Moderator Post (s) for this thread: >Garage door openerbyBillhart on 11/10/2007
Have you tryied changing the codes by chaning the dip switches on the remote and change those on the unit to match or use the Learn button depending on which model you have?
You won't gain anything by replacing the control board, unless yours is defective.
And while you can get a add on reciever/remote kit they run about $75.
For about $125-200 you can get a new unit and they have safety sensors.