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Neumann U77 repair
Author: Remi B
Date: 01/22/2014
Hi,

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.

Any idea of where to start?

Many thanks for your replies,

Best,

Rémi  
 
Reply
Remi B
01/22/2014
Martin Schneider/Neumann
01/26/2014