tac50/04 629 overvoltage drive faults

changed capactor bank and regen igbt,check regen resistors and circuitry went over all connections on the quantum drive any other suggestions

a lot of times you will get 1681 with 629 faults on the tac50/04,go over every single door lock check wire connections,burnish door lock contacts, ohm out door lock circuit ,before you get into changing drive parts,