This machine came to me without a monitor cable. Amazingly I could buy one new over the Internet for $18??? That's right, a genuine new QX-10 monitor cable! Amazing! I was expecting to have to wire one up.
Anyway, I did the big switch on tonight. Fans wirred, drives spun, keyboard lights flashed momentarily. Then on the screen appeared the words "INSERT DISKETTE".
I had to take the monitor casing off to adjust the vertical hold but it seems the basic electronics and the screen are AOK.
Now I just need to get a disk image onto a floppy and I can see what state the drives are in. They certainly spin up OK so I'm hopeful.
I'll post progress notes. Might not get around to it for a few days though.