Hello guys,

Everytime u turn my BBBB from Bally on i get the adjustment failure.
When i touch switch 2 on the leftside on the CPU board the display tells me.

MEM.PROD FAILURE.

What can it be?

Bad U25 ram? Bad diode?

I have noticed that the cables from the battery holder are soldered on the board can the problem be in there?

Thanks

Everybody much thanks for the response.

I have changed the old battery holder for a new one outside the board.

Can it be something like a bad d1 or bad u25 RAM?

With my meter on the ram (pin 24) says 0.7 OHM.

The D1 and D2 give me 0.9 OHM.

I would not know what the correct voltage should be.

have fortunately no acid damage can discover.

Here are some pictures of the board.

I checked the u25 on VDC and gives 0.

DC8611C4-6BF6-49D9-9414-E482EC4B37B9 (resized).jpeg

Yes thats true but thats the old situation.
I switch them on the good side but still the same problems as before.

Really think its a broken part or something.
But what is the question???.

Thanks for helping so far!

Changed the wires of the battery holder Switched them and it works fine!

Thanks for helping me out wayout440 and pinballmaniac40.

Greetz