Hi,Welcome to Just Answer, My name is XXXXX XXXXX forward to helping you today.
unfortunately the only way to fix this is to replace the control. the digital readout is all one piece and is part of the control. is really the clock assembly itself. you cant just replace the readout.if you go to Sears parts select and put in you model # XXXXX can order the clock.
It wash purchase in 2000; it is in the house I just bought, so this is wy I dont know since when the problem exist