help: ez1073-500 mic input clicks and pops

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mulletchuck

Well-known member
Joined
Jan 9, 2010
Messages
1,132
Location
Midwood, Brooklyn, NYC
howdy.  So, one of my ez1073-500s has stopped working on the mic input circuit.  The line-input circuits work fine. 

Symptoms include:  No signal level. 
Oscillating click that gets louder if i physically touch the microphone that is connected to the module. 

Where do i start for troubleshooting?  I disassembled the unit and nothing appeared broken or unsoldered.  this unit used to work fine.  no caps appeared blown.
 
Try another microphone and/or microphone cable before digging in too deep (you've probably already done this, I'll bet.  ...but just in case).
 
Just had a mail from Chuck... it is the rack slot itself which has a bad connection.... works fine in another slot.

Colin
www.audiomaintenance.com
 
yeah, i'll have to de-house the backplane and check the joints for that one slot.    Right now, the Input xlr Pin tied to ground/chassis won't make a solid connection for whatever reason.   
 
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