My trusty and venerable (467,000 miles on original engine, never had the head off, or gone into at all internally, except valve adjustments)daily driver has a broken computer. I've checked the fuse inside the computer at the kick panel, and it's OK. The unit will suddenly be dark at startup, and maybe a day, or a week later, it'll come back.
I don't know whether it's the computer (at driver's kick panel) or the display unit in the dash. Do you E-23 gurus have any kind of clue??