I'm trying to troubleshoot a serial Optipac and Happ trackball. This setup was working at one time, now it is not being detected in Windows as a mouse.
Using my multimeter, I am getting the 5v from the PC to the +5v on the Optipac power input terminals. What should my reading be on the Player 1 +5v terminal? I'm assuming 5v, but I am only reading .16 on the multimeter.
Could there be a problem with the trackball or Optipac? What would be the next step for troubleshooting?
Thanks.