Irritating noise

[hmuller]

My PBP makes a regular, intermittent, quiet but audible, whining/buzzing sound. It goes about 4 seconds on, 4 seconds off. I started noticing it today, but I'm not sure if it started today. It's irritating enough that I've been playing music to cover it up, but that's not an ideal long-term solution.

Any thoughts?

Does the noise occur when not plugged in, on battery?

It could be the problem highlighted here:

https://www.pine64.org/2019/10/05/octobe...ping-news/

and discussed here:

https://forum.pine64.org/showthread.php?tid=8355