Find the 5 volt test point on the power supply board and MPU board. Then turn the machine on. Check voltage. Is the 5 volts reading less than 5 volts ? Keep checking to see if the voltage slowly rises to normal. If so then you probably have worn out capacitors somewhere in the 5 volt circuit.A common problem on older games.
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)!