We've repaired a bunch of these for the 38400 2K machines, mostly with malfunctioning displays. We can get new displays if yours is cracked. Robinaire P/N is RA19740 for the 34800-2K but I get the impression that the board may be used on other models by loading different firmware. Stickers on the boards say RA799-I1827, it is called a 'Multi Purpose Control Board'