Finally got a new s-video capable tv for our computer lab, and I have set-up the Apple Presentation System on a PowerBase 180. The output is actually better in terms of clarity than I had expected.
The only problem is that I can't quite get the bottom 5% of the monitor image to appear on the tv screen. So, I installed the screen squeeze software that comes with the APS. Now, the computer continually freezes within the first few mouse clicks after boot. After removing the squeeze, everything worked fine again, but I still had the crop of image problem. I tried re-installing 2 more times, with similar results: a completely frozen OS, requiring the 3 finger salute.
Could there be a conflict with an extension? Any insight greatly appreciated.