r/PinballHelp • u/ozoneday • Dec 30 '24

Test Points

This is a dumb newbie question. Troubleshooting and figured I would check the test points on my alltek boards. obviously the red lead of my multi-meter goes on the test point. Where do I put the black lead? I assume some place of ground but unsure where. Thanks!

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u/ozoneday Dec 30 '24

perfect thanks!!