Acer Predator Helios 300 PH317-51 - Fan not spinning

Andy247
Andy247 Member Posts: 12

Tinkerer

edited November 2023 in 2020 Archives
Hello everyone!

Since my fan lately made some noise around 2000 rpm I decided to open up the laptop, clean the fans with air pressure and reassemble it with new thermal paste. 
Everything went fine, except for one of the two fans (CPU) does not spin anymore, just forwards and backwards a little bit like you can see in the following videos: 
#1: https://youtu.be/RHGOoqcYQnY
#2: https://youtu.be/_BFprG2te-Q

Once I opened the laptop again, I could feel that this fan has a little more resistance than the other one and I could hear a very soft grinding noise. I tried out different lubricants and greases but nothing makes a difference. The resistance is not that much, it can still spin freely, but not as long as the other one. 

This is the fan model:


Should I have used a brush instead of air pressure?
Does anyone have experience with this issue and has an Idea how to fix this? 
Shold I just buy a new one and if yes, can you recommend a retailer for this fan?

Thanks everyone for your help!