Problem(s) Encountered:

At the beginning both CCD cameras didn''t respond, turning them off and on again, solved the problem.

Andor camera after reset had problems with cooling down to -70C, it took more than hour and was possible only when I did it step by step i.e. first -10, then -15, then -20, until I reached -70.

Solutions:

I suspect the issue was with the plug strip that was in use on the telescope.  Replaced the plug strip.  Hopefully this will remedy the cuts in communication.