Repeating sound "click" in reverb?

  • Hey.. I'm getting a sound glitch in my reverb.. sounds like a staticy click that changes repeat time when I adjust the delay on the reverb and stops when I turn the reverb unit off... But comes back when I turn the reverb back on...

    At first I thought it was a switch picked up by the delay, but it's definitely the reverb, and happens when I turn the reverb on without hitting any of the switches .. thoughts?