We have a Gold's Gym treadmill (model # GGTL39608.4). Only certain buttons work on the control panel. Only the 1 mph and 7mph button work. The stop button does not work and neither do any of the pre-set workout buttons. We have opened the panel up to see if there were loose connections but, there was very little there. It doesn't even look as though the location of some of the buttons are connected to anything electrical, underneath.