Low Voltage on 1997 AMH UltraMIG 200 Synergic Welder

[diablo9987]

I have been trying to get my dads old MIG welder back up and running but could not get a good stable arc going (tons of sputtering even feels like it cuts out for a few ms. just guessing though)

so started trouble shooting from the manual and came across the voltage stated in the manual that should be on the capacitor is not correct. it wants 14 - 26 VDC and I'm only getting 12 - 15.5. one of the thumbnails will have the section I'm talking about. so as usual it says to just replace the cap first but I pulled it out and tested it to the best of my ability's but it's a bit of a beast so made do with what I had and it seems fine. Measures 144000uf but that was done through an arduino, ESR of 0.14 and leakage was 6ma I think, it was a few days ago.

so my question is should I replace the cap. if so will any of these work

https://www.digikey.ca/en/products/detail/kemet/ALS70A134NF063/6928354  - Same uf but will require work to get it to fit into the welder because they use bent aluminum plates for connections.

Or

https://www.digikey.ca/en/products/detail/kemet/ALS70A274NT063/6870548 - Seems to be the same footprint size so should drop in just fine but is double the uf.

If neither any you can recommend.


If it's not the capacitor then it says to replace the circuit board but if I have to do that I might as well buy a new modern welder for the price they want for it $900 for the board plus $400 for micro processor.
I'll upload some pics of the board also if any of you want to take look as I also found a blown tantalum cap. I tried replacing it with an equivalent ceramic I had on hand but it made no noticeable difference.
if you need any other info let me know I'm trying to condense a weeks worth of trouble shooting into a small post.
 
Thanks

[diablo9987]

Half my images are missing here are the rest hopefully

*edit again its just picking random images too upload