Approximately three years ago, I established a tri-switch configuration with a Maestro dimmer switch with two companions. Until recently the switches performed flawlessly, but a couple of days ago none of the switches worked and I could not turn off the light. Yesterday I took all three switches from the wall to check to see if any wires were loose or disconnected, and I found nothing. After playing with the Maestro switch, I was able to use it and turn off the light, but again it stopped working and performance was intermittent at best. I have read online that sometimes the switches just die, would that be what I am experiencing or am I missing something? Any assistance would be greatly appreciated.Thank you.