Millermatic 200, how many versions were there? Which one do I have here??

[denwhit]

I see in your signature, you own one too. Are there any parts, ie; drive rolls, ect. that one should stock up on in case they get hard to find in the future?...

[denwhit]

You are correct!

Rechecked the serial number and it's KB, not K8. Mine has the 14 pin connector. I've been able to find the WC-24, Spoolmatic 30A, and Roughneck gun so should be all set. I've been told to run .030 wire for this machine as I'll be welding metal 1/4" or less probably....

[denwhit]

Thanks for the reply and good advice. Should one replace the capacitors as a preventative thing or wait for a failure? If I was told the truth, this machine was purchased in the early 90's and then the older guy died 6 months later so it was only used for a few months....

[denwhit]

As I do research on my Millermatic 200, I see lots of variations. Some have "CP" in front of the 200, some have white panels, etc. etc. I'll try to post a picture but have had zero success doing that from my desktop. I guess I'll describe it in words: Black panel, SKP-35 unit top right...

[denwhit]

Uploading pictures

I can't seem to upload pictures even using my desktop. The button "Manage Attachments" lights up when I click on it, but nothing happens ???

[denwhit]

Fixed it!

After getting good ohm readings across the diodes in the bridge rectifiers, yet getting screwy voltage readings, I just decided to replace them both. That worked! She's back to performing like a new one. I guess the lesson is that when the actual current hits those rectifiers,...

[denwhit]

thanks for that...

[denwhit]

Both switches are in the up position....

[denwhit]

I hope mine turns out to be that easy (cheap fix). What reading, voltage or resistance, showed the problem?...

[denwhit]

Had a minute this morning to check those out and I get 30.8 and 12.1 ohms....

[denwhit]

I'll check those when I get back from a four day short vacation. When I get back, I'll take all of those resistance readings. Is anyone looking for a low hours 20 hp Onan motor? I'm about to give up. If it's PC2 or the windings, I think it's totaled and will part out. Thanks for your help, I really...

[denwhit]

LEDs on PC2 are not lit

Should two of these be lit?

[denwhit]

SR2 and 3 are good, fuse F1 is good, I cleaned the rings and the brushes are making good contact. Had about 24 ohms between front ring (from control panel) to middle ring and about half that from middle to back ring....

[denwhit]

I was hoping you would respond as you are the expert! I'm thinking my problem might be with the slip rings because I did take the brush bracket off and look at it and just reinstalled. I can't think of anything else I did to cause the voltage at the convenience plugs to go from 120 to 24. Thanks...

[denwhit]

Went backwards

Well, today, I took the covers off and decided to check some diode readings, look at the brushes, etc. While taking a wire off CR 2, the lead came out of the diode. So, off to the electronics store. Luckily they had one. Replaced that and started it up. Now, instead...