CNC control board repair MaxNC CL, Bad Mosfet, Unique Quadrature Closed Loop Steppers, Mach3

This old CNC board came on my Offerup CNC machine. The is a very interesting board that runs quadrature mode. Its increadible that you can run a 4 axis CNC machine in that little box. I have all the functions working on mach3. The board is way to cool not to fix.
https://www.amazon.com/Auto-Ranging-Temperature-Capacitance-Alligator-Clip/dp/B07P7V3YNT?crid=35QHRCZNQLGS3&keywords=multimeter+bside&qid=1663040567&sprefix=multimeter+bside%2Caps%2C133&sr=8-11&linkCode=ll1&tag=fintechcomm0f-20&linkId=5743835b24b7297318fbce7e1d0350ce&language=en_US&ref_=as_li_ss_tl

My 3D printed Stand
https://www.thingiverse.com/thing:4504933