[lumpkin666]

If you pop the cover off your actuator (where the wires go in), there should be a nut or slot that you can insert a tool to manually crank the dish back the other direction. You might manually turn it back aways so that you can swap the wires and ensure that it's really trying to move the same direction regardless of which wire you have on the positive side of your battery (i.e. it might seem that it's trying to move in the same direction simply because it can't move at all).

If it appears to be physically difficult to manually move in one direction or the other, then you may look at lubrication/grease to fix it. If not, then you'll either need to tear the actuator electronics apart and figure out which part was blown, or possibly replace either the actuator or just the motor. I know that I've seen advertised replacement motors (without the actual arm) that seemed pretty reasonable in price.