Got some information from Robin in service at Miller.
Was told that the contactor (Part # 188009) is a part that becomes noisy over time and doesn't degrade enough to affect the performance of the machine.
I'm replacing it anyway because its annoying. The part is apparently...
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Loud Buzzing Noise (EconoTIG).
A couple days ago i heard a wild loud high pitch buzzing noise come from my machine (3 year old EconoTIG). I thought it was a weird fluke, but now 3 days later, wether I'm welding with a arc or not, the noise is now constant with the pedal down.
The machine seems to weld fine, but the...
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