01-12-2020, 04:50 AM
(01-10-2020, 12:42 PM)zaius Wrote:(12-11-2019, 07:19 AM)FrancisTheodoreCat Wrote: For anyone interested, I did some testing. Both were with the PBP on and mostly discharged, logged in to the desktop, and with the CPU moderately loaded via a muted YouTube video playing in Firefox.
Charging via barrel jack = audible high pitched coil whine.
Charging via USB-C = completely inaudible coil whine.
Not sure why the difference. Something to do with USB-C PD? ¯\_(ツ)_/¯
Do you get it running off battery power with no charger?
I've found that I get the high pitch whine when a USB-A peripheral (such as a mouse) is plugged in.