I’m both throroughly embarressed and relieved. The Mac Genius was able to fix my Powerbook.
The steps he took were:
- Re-sat the Airport card. I didn’t know that could be a common cause.
- Reset the power manager. I did that.
- Reset the open firmware. At this point, the screen was working. When I did it, I had to use my external display.
All is well again and seeing as a little bit of my pride saved me several hundred dollars, I think I can suck it up. I’ll have to hold off a little on applying for a part-time Genius position though.