depends on terminal plate damages, if bad then replace it with proper substitute with wire goes into it being lengthened and soldered its end to the plate with flux and/or (additional) mild/strong acid if too difficult doing it with only flux, then must quickly be cleaned up with IPA applied cloth, and get wiped, dried outright, and put and position it back exactly as it was
if not too bad just clean up by aid of cooking oil mixed with mild acid and a bit of water (should always readily have this chemical kit in small closed bottle) while rubbing it with fine sandpaper, cleaning up with IPA applied cloth and drying it up fully