this post was submitted on 30 Apr 2026
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Yea, google and then call to see if they do pcb work.
Components and the pcb usually have polarity denoted. Failing that a pcb schematic will have the information.
I wonder, where would I typically find the schematic? This piece is so small that nothing is printed on it. It has two metal contacts that look perfectly symmetrical on each side, so there are two orientations it could go in.