Bose Speaker noise sounds like Thunder

Hi

If the audio is distorted or could be a SOC on the main board but we should leave that as a last resort

I would open it up and check for any bulging or popped capacitors ,also if anything looks strange I would check it with a multi metre to check if there is a short of some sort

Also try reseating any connectors (possibly cleaning them with isopropyl alcohol as you go)just in case it’s a dodgy connection

And check if the issue persists

If the issue persists let me know and we can look into in further:-)

Hopefully this helps

Any questions please ask

Thanks:-)