I have the ultimarc IPAC 2 since 2016. It worked great...and it still works great..if I dont use "COIN 1".
If "COIN 1" is set to a key, it spams the selected key on the keyboard, as if it was stuck on the keyboard.
I checked cables, the button and even upgraded to Firmware 1.50a.
No matter which PC and/or Laptop I attach the IPAC 2...when "COIN 1" is set, it gets a continous signal.
Even if the cables arent attached to the arcade button.
I can play fine WITHOUT having a key set for COIN 1...except I cant use COIN 1 :'(
Any idea ?