I bought a bar top Game King 4. Tilt identified by MPU as a 3508. Those aren't discussed here, but the 3502s are. This seems to be an upgrade from 3502 before the 3802 and it looks the same as a 3802 without a soundboard enhancement. Now for my question.
Some KEYs call for pressing a Test Button on the front of the MPU. Mine lacks one, but in comparing it to MPUs with Test buttons, it appears that there are two wires from J3 right above the GME that run to the test button on the front of the MPU tray. My board has the same J3 connection post, so I was thinking about connecting a test button to it and was looking for input advice before doing that. Any thoughts? Also, is the test button an actual on/off switch (to press to toggle for each action) or is it a press and hold button that is only active or activated while holding it in?
Redneck Button Fix: When I bought this, I found that the Deal/Draw button did not work. Upon examining it, one wire was disconnected because the post was broken off flush with the bottom of the plastic button housing. I straightened out a paper clip and pushed it between the broken post and the plastic for a tight fit. Then I connected the connection terminal to the other end of the paper clip. It Works! How's that for a redneck fix? I admit that I'm an Ohio redneck and we have fixed a lot of cars with bale wire and duct tape. We can get in a car with a coat hanger and start it with a screw driver, so this was a cinch to figure out. I'll replace the Deal/Draw button later. Works for now.