No Elk Joy - complete crash.

[RAL]

Oh, RAL, you asked about the isolators on the bus. I tried them, they didn't work right off so I took them out.
 
i want to get back to them with a scope and see what the turnaround time is. According to B&B they should work so I want to get their take on it after gathering a bit more data.
 
If those can't be made to work, do the Ditek protectors work on the Elk bus?

The Ditek surge protectors contain MOVs, like most other surge protectors.  In normal operation, they are an open circuit, and won't disturb the signals on the data bus.