Need help. I have an issue with my sound board on my MM. The connector to the cabinet speaker (J504) pin #1 and #2 are both showing 14v. I checked another game and they are not anywhere near this. I replaced the diodes right above the connector, but that was not the issue.
When connected, the speaker is starting to hum and I can smell it burning. Obvious due to the voltage. This happened suddenly while playing. Something had to blow.
Anyone have any suggestions where I can start to look?
Thanks.