When I activate either the Volume Up button or the Enter/Test button the game responds as if I pushed both buttons simultaneously. I replaced the four button switch and got the same results. I replaced the coin door interface board (A-14102) and got the same results. I grounded pins J205- 8 and J205-9 separately on the MPU and got the same results. The MPU is relatively new, its the Rottendog MPU089. I don't know if the previous owner had a problem with battery leaks. Any ideas on what to try next?
New! Dark mode!
Browsing Pinside at night? Getting tired of all the white? Switch to dark mode using the button in the top right (or CTRL-B)!