Does anyone know how to replace the fan in a WRT1900AC v1?
I've been constructing my own fan control script, and I notice that my fan is really noisy at anything less than a PWM value of 200. In fact, if I give it a value below 200 when the fan is stopped, it won't even start. If I spin the fan down from 200 to 150, there is a loud grinding sound. My fan isn't much quieter as 200 than it is at 255, just a lower pitch, but I see that people are having success with values like 150 and report that it is quiet (I assume the fan is actually spinning up at that value).
To address this, I bought two 40mm x 10mm fans: a Sunon quiet ballbearing fan that uses the same 0.8W power as the stock fan (might even be the same model), and a Sunon high-rpm fan that operates at 0.96W. When I opened up my router, though, it appears that the fan has been attached with screws from the underside of the heat sink. I tried removing all the screws on the heat sink, but I couldn't remove it, it wouldn't budge. Has anyone removed their heatsink? Is it just stuck because of thermal grease/glue? Do I need to remove the smaller, shiny heatsink first before removing the larger one?
Does anyone know how I can remove the existing fan? There doesn't seem to be a good place to mount a fan other than where the old one is, but trying to pry it off didn't work. Should I just attack the old fan with a Dremel tool?
The bolts of the fan are on the other side. To remove them you have to remove the heat sinks. They are glued to the components below with heat conducting tape. You have to be very careful and start with the heat sink on the wifi card. I used a flat screwdriver and gently removed it. Then you have to remove the second heat sink the same way starting from the other side (the side that is opposite to the WiFi card). I replaced the fan with 50x50x10mm. I made some cuts in the sink to remove some of the ribs. I used a bigger fan, because it is a lot quieter and has a lot more CFM.
(Last edited by i.trankolov on 13 Oct 2015, 09:42)