further into the TBC manual, I was able to get a stable signal on 2,3 and 4 by using another video source to sync with. But, having only one TBC card provides only one stable input signal. In order to get two stable signals, I need another TBC card.

[rcgrabbag]

Yeah, that's weird. I notice when the Toaster is launched, there is a stored image of the Video Toaster logo in memory that I can use as a second "input" signal, so to speak, and that's nice and stable, but of course, that image is not coming from one of the external input buses.