Bonespa, not sure where you are located, but any respectable audio shop / vintage repair shop should be able to solder in a new one. I’d contact Axiom to get a spec for it or they may have some they can send you? ( maybe). I’d start there. Of course the other option is to purchase a new plate amp from axiom. That would be the most solid repair long term.

M60ti Hafler9505 & JFET Pre,Axiom Transformer. M3 Marantz PM7200 Dual 606 Denon 2700 M2 Yammy RX595