I know my code & have reprogramed my Heidelburg VI several times.  I must've
confused its brain- pulling & replacing its fuse, then leaving it on for 1 hr.
still won't display 1000 after holding AM/FM & SCAN.  Bentley & Unca Joel in
the archives said "dealer." but I'm hoping for listees who've "been there,
done that."

What are the 4 paperclip-size holes at each corner?

Pat & Tugboat, the '90 Syncro Westy workhorse