Sony ECM 377 mic repair- schematic needed please?

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barney

Well-known member
Joined
Sep 22, 2005
Messages
102
Location
Melbourne Australia
Looking for a schematic if anyone has one. I have 4 here, one works, one dead capsule and the other two nosy preamps. I think it is the bias resistor causing noise but am unable to read the value, it is a green cap looking thing with a red mark?? The electronics are noisy without the capsule connected so am assuming it is the preamp or could it be the electret capsules slowly dying?

Any help appreciated.
 
I have owned one for 40 + years with no problems but would love to have a skitz if
anyone can share. Real nice mic BTW

Gary
 

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