Fix that worked for me:
Stand on the translocator pad.
Delete it from the world.
Give yourself another broken translocator and the parts.
Place the translocator and repair it.
Server commands:
/gamemode 2
# (stand on the translocator)
/we clear 1
/gamemode 1
/giveblock statictranslocator-broken-north 1
# (also -south is an option, but how to tell?)
/giveblock metal-parts 2
/giveitem gear-temporal 3