When the machine turns on it gives the adjustment failure error. previous owner had left batteries in the pack too long. He thought it only fried one of the pads in the holder. Even when I know I have a good connection in the holder with the 3 AA's it still gives the error. My thoughts are it corroded the connection to board itself? Next step remove the board and install remote holder. Does this seem like the correct process. Or do I need to check voltage from the battery holder first.

Here’s the chips below the rom

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When I check voltage at the circled points I get 4.6. So the battery pack is working.

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I switched out th batteries turned off and on. Still got error. Took them
Out again and again attempted. Same error

I did got back into audits. Set to free play and tired it out. The. When power off/on got the error

I had the door open and closed another time

Thanks. I wasn’t sure if there was another spot in the board I should check for voltage. But I will switch out a u25

I cycles thru to where it went into play mode and free play worked. So it must have saved.. thanks

Pin 24 of chip u25? One lead to pin one to ground?
And it looks like it’s not socketed

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Not sure if relevant but this is what was done prior. 7 years ago he said

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