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While using DMM to troubleshoot an amplifier that is suspected not to be receiving an audio signal on the inputs, and the technician will check the RCA input signal cables at the amp for audio signal being present (unplugged from the inputs) while still plugged at the output at the head unit. What setting should the DMM be on?

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1. While using DMM to troubleshoot an amplifier that is suspected not to be receiving an audio signal on the inputs, and the technician will check the RCA input signal cables at the amp for audio signal being present (unplugged from the inputs) while still plugged at the output at the head unit. What setting should the DMM be on?





 
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