Another Data I/O 29B Chip Programmer Will It Work?

I was Browsing Ebay I came across This Data I/O 29B Chip Programmer It was Missing the Unipack

Seller had it’s condition listed as “used and tested/works” I did not need 3 Of these so I offered what I thought was reasonable for one of these programmers in a power on condition missing the programming pack.

This is What Arrived.. Unboxing Video… 12/31/2024

Insomnia Diagnostics… 1/01/2025 Jump Start it!!

Testing with Known Good Roms.

This unit should be repairable.

Connector on the Back is the Handler (Option) Schematic.

I looke and could not find any photos of the Handler Board 410-1984A on the net.. So Here is it Installed. I Labeled the rom’s that came with this unit.

Photos of Top and Bottom 410-1984A Handler Board.

Data I/O 29B Main Board with Handler Option Board Removed.

Filter Board (Power Supply Schematic)

Data I/O 29B Service Manual and Schematics

Making Progress on his one.. There was a Screw Under the Power Supply that shorted it out. + There no communications was form a dead MC1488/1489 chips I replaced them with the USB Modification. After servicing the power supply I proceeded to check the calibration. Found it missing the -5V prob was taken out same time the MC1488/1489 were taken out as it is ona pin for the serial connector. I was out of 7809’s but should arrive this week I will update with a follow up video.