I just brought home a beautiful Maverick, but it was DOA. So I did a little digging, and found it had a blown F1 7a fuse and a burnt pin 1 on CN8. I also noticed that the MPU looked like the resistors had been burned up. So I replaced the fuse, cleaned up the connector, while I wait for a replacement part... and tested all the resistors. They all check out at 26-27 ohms. So, after replacing the fuse and cleaning the connector it powers up and plays.
However.... it was acting like a ball had drained, while it was still in play. I have narrowed it down to the 5 bank drop targets. If target 1 is activated, it also triggers the other four. Also, it doesn’t allow the other four switches to register on their own, when it is active.
The other four, only activate themselves. However, hitting one of them while the game it in play, triggers a ball drain. Even though none of them trigger a trough switch.
*Correction* It seems as if targets 5 and 3 in that same bank are triggering two unused switches. 9 and 10.
The diode on each switch tests fine, so I’m not really sure what I’m looking at here. Any thoughts?