pickup,please

[BREWER]

NEED a neck pickup for a 71 univox 335 copy.mine are chromed and have both adjustment screws and 6 other non-adjustable terminals.i checked the toggle switch,hoping that a wire had come loose,but no,and the neck pickup for the same,but no luck,so i can only assume the pickup is bad.can you open them up and repair them?i'd rather just replace it.it doesn't even have to be a perfect match,but it would be nice.thanks for any help.