My Foredom never stops running. I have never had that problem except
when my GFI kicked the circuit off. However I can not say the same
for my vacuum pump. I have had more problems with it than a dog at a
flea convention. What I have learned is to start at one end and check
everything in isolation to determine the location of the problem.
Recently I was talking on the phone, using my new head set, while I
was working. The person hung up on my, so I thought. I could not
figure out why she was so rude. I called back and found out that she
thought I hung up on her. Something was definitely wrong. My phone
jack worked, my fax on the same line worked, I could get dial tone
and talk but ever so often it would go dead. Finally I isolated the
problem to a broken wire in the jack connecting my head set to my
phone. When I sat and held my head in the same position all was fine.
If for some reason I had to look over my shoulder it went dead. It
took my about an hour to figure that one out. Still working on the
loss of vacuum pressure.