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[Bushytails]

Being an inverter machine, the AC is very high frequency, and can't be read with most meters. You'll want to use an oscilloscope. I can't remember if there's sample waveforms in the manual or not - work has me too busy to check....

[Bushytails]

Anything >0 is likely fine when doing the diode checks, especially if it's only in one direction.

I'd start with the parts closest to the output, like the output diodes, and work back from there. The earlier checks for input circuitry will probably be good, since the unit powers up...

[Bushytails]

Download the service manual (look for one for a red-d-arc ex360) and follow the pre-power inspection checklist. It finds a large portion of problems on these machines....

[Bushytails]

I agree with Northshore. A flat plate to meet those requirements is going to be rather thick to avoid unacceptable deformation at pressure and have an acceptable safety margin. I'm not an engineer, but I'd estimate around 2-3 inches. Before looking for a welder, have a qualified engineer design this....

[Bushytails]

It's not just already broken... it's something I already have a replacement for, that's been sitting on the passenger floor of the vehicle for about three years waiting for me to install.

It'd just be a "let's learn something!" project. I've never done tig brazing, nor have...

[Bushytails]

I've got an exhaust manifold you can slip a credit card into in about a half dozen places... I got some aluminum bronze rod based on all the glowing reviews I've seen of using it for cast iron tig brazing, but I've been having a really hard time finding a sufficient quantity of round tuits to actually...

[Bushytails]

I'll definitely help you sort them out... My mailing address is...

Which ones you keep would seem to depend more on what processes you want to run... if you want to do TIG, then obviously you have to keep the dynasty.

[Bushytails]

The ln-25 manual I found says the remote voltage control option is a 10k pot. I think miller uses a 1k, but the input impedance seems quite high on the units I've poked at, and it's a voltage divider, so 10k is probably compatible. I don't have time to dig up a lincoln service manual and figure out...

[Bushytails]

Those modules are getting hard to find and/or very expensive. First step is seeing if you can get them....

[Bushytails]

Every old wire feeder I've seen comes with a piece of drain pipe or electric conduit cut to the right length......