SER2 trouble shooting

Well, I inserted the second SER2 I had on hand and saw the same results.  Thinking it was not the SER2, I started to methodically cutting the remaining boxes that were attached to the DAT terminal of the SER2.  Suddenly Half started working and the other half still did not function.  A major break through.  Again removing half the boxes that were not working, I finally narrowed it down and looking at the leads going into the DAT terminals of an ASC, I saw that I had swapped the DAT and COM leads to the box.  Correcting this wiring Faux Pas, I began adding all the boxes back into the circuit one at a time.  Everything went according to Hoyle.  As a final correction I put the original SER2 back in to the Circuit and again everything worked as advertised.  I can now start connecting my Switches and Power Blocks for my Expansion back to the control boxes.

I hope my experience will help you out if you ever run into a similar experience. Bottom line, methodically remove items until things begin to work and then start looking at the items removed for errors.