I have an s220 that once in a great while - maybe twice in 4-6mo - when you go to turn it on nothing will happen and no input will read on the screen. I could have just driven it with no problems and the next time I start it there it is. So far it will do it one time and not for awhile again. Would anyone know what to check to see where the problem is? I thought about unhooking the battery cable to see if that resets it somehow but have not done that yet. Skidloader runs fine otherwise and has 5200 hrs on it.