I have a Quicksilver Express 8268 Diesel A (powered) unit that will not run forward. It would run reversibly forward and backwards when I first got it but now will only run backwards.

There doesn't appear to be a directional switch that I can find. The circuit board has an ID # of 00-0103-00. There don't appear to be any broken connections or obvious damage to any of the components on the board. I have checked the connections and all appear to be intact. Not sure what might have caused the problem unless a component on the board has failed.  Photo of circuit board attached.

Any ideas on how to remedy the situation ?  It would be fine if it only ran forward.