My 4100 saw is doing the exact same thing. Changed switch, thought it worked, but it started acting up again shortly after. Acts like it is trying to start when you turn it on, but doesn't. I tried other outlets, and sometimes it seemed to help, but always temporarily. Tried changing out the outlet to no avail. Definitely the saw. Have only had it a couple of years, and it has very (very) few hours of use. Not real thrilled with Bosch products right now!