Dangerous sounding electrical buzz/crackling from laptop internal left speaker ONLY (doesn't happen through headphones or external audio interface and

[Matt_annoyed_by_MS]

I am experiencing an annoying and worrying sound from the left speaker of my Acer laptop. The sound occurs regardless of what volume the laptop is set to (including muted/0%) and only occurs when my eGPU is connected. The noise modulates subtly along with any sound being played through that left speaker but never goes away or gets fainter.It is a loud buzzing/crackling which sounds a lot like electrical arcing.I posted the sound on Reddit to see if anyone there could suggest any possible solutions I agreed it sounds similar to a bad earth but I cannot understand why this would only affect a si

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