Millermatic 200 problem

[IK746]

I went to use my millermatic 200 today for the first time in about a week, the wire only fed a fraction of an inch and stopped, also it looks like the case is electrified since I got a bit of a shock, even with the power switch off. I couldn't see any evidence of a short yet. Any idea where to start looking?

[H80N]

I went to use my millermatic 200 today for the first time in about a week, the wire only fed a fraction of an inch and stopped, also it looks like the case is electrified since I got a bit of a shock, even with the power switch off. I couldn't see any evidence of a short yet. Any idea where to start looking?

is your ground/work cable properly connected to the workpiece??

do you maybe have a piece of wire caught between the spool and the case?? check the backside..

[IK746]

is your ground/work cable properly connected to the workpiece??do you maybe have a piece of wire caught between the spool and the case?? check the backside..

I checked the backside and I don't see any wire to case contact, it's all tight to the spool. The ground cable is attached straight to the welding table.

[IK746]

It looks like my cr1 relay is throwing a fairly long arc when the trigger is pulled any way that could be related?

[H80N]

Have you taken a case to ground measurement with a meter....??

to see what potential is on the case.. if it is AC or DC... and what voltage..

as well as between the case and the legs of the input cable..

[H80N]

have you downloaded the manual for your serial number MM200...

there is a schematic in the back..

http://www.millerwelds.com/service/ownersmanuals.php

[cruizer]

You have 120 off the 230 primary case going to ground. Likely a failed connection in the plug. Won't throw the breaker but it'll wake you up quickly. And the machine doesn't like it much either.