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I might have another one coming, but for now it is unreachable because of snow :) Also a Kaypro II.

Did have some stability problems on the machine at cold boot - replacing all electrolytic capacitors on the power supply resulted in rock solid machine. They were 40 years old after all!

Having my Ozzy now working, I would also like to try that ROM. Anyone for a dump?

The brightness control did not "go low enough", and the usual G2 adjustment trimpot is not present on this monitor. Some resistor in the HV circuitry might be aging and changed value, but since I didn't find a schematic for the monitor, and the G2 wire was clearly labelled, I took the easy way...

Finally, it does work! I already put it all together, but couldn't stand the CRT retrace lines and light screen background. Now this usually needs adjustment of the CRT G2 voltage, but it is not available on the Zenith monitor on my Osborne. Locating the G2 input to CRT fortunately was easy...

Found some pictures to clarify the keyboard cable installation. Floppy drives were dead, so had to replace the disk controller socket also, but now the machine and both drives works fine, except some return scan lines are visible on CRT. I did not found a G2 adjustment at the monitor, so that...

Some progress. The CPU held at reset was due to a bad CPU in a bad socket (the machine has spent last 30 years dismantled in a cardboard box, in a not very controlled environment). A new CPU and socket fixed that. Still no boot, but of course the boot ROM socket was just as bad. After replacing...

CPU has good clock, but something is keeping /RESET low. Going to check the reset circuitry next.

Hi, just got a dead Osborne 1 with a double density board. After the first tests, looks like the power supply is OK. Powering up the main board, the onboard beeper keeps beeping, and CRT monitor filament does not light. Does the boot rom check for keyboard or disks at power up? I did not have...