Anyone of you may have original H110 and H120 assembly manuals, illustration charts, and schemas. It is nice if anyone has a copy of the Zenith Data Systems power supply service manual that included a schematic to restore or check the power supply. I do have an isolation transformer and have experience with switching power supplies.
The H110 and H120 were kit form compared with the Z110 and Z120. I recalled the motherboard already assembled by ZDS along with the floppy disk controller.
Thank you,
Steven