Buzz noise on Acer Predator G9 (593)

After 9-12 month of use, this model starts producing weird buzz sound in some circumstances. When the system heats up, components on the motherboard start making some kind of electronic interference that affects speakers, so they start making this buzzing noise. CPU or GPU heat is not the main problem, the same noise appears while you are sitting in BIOS or when you copy a lot of files between drives. So, it’s more likely southbridge or something near it, that’s my guess. You can solve it by disconnecting the internal speakers ( output works clean and perfect) or settings coolers on maximum (cause it will cool down laptop internals). The saddest part of this story is that Acer closed thread on the official forum where lots of complaints were posted regarding this issue. In the official service center, Acer just replaces the motherboard for laptops that are under warranty, but this noise comes back in the same period, 9-12 months of use. So this is a hardware flaw, which they’ve decided simply to skip.