On Fri, 23 May 2008 14:33:18 -0700, "Cheri" gserviceatinreachdotcom
wrote:

I have a circuit breaker that won't switch back on for my microwave.
It has gone off a couple of times in the past few years, but now it
won't switch on. Do these switches go bad singly, since the rest of
them are fine, or is there some trick besides an electrician to switch
it back on. TIA

They do go bad.

I would temporary switch the wire with another breaker. If that
breaker won't switch back on then you have a short circuit.