MM 175 power issue

[cruizer]

May be the on/off switch, may be the auxillary coil wires loose or broken (mounted on the fan coil)

[kentd]

I've had my Millermatic 175 for over 12 years now and never had a single problem with until tonight. Stopped welding to eat dinner came back an hour later and it wouldn't turn on. Checked with my voltmeter and I'm still getting power at the receptacle.The built in circuit breaker is not tripped. I can not figure out why the thing will not run. I'd appreciate any suggestions.