I haven’t been able to work on the machine (or table, depending on your parlance) in a few months, but I have this update I did last year. Replacing the original orange dot matrix display (DMD) with a new ColorDMD.
Before, with the original dot-matrix display (DMD)
The speaker panel removed from the back box with the display board and RF shield showing
Getting into it, remove the display board
Next remove the RF shield, exposing the back of the DMD
OG DMD removed (front)
OG DMD removed (back)
New ColorDMD (front)
New ColorDMD (back)
The speaker panel
The power supply board and the J16 connection that will be used to power the ColorDMD
The ColorDMD power tap
Power tap in the J16 connection
Assembled with the original power cable and ColorDMD power cable
Power connections and ColorDMD power cable secured
ColorDMD power cable with the excess secured with other back box cables
ColorDMD on the speaker panel with the 4 display posts, grounding wires attached at the top left and top right
The display board mounting on the ColorDMD, the original RF shield did not fit over the ColorDMD circuit board
With the original display connector, display board power, and ColorDMD power connected
Connector between display board and ColorDMD circuit board
It works! (sorta, this is the wrong ROM, I figured out and updated for the video below)
And video with before and after goodness!
The ColorDMD instructions say the connecting cable on the ColorDMD board should have the red stripe facing the top and on the display board have the red stripe on the right-hand side. The picture below has this arrangement, with the picture rotated so the top of the board/display is facing up.
This did not work. Not sure if it’s an error in the instructions, or how I’m reading it, but to get the display working, I had to configure the connector as pictured above, with the red stripe on top on the ColorDMD board, but on the left side on the display board.
