thanks for the response. I cracked them open, saw that the dead one's spring solder joint had broken, so that was an easy enough fix, but it is still quiet. It actually matches the level of the other quiet mic. I cleaned them as much as possible, but didn't change the level. Not sure what is going on here. Are there certain components that need to be replaced over time? I have done my fair share of recapping vintage audio gear, but never messed with microphones.
I like how easy these mics are and the low noise floor, so would prefer not to mod them, but maybe will reconsider for another day. I am recording on Monday, so was hoping for a "simple fix." I will end up doing a matrix w/ AT-853's and hopefully get something good out of it.
Thanks!