Yes, that jumper wire is to connect the gate of the MOSFET to the resistor that connects to it by the track on the board that is WAY too thin and probably broken where it joins the pad. I beef all of these tracks up on my replacement boards - there is NO cost difference and it escapes me why they make the tracks so fine - there is no logical reason???

Considering the board originally started out as one whole sheet covered in copper that gets eaten away to make tracks.. having thin tracks makes absolutely no sense whatsoever.. in fact - quite the opposite