I have a Merida 550 that worked well until recently when the assist completely stopped kicking in.
My guess is that the controller is the problem in which case I am probably going to have to replace it with a controller/ throttle system-- does anybody know of any other options?
Another possibility is that the pedal sensor has stopped picking up the pedaling motion, but I am not sure how to test this.
The motor works-- I tested it with direct voltage.
Anybody have any success solving a similar Merida problem?