OP It seems to me, there is something else doing on.. How many pieces of equipment did you loose, in what period of time?
2-4 I couldn't quite follow.
My equipment is 6 months to 65 years old. The only failure I had, I caused. It was a cable drop! Why is your equipmed failing?
That would be the only question for me..
Is the stuff just poorly made, not being taken care of, used roughly or is there and electrical issue? All equipment requires maintenance and a GOOD VAC supply that's maintained at 120 VAC..
Regards