I know there is a lot of information on this out there but I am unable to nail this one down.

First, I believe both sensors are working. The trough sensor shows both LEDs lite when there is a steel ball in front of is. When the power ball is in front of it only one red LED shows. Im guessing this is showing me that its working. Game doesnt acknowledge the power ball once it's in the shooter lane.

The subway led comes on when a steel ball rolls over it. Im assuming this is correct in identifying a steel ball. Then the led stays off in the trough when the Power ball rolls through.

My questions:

From what I'm seeing above..... Does that seem correct?
The error I am getting is gumball diverter malfunction. It works fine. Where do I start in solving my issue?

Thank you in advance.

When I put game into switch test mode, both trough switches work (Camera and Piano). When I use a steel ball the proxy sensor works and the trough works just before the Proxy. This makes no sense. Why would the game not recognize the that the power ball came through? Really scratching my head on this one.

Any and all help is much appreciated

I gota believe this is a logic problem. All switches before and after proxy good. Proxys also good.. Does anyone know what I need to check on the MPU?

LTG. Thank you for responding

Diverter functions properly

FIXED!

OK, Here is what I did. Popped out game rom. Reflowed solder on socket. Popped rom back in and everything works now.

Crazy

Ok......
Played about 6 or 7 games and back to the same problem. I gota think this is a chip/rom issue. Maybe I'll try and burn a new rom.

All sensors and switches check out in switch matrix. Shows working 100% ill getbsomempics of MPU. Even though this has recently been added to my collection I cant recall any acid damage. I NVRAM'd the MPU already

Thank you for responding

So I was finally able to get back to this....

I have confirmed it is on the MPU. I swapped two different MPU's and they both worked. Powerball is detected.

I am now try to chase down which component is the problem on the original MPU. Does anyone have any idea? Again, everything works in the switch test, it just just recognize power ball during play. Works perfect except does not recognize power ball with original mpu

Any help is much appreciated.

Thank you in advance

Bump

Yes. Both sensors work 100%. I can play multiple games with different mpu and zero issues.. Original mpu and the brain doesn't do what the switch matrix sees. Very odd