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GL702VM Fan Crackling noise after gaming session

Level 7
Hi guys,

My right fan (fan below the Num Pad) started to make a crackling sound but only after a gaming session with full speed. After that when it becomes calmer the sound appears and is like if it is hitting something.
I already visually investigated by opening the bottom cover but didn´t find anything suspect and it seems spinning normally.

When it´s producing the sound, if I lift its side a little bit 40-60º angle it stops, but when I put back flat it automatically starts to do it.

Any ideas on what is causing this issue?

Level 8
I had this exact same issue 30days after buying my laptop. Its a bad fan and it will get worse. I ended up just buying one on ebay and replacing it, its an easy fix.