dc freezes on date/time screen help

[sdrtodd]

dc freezes on date/time screen the controls wont work to change the date or time ive opend up the dc and its clean inside with no loose connections and it has been treated well/never droped.

I haden't used it for a couple of months but it always worked fine before.

on diffren't forums I have found a couple of posts from people with the same problem but with no answers

can anyone help