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Old 05-25-2015, 10:28 AM   #7 (permalink)
kenchan
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a good way to check for ground is use your multi-meter in volt mode, place one of the probes on a known ground, then the other other probe on the candidate metal. if the volt drops to zero and stays there, that is a clean ground.

if the volt fluctuates near zero, it's got noise. or if it doesnt go anywhere near zero, that is ungrounded.
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