Can you change psu fan

I moved the PCB only enough to remove and replace the fan. Another advantage of this is, you are unlikely to touch the high voltage area of the PCB. Prepare the new fan wire for connection. First cut the cable to slightly longer than the original.

If there are three wires, you only need the red and black ones. The yellow is a sensor wire, not used here. Solder the wires to the same place as the old fan. Make sure of the polarity.

Then screw the fan to the case, once again making sure of the correct orientation reversing this will mean the air will be blown in the wrong direction. Once you have fitted the new fan, it is a good idea to test that the power supply actually works, and the fan rotates properly.

I skipped this step myself, so you'll need to check the following site, which describes how to operate the power supply without connecting it to the motherboard.

If the power supply works OK, you can put it back into the case and reconnect it to the motherboard. Make sure all the connectors are in the right places. Reconnect all cables to the back. Once connected, power up the PC. I had a hair-raising moment when the PC refused to boot at first, turned out I had dislodged one side of the CPU heat sink, and it was floating without making contact. Make sure that you don't mess up other connections when replacing the power supply, double check everything before switching on.

Enjoy your new fan! For example: a 80mm fan is 80mm across. The distance between screw holes is Also make sure the width W in image below of the replacement fan will fit in the power supply. The easiest way to do this is to buy a replacement that has the same width as the old fan.

Reply 10 years ago on Step 7. Thanks for the correction I could have sworn I actually measured it as 80mm between screw holes. Are you sure it is the same for all fans? Google is being unhelpful today, I still couldn't find a site that actually gives the exact specifications. Still, I think you are right, I'll update the instructable as soon as I find a decent reference to link to.

I'm sure the dimension ie 80mm is across the fan body. All the fan manufacturers I know of use these dimensions.

The illustration above was taken from Mouser , a large distributor of electronic parts. Digikey is the same. I too was surprised I couldn't quickly find a good source on the web about these fans.

If I would have found one I would have included a link. The best I could do was the illustration. I find that if the fan is really annoyingly noisy, pulling off the label and removing the rubber plug, exposing the bearing sleeve or ball , then applying a few drops of 3-in-1 oil and letting it settle in virtually silences them, so you get more use out of them and more time to go buy a new fan It's like someone stabbing a hot screwdriver into your skin and muscles, it's not something that you'd want to happen, well, not unless you're a weirdo If your computer is old enough that the fan in the power supply is making noise, it is probably older than the warranty is long.

Good Instructable, though. I read one edition of Scott Mueller's Upgrading and Repairing PCs and he warned people against ever opening a power supply because of the potentially dangerous voltages, even when disconnected. Still, it would be possible. Reply 12 years ago on Introduction. Yes, you are right, the warranty has long since expired. I did post warnings about the dangerous voltages inside, but if you are careful, a simple replacement like this shouldn't be too dangerous. To discharge them,short green wire to any black while unplugged.

That turns it on only to discharge the caps. Its hard to focus when you have a noisy computer running next to you. How likely would I be to get a shock from a brand new power supply that I'm sure has set in a distribution center for quite awhile?

I have been trying to find a power supply with an orange led fan for a few years now I have contacted several manufacturers asking them if I purchase the fan could they replace it but I have not heard back from them, so I guess I am left with the only option of attempting this myself to finish off my son's "dream machine.

Couldn't you have also just found a dead mobo, removed the two-pin fan header from that and solder on those header pins to make the fan more easily replaceable? The fan attaches with a 2 pin connector, so that wasn't an issue.

However I wasn't aware that it retained lethal power stored in the capacitors. Well heck. I don't feel as comfortable just "swapping a fan out" anymore. Thank you guys. I think I just have to bite the bullet and buy a new PSU. So, what brands of power supply are recommended?

I've been using Coolmaster and Corsair power supplies. Both appear to be good quality at a reasonable price. To continue this discussion, please ask a new question. Lenovo 53, Followers - Follow Mentions Products.

Kyle for Lenovo. Spiceworks Help Desk. The help desk software for IT. Track users' IT needs, easily, and with only the features you need.

Learn More ». Get answers from your peers along with millions of IT pros who visit Spiceworks. What are some good brands to look for? Any recommendations? Best Answer. Thai Pepper. RobT64 This person is a verified professional. Verify your account to enable IT peers to see that you are a professional. View this "Best Answer" in the replies below ». Paolo Sep 12, at UTC. Ok with the sticker way.

Only if it were to be very noisy, you can use the lithium grease, such as that for the chains. Berrick Sep 12, at UTC. Another point is that more blades can equal more noise.

Lmaverick14 Sep 12, at UTC. Judds Sep 12, at UTC. Normally in the work environment I agree with replacing the PSU. Pure Capsaicin. Robert Sep 12, at UTC. Lubricating a fan with oil will make it fail sooner. Silicon lubricant is slightly better. Molybdenum powder is good, but pricier. Precision Fixed Workstations. Turn on suggestions.

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Search instead for. Did you mean:. Last reply by Savage Cabbage Unsolved. Replace fans in power supply. Hello community! All forum topics Previous Topic Next Topic.

Replies 5. It has 5 pins but only 4 wires are used. Dell does not publish this. And some dells use standard wiring. I believe this is correct. In response to speedstep. In response to e-lite. Most systems do fan test when turned on.

This is also why Intel changes sockets and chipsets all the time. Savage Cabbage 2 Bronze.