I have a pair of non working Neumann U77 which I intend to repair, if possible.
I hope some of you can help me, I'd be greatfull!
The first U77 has the following symptoms:
It sounds ok for several minutes, then no sound during 10/15 seconds, and the signal come back, then again, and again... I believe it might be a capsule problem related to moisture.
The second U77 produces no or very low sound, but microphonics noises are transmitted when I touch the body of the mike. Also the directivity selector is blocked on cardioid. It's only mechanical but maybe it has something to do with it.