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FAQ Buttons Won't Work
Amazon.com: Circuit Scribe Non-Toxic Conductive Ink Pen for Kids Circuit Building Set | Silver Ink Rollerball Point Pen for Circuit Scribe Kit, Science Experiment, DIY Science Projects | Single Pack : Toys & Games -
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FAQ Buttons Won't Work
I found on Amazon, Pens with conductive ink. When front face plate is disassembled. use an alcohol pad and clean the PCB surfaces where the buttons make contact. Carefully clean all the button surfaces. Inside each button, draw a fine line of conductive ink on the raised area inside. Let ink dry...