So, this would be better on an AV forum or a repair forum -- if someone wants to direct me to, or crosspost this, to a _viable_ newsgroup, feel free.
The stage monitors at church are cutting out. You'll be up there singing along and suddenly you can't hear yourself. We know it's not the monitors themselves, because they'd all be cutting out at once. I'm suspecting it's not wiring, because there's no popping or scratching: things just go out of a sudden.
I'd like to put something at the output of the mixer board and at the input to the monitor amp (they're 25 feet apart, with in-floor cable between) that at least gives a sound/no-sound indication. I know perfectly well how to make something -- if I do it the hard part will be NOT making a color organ. I'm wondering, though, if there's something out there allready. Ideally I want something that will tap into an existing circuit that has XLR connectors on it, that gives a visual indication (like a flickering light) when there's sound on the circuit, and that can be seen from 25 feet away.
Any suggestions?