BBS02-equipped hardtail didn't work this AM; the display lit up, but the motor wouldn't activate. It had functioned perfectly for six years and 500+ off road outings. The connections were intact and the magnet was appropriately distanced from the PAS sensor. Looked like I'd be riding a 50 or so pound bike without assistance, struggled along for a half mile or so (with the system turned on) when suddenly it started. Was this some connector that somehow got "reconnected", a controller that is working intermittently or? HELP!!!