S. Karki, Dave Barker Troubleshooting low freq Mic at ENDY and CS: 1. The power to the DAQ (sitting on top of each microphone) was reset by pugging off the power supply cable and plugging it back in. 2. The signal cable were switched to a known working channel. Both resulted in no difference to the signal output suggesting that the microphone itself could have been damaged. The signal from the mic seemed to have stopped since the last power glitch.