P20 slight hum

Power Components
1

I was close to my P20 unit today and noticed a faint hum noise coming from it. It doesn’t present in any of the other equipment. I unplugged all other equipment and restarted. It is still there, and I can hear from about 1m away when there is no other noise. If I power the unit off, then turn the physical switch on the rear of the p20 on, it momentarily makes a louder hum, then fades to a slight hum.

Does anyone have any advice? I’ve had it for about 4 years since new.

Thanks in advance,

Andrew

2

I have a clear hum from my P15 also.

3

It’s worth noting that a P20 producing a faint hum with no other equipment connected is generally not alarming. Environmental factors like grounding, nearby electronics, or mains frequency can contribute. Monitoring for any increase in hum over time is a good precaution.