About 2 months ago, i set up my Robotron with 3 Duracell batteries that tested at 1.5v each. A couple of weeks ago, the machine started booting with the high scores cleared, and requiring me to open the coin door.
So i figured i'd swap in the lithium battery kit i had on hand. I pulled the board and checked the combined voltage across the 3 batteries in the holder (replaced in 2008, looks very clean) - the total was .44 volts. I took out the batteries and tested each, giving .78, .79, and 1.12.
How can those three batteries give a combined voltage lower than the average?
Is there something odd on the board that i need to look into?
I saw other threads about older defender boards and battery drain, so I'll ask if anyone knows if these board markings are defender, or robotron: 5770-09656-00 Rev B.
Should i choose to install a battery pack instead of the lithium?
thanks for any suggestions,
John
So i figured i'd swap in the lithium battery kit i had on hand. I pulled the board and checked the combined voltage across the 3 batteries in the holder (replaced in 2008, looks very clean) - the total was .44 volts. I took out the batteries and tested each, giving .78, .79, and 1.12.
How can those three batteries give a combined voltage lower than the average?
Is there something odd on the board that i need to look into?
I saw other threads about older defender boards and battery drain, so I'll ask if anyone knows if these board markings are defender, or robotron: 5770-09656-00 Rev B.
Should i choose to install a battery pack instead of the lithium?
thanks for any suggestions,
John
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