Does sound strange the thing that does not make sense is why it would drive in reverse and not forward anything as far as components on the board that failed would not drive in any direction did you check at the tb screws 1to 6to make sure that all inputs were there also does this card have built in pmts or are they on the outside on the board if they are on the outside it is possible that the forward is going bad as far as the 3and 5rec it would not drive in any direction don't think that is it