Spindle veered direction, bit got stuck, control board unresponsive

This is your same issue… it is a short in the spindle output Moffett

If you don’t have the part and aren’t comfortable soldering I would just purchsde a new board, they are about $30

https://www.amazon.com/Controller-GREESUNY-Connection-Engraving-1810-PRO/dp/B091MVY72F?keywords=3018+controller+board+v3.5&qid=1637085087&sr=8-13&linkCode=sl1&tag=hisnhershan00-20&linkId=da8d8ac51a1aaf251b8b4b06eb4616ac&language=en_US&ref_=as_li_ss_tl