We replaced another GE MW that lasted over 10 years with this model, which flat-out died after 18 months.  The appliance repairman diagnosed a bad inverter, which was pulling too many amps and blew the fuse.  What a disappointment!  I guess we were naive enough to trust the GE brand and not opt for the extended warranty.  The cost of repair will well exceed the cost of a replacement.  Unfortunately, the built in area will only accommodate this size, so we are going to be stuck buying another GE but with warranty in hand this time.