The noise of the fan in the computer case is getting louder because of the wear of the bearing hole on the video card fan due to the lack of oil in the bearing. The clearance between the shaft of the fan and the bearing is too large. Moreover, the axial movement clearance of the fan is too large.The fan is in axial motion after rotation, and the rotating plane of the fan blade is also shaking, which not only aggravates wear, but also produces a lot of noise.The vast majority of fan failures are due to this.Although a new fan is the most convenient, but not in line with the DIY spirit, and second, it is not necessarily immediately can find a replacement model.
Of course, fans with such faults are not beyond repair, and I will now introduce a repair method.The ingredients are simple, just a small piece of aluminum can and a little butter (the butter should be clean and free of impurities).
1. First, clean the dust on the fan to avoid any more dust entering the bearing during the installation;
2. Tear off the adhesive of bearing seal and remove the pin on the shaft;
3. Wipe the residual oil in the bearing with clean tissue paper or soft cloth, and then wipe the shaft rod;
4, add a little butter in the bearing, the principle is less than more so as not to seriously affect the speed;
5. Then cut the aluminum skin of the can as big as the outer diameter of the bearing pin, cut a round piece, and dig a small hole in the middle that can just pass through the shaft rod, and pad it between the bearing and the pin to reduce the axial movement and parallel movement distance of the bearing.If the clearance is large, it is necessary to pad several thickening to make the front and rear moving distance of the bearing below 0.5mm;
6, seal the oil well, add a little butter, finally put the fan back to the graphics card.
Try plugging it in, and you'll find it's much quieter, and it'll last for at least two years.But the need to remind, although the voice is smaller, but because the manual precision is limited, the speed will drop a little bit.