Electronic – How to test for ground loop using multimeter

groundmultimeter

I am experiencing a hum in my audio line from my computer. I suspect it's from a ground loop. My monitor (which house the speakers) is a 2 prong plug is plugged into a separate outlet from the power strip of which the PC is plugged into. I thought this prevents a ground loop but I would still like to test.

I just got a multimeter, and I have no idea how to use it. All the examples I see on ground loop testing are not for PC/Monitor jacks.

Can anyone give me a step by step. I have this multimeter: Amazon Link

Best Answer

It's not a ground loop. It's something else. A loose connection, a broken connector or cable, or just crappy equipment. Also, plug everything into the SAME power strip. If that doesn't cure the problem then it absolutely isn't a ground loop.

"Ground Loops" almost never happen in the real world, and they absolutely don't happen with normal equipment plugged into the same wall outlet (via a power strip).