Rode NT2a - Damaged

I got this mic second hand.

Apon plugging it in and doing a couple of vocal takes I noticed a lowend hum on the eq of the mixing console.

I changed the polarity pattern and it left.

We recorded multiple vocals for a track and midway through the session the hum came back but much louder, we then swapped out mics.

I have good experience servicing gear. I dissembled the mic and noticed a tiny piece of the the side of the mother board (not near any of the electronics) missing.

I presumed it may have been dropped before.

I cleaned the motherboard, body and diaphragm casing. I checked all of the cabling and soldering points and everything seemed fine.

Im not willing to go at the diaphragm as I know they are very delicate.

I said I would put it up here and maybe someone with more experience then myself might be able to get a sweet deal and the mic can get another lease of life.

Open to offers