With the key in the off position the scooter emits a high frequency sound which over a few days drops the battery power, when switched on it stops. when turned on the battery registers power but the green led does not light and the scooter won't move. Sorry it wasn't the tiller board at I never touched the tiller board instead I checked the power to the green led as it's listed as power on when lit. I found that I had some of the same type of led's, so fitted one. Turning on the ignition the green replacement led lt up and the high frequency sound disappeared, the scooter then became mobile in forward and reverse, why it's original led failed I have no idea but it is it seems integral to the circuit and motion of the scooter.

Health & Beauty - The