The batteries seem fine. I'm getting over 25 volts. The controller is doing the single flash every couple seconds. I can see the Amber light go on when I move the tiller down some and go off when it's all the way down. What I don't see is anything on the screen. No beep. It has power, now I'm wondering if there's something wrong with the tiller. I'm running out of ideas.

I wish I could get my hands on the wiring diagram.