so my band is trying to record our crap finally, but the behringer mixer thing that my friend has is on the shits. it worked fine about a year ago, and he hasnt used it much, but when we turn it on, it will go on for about 30 seconds, and then "turn off" and back on about every second or so. there is a button on there that will turn a light on, and this stays on all throughout, so we know its not a strictly power issue. we thought it was a short, but the lights and power flicker at fixed intervals, leaving me to assume that it is something wrong with the board inside. we dont have time to take it in to get fixed yet, so i was wondering if anybody had any advice on what to do, or how to fix it without taking it apart and/or voiding the warranty.