Mag 5 HS Rigger is 4 years old, I bought it new. Stopped working at all under warranty- took it to Screwy's got it back, worked fine for 3 trips and stopped working completely again. Took it to the guy near Lockport, he fixed it(not under warranty) then it worked for 2 trips and stopped working completely again. Board was replaced each time. Something more must be going on with this thing- was going to have the board removed this time. Any thoughts?