Dale,
Thanks for the thoughts. What puzzles me is that the EC2 checked out just
fine when I sent it back last time. I had about 10 hours on it, and then it
quit working. Tracy declared it to be in perfect condition. You've given me
some good things to check, but most of them would have fried the previous
EC2 if present. This leads me to think it was an intermittent short which
has (hopefully) been eliminated by the rewiring job.
Regards,
John