how to fix a noisy fan.
step 1, unplug and let it cool down.
step 2, carefully remove the fan by unscrewing the 2 screws and unplugging the power
step 3, using tweezers or something, carefully remove the silver sticker on the back
step 4, place ONE drop of light machine oil in the center hole.. i used the oil that came with my electric beard trimmer
step 5, let the oil sink in
step 6, put it all back together. you don't need to tighten the screws really tight.
plug it in and enjoy your silent moonlander.