We are using a Bullfrog light desk, it has been installed for approx 4 years. Lately we have begun to notice that several of the sliders intensity bounce between what it is set for and +/- 1. This happens when no one is touching the slides, it just bounces back and forth. Is there some time of maintenance that should be done to the board,i.e. using canned air to blow out the sliders, or some other type of end user maintenance. The other issue this causes is that not all the lights will turn off when the sliders are pulled down all the way.
One item to note is that the board is never turned off, should it be?