We've had this ion board for a number of years and it's been fine, but it has begun turning off at will. Whenever the board is jostled or bumped it shuts down. Whenever you try to start it up again it make a shrill beeping noise and refuses to start completely. The screens never come on, though the controls light-up. Usually when the board is left alone for a day it runs just fine when we comeback, however this time after it started up again it shut down the instant it was nudged. I need to know why it makes the beeping and shuts down, and how to make it start up again promptly rather than taking a day or two.