Home Forums General Discussion Technical Questions Dover Oildraulic 1982 not opening door

Hello all,
I have a Dover oildraulic 1982 simplex that is not opening the door.
DO relay as well as well as OHS do not get energized. I see in the prints that one end comes from the SOLID STATE CARDS. Is there a way of telling if it is one of the cards that is faulty, and if so, which one?
Other that the prints, I dont have anything else on this elevator.
CD gets energized when the elevator is traveling though.
Thank you in advance.