It breaks, but it takes time. I don't think the electrical part causes it, but they are cheap (the electrical switch) and do have problems occasionally.

I wouldn't worry about strengthening it. It lasted 16 years. The new one will probably do better; the luck of the draw.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician