Your model is probably the BT1S1, the Original Black Bradley smoker. Is the temperature adjustment under the door? If resetting the plugs don't work you may try the following.
If the temperature adjustment is below the door, the other possibilities could be the temperature circuit board may have shorted out. If there are any cracks above or near the temperature adjuster, water or other fluids can seep in and short out that circuit board. If that happens you will not get power to the element.
If the power light by the temp slider is not working it could mean no power going to the cabinet, or power is going to the cabinet, but is cut off by either a faulty temperature circuit board, or the fusible link has blown, or you tripped the over temperature sensor and that sensor failed to set.
If that light is on, then it is likely that your element is no good.