Cliff,

S Video issue: In spite of the fact that the Niles iPower does not provide RF ground loop isolation, I do not think that is the source. With Escient connected to the Proceed via video, other than the RF noise, do you have any visual interference?

Third circuit issue: Unless you are using direct IR input jacks on the back of the Proceed, the IRF-6 would be optically connected and not electrically connected to the other devices.

Try physically moving the components around. I have seen some bizzare problems cleared by just rearranging pesky pieces. With all these digital products out, some aren't shielded as well as they should. Those "1"s and "0"s flying aound produce a soup of RF interference.

Rob