Track and Field High Score Save Battery Revisited

mrbill08

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Donor 5 years: 2014-2015, 2019, 2022-2023
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I was repairing a Track and Field and the on-board 3V lithium battery was dead. I unsoldered the old one and used a pc-mount CR2032 coin cell battery holder instead. If you slightly drill out the battery's positive through hole pcb trace and insert the positive leg of the holder, holding the pcb over a light you can see the traces on the underside of the board. Rotate the battery holder so the negative pin of the battery holder is in a place that when a hole is drilled it will not touch any traces and mark that spot and drill a hole. Run a short piece of wire to the negative PCB trace from the negative pin of the battery holder and solder both pins in place. Now you have a board mounted removable battery solution.

Bill
 

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