I went to turn on it on to test a new game and only got a color screen. Tried out games that I one worked and it was the same. Cleaned the contacts, tested continuity and made sure voltage from power was correct. My in Sister in law came by that same day and her son was in my room next to the arcade while I was upstairs. The MoBo didn't have a game in at the time. I can't say for sure he did it, but I feel like I've ruled out everything else.That is a standard chip. Why do you believe that someone has changed the value on your pot-meter ?
It says Rev 6 on it.Can you snap a picture of the dial as it is now ?
Also there used to be a label on your chip stating chip version, can you post yours ? Like ESP REV 6 ...
This is how I measured mine back in the day...
https://www.arcade-projects.com/threads/taito-f3-volume-dial-setting.3553/post-52197
Outside of what I mentioned, is there anything else I should be checking? Can this damage the game boards or just the MoBo?To me it looks like it's in the correct position. I would make a note of where it is now (tape/marker) and then try some simple adjustments to see if you get different behaviour.
Voltage always drops over a harness, one reason I try to avoid jamma extenders.Just wanted to put an update on the issue. The problem was voltage. The PSU read 5 volts but there was a .5 voltage drop to the jamma edge. I raised the power and it works, but now I have 2 MoBo's cuz I bought one after troubleshooting lol. I didn't even think there would be a voltage issue like that.
I touched the fucking dial (moved it "slightly") but the game runs without Issues. Can i thank my lucky star and enjoy a round of Elevator Actions Returns or do i need to get that dialed back in before using the board further?
tl;dr is the dial set right if the Game plays with sound?
The dial is for the reference voltage for the Ensoniq device. Each device is calibrated individually so...
https://mobile.twitter.com/philbennett3d/status/1408012086194499586