How do you use a multitester to troubleshoot a computer speaker that plugs into a subwoofer with an RCA plug?
jks
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Posted on
The upper part of the RCA plug will be one polarity (usually minus) and the tip will be the other polarity. Put the multimeter on "ohms" setting and measure from the tip of the plug to the upper part. You should measure continuity and hear a "click" from the speaker.