Will like to have detailed information about GE Health Marquette Case 16 Please.

I have a Case 16 system with the 2000 treadmill.  Have had it since 1994 and it has been a real workhorse.

Now, however, the monitor/screen has stopped turning on. It had gotten to where you had to turn it on an hour or 2 in advance before it came up, however, now it won't come up at all.

Does anyone have any suggestions or know of anyone who could possibly repair?

Thanks