11-26-2019, 02:45 PM
(11-17-2019, 06:42 PM)linusfargo Wrote: Crosspost:
https//forum.pine64.org/showthread.php?tid=8242
The noise on my PBP is definitely not audio circuit related as inferred in that thread. I went so far as to unplug the speaker connectors and the whine is still there.
Only happens when the CPU is loaded, just like good old fashioned power supply coil whine. Seems to be worse when the laptop is running off of the power adapter. On battery, it's almost silent. Probably something in the battery charging circuit. Could probably pinpoint whichever inductor is the culprit and treat it to some epoxy to fix it. ¯\_(ツ)_/¯
Mine is from the first forum preorder batch, if that's useful to anyone.
