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Panamax M5400-PM


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Panamax Tech Support

It is perfectly normal on this unit to have some humming noise, this is due to its internal voltage regulation transformer. Any model with voltage regulation or an isolation transformer will generate this noise.There is nothing to worry about your unit is working fine Thanks,
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I use a 5400. I remember reading about the hum before I ever got it. You're talking about a very faint hum coming from the unit itself right? Mine has that, but it's inaudible unless my head is right next to it. I had some issues with it over correcting the voltage too. The voltage shown isn't that accurate either.

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