Welder gave out on me.

Yes the machine turns on fan and all. I have been using this power supply as a
designated tig machine the entire time I have owned it. Switching from AC to DCSP
polarity when changing from aluminum to steel welding process.
When the machine failed I removed all the tig leads & cooler to rule out a problem with the set up. I then hooked up a basic stinger and ground with polarity set to DCRP. This has made it easier to test.
I got the same results configured this way. I get a very weak spark rather than a arc
with enough heat to melt a rod.
I don't know enough about what I am looking at with the covers off to name the components
it is using with any accuracy yet. But I am learning. So far my trouble shooting has been no more than cleaning contacts on the switches and wire terminal ends.
I will continue to search for a copy of the schematics.......