had this happen yesterday during show : http://vocaroo.com/i/s0TYQ9TrLCeY could not track down which condenser mic other than it was on left side of conductor...possible causes ? mic, cabling ? both ? mics go to pit subsnakes /patch bay/ 40 prs / foh.....
Ray
What console are you using? Is this an install or a portable system tied into an install?
Usually when you have a cabling problem with a mic that requires phantom power it will cause the input to clip. If you have a digital console that has the capability to see all of you input meters on one page and if it has peak hold capabilities you should be able to see this as or just after it happens.
Bad cable of bad patch bay or bad mic. I had an AKG mic that had the ground on the little PC board inside the mic get cracked because someone had wrapped the mic cable around the stand and when someone went to adjust the mic there was too much tension and it cracked the ground inside the mic.
Now it is time to find the problem you will need to test, have someone move the connectors around on all of the cabling and mics and at the patch bay while you watch the input meters.