User Profile

[1997CST]

It sounds like it's in the trigger. Flip the drive rolls up and jump the trigger socket across pins 1 and 2.
I know you've done a reset but also check to see if you have the stitch timer on.
Hold the trigger down and turn on the machine. This will get you into the settings
Now turn...

[1997CST]

There is an anti rotation pin on the contact adapter part. Did you see that in the parts breakdown?
197570 ANTI ROTATION PIN
196848 CONTACT ADAPTER

[1997CST]

Sounds about right unfortunately.

[1997CST]

Some models had 2 fuses. If it isn't right next to F1 than no, you only have the one.

[1997CST]

On your model there are 2 fuses. I know you probably checked them.
With machine power off, HD1 pins 1 and 3 should read 1600 ohms.
With machine on, wire 78 to 42 or any ground you should have 24 VDC.
With someone welding as you don't have a load bank wire 79 to 42 you should have...

[1997CST]

Yes and yes

[1997CST]

60-65 HZ should get you 120-130 on the 110v plugs.

[1997CST]

It will power up the power supplies but you need 3 phase for the weld output. No getting around it. Many times I've had a 3 phase machine come in and a customer complaint is it powers up but won't weld. Works fine here to find out the customer lost a leg. 3 phase are tough to sell because mostly factories...

[1997CST]

PC2 is most likely the problem. I've seen it at least 5 times. I've even seen it on newer models. Not a terribly expensive fix....

[1997CST]

MH is still under warranty. You don't need to do anything. Send it to Miller certified shop and let them do it.

[1997CST]

What's the HZ reading? Could be as simple as low RPM's.

[1997CST]

Not really. That's an old machine and I doubt a repair shop would have an old torch for that laying around. I guess you could test all the power supplies and hope for the best. Ever plasma that comes in must have a torch for me to test it properly.

[1997CST]

Been a tech since 1997 and a CST shortly after. Innovat has change hands a few times over the years. My success with all board repairs is about 70%. Some they fix every time and some they never can fix. Depends on the board I guess. Welcome. Always can use another set of eyes....

[1997CST]

Logan,
How's your % of success with Innovat? I used them years ago and switched. Just wondering how they've been since. How long have you a tech?
Not easy to find techs in this business.
Joe...

[1997CST]

From what I see in the Miller catalog all XR Push-Pull guns work on a Millermatic 252.
XR-Aluma-Pro Lite
XR-Aluma-Pro
XR-Pistol
XR-Pistol-Pro

[1997CST]

Wire 2 comes off the coil of CR2 and wire 3 comes off the transformer.
Don't worry about the wires that come off the points. Just find those 2 wires.
LoganClayton, Nice job. With you're explanation he should easily get his machine running.
Joe...

[1997CST]

I wish I could help you but I haven't a clue as what you're asking? What wires? What handle? what micro switch?
Why are you showing a picture of the voltage connect panel?
I guess my question is, what are you trying to accomplish?