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Neumann U 67
Author: Mário Santos Leite
Date: 10/02/2012
Hello.
I have a U67 with a problem. I can´t hear nothing but a 50Hz hum (i mesured with a scope). Not a single reaction on singing or scratching it to hear audio. Nothing! Just the 50Hz hum.
Do you guys have any clue on this? I measured all the voltages and they are correct. The mic´s tube voltages are also correct...

Thanks a lot
Mário  
 
Reply
Mário Santos Leite
10/02/2012
Klaus Heyne
10/02/2012
Mário Santos Leite
10/04/2012
Martin Schneider/Neumann
10/04/2012
Uwe Sattler/NeumannUSA
10/04/2012
Uwe Sattler/NeumannUSA
10/04/2012
Mário Santos Leite
10/06/2012
Martin Schneider/Neumann
10/08/2012