Hello all, I dove back into the Osborne again ... just to recap, on power up there is no video output. Nothing is obviously damaged internally (no broken parts, loose connections, burn marks, etc.). Also, it does respond to the keyboard, as pressing "Enter" after power up causes the floppy to spin (as if looking for the disk you just inserted). Tony suggested tracing the +12V lines to the CRT. My trusty digital multimeter shows me +11.88 volts all the way to the connector on the neck of the CRT. I don't know if 11.88 is close enough to 12, but that's what I get. The CRT neck does not glow at all.... What's the next step, assuming the 11.88V is a "good" voltage? Rich B.