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MPU4 problems after battery replacement

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Hello, 

 

The VFD stopped working on my MPU4 machine (Rocky Horror) I took out the board and found the old battery leak problem. 

 

The tracks directly under the battery were shot as were a few around the battery. Mostly the VFD lines. 

I have patched over and tested continuity. Clean and put new battery in. 

 

Now when I switch on, the machine initializes normally. Reels set, all the lights work, VFD all looks ready to go....

 

Except; 

- Does not recognise coins. 

- None of the door switches / test switch do anything. 

 

I can't see it being a track repair I've missed as the switches and coins were working before, it was just the VFD alphanumeric that was not on. 

 

Does the unit need programming somehow to recognize these parts again..?

 

 

Any help appreciated. 

 

Ant. 

 

 


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