© 2021 TechSpot, Inc. All Rights Reserved. But I did get some small movement in the fans only after I had turned the PSU off and pushed the power button the first time to try to turn on the PC. Not true. Hey guys, so my Ender 3's PSU fan suddenly stopped working. I bought 2 spares. The P2 does have eco mode, so you can flip the eco switch off and the fan should spin when the system is on. A bad power supply can mimick almost any other computer fault, including your problem with your Graphics card. First diagnose the bad or failing power supply. That will tell you if the psu is dead or not (its fan(s) should spin up). Took out my multi meter and tested the slot for the fan and weirdly enough, it … It sounds to me like the fan controller they use might be faulty. Unplug the mobo connector and short the green to any black. Plug the PSU power cable into a wall socket or surge protector, and turn on the computer. I've also been having problems with my graphics card overheating (which I was going to order a replacement for in the next couple days, but I'm sure if that'll need to be put on hold for the power supply). Reply to this topic; Start new topic; Recommended Posts. View our Welcome Guide to learn how to use this site. I may just end up ordering a replacement and then going through the RMA process for the one I have currently. No. Unplug the mobo connector and short the green to any black. If you know where they are, short-out the two pins with the jumper OTHERWISE just leave the computer unplugged for at least 10 minutes or longer. #5 Replaced PSU and tested it with PSU tester and all appeared fine. For a better experience, please enable JavaScript in your browser before proceeding. Beginner; Members; 0 1 post; Report; Share; Posted May 9, 2017. The psu is the main suspect i recon. pc wont boot no fans no power but led on mobo comes on.. Unfortunately, new fans did not work also. I wanted you to be absolutely SURE it was the PSU fan, and not the CPU/GPU fan, which usually do respond to load, often quite dramatically. For a better experience, please enable JavaScript in your browser before proceeding. This means that the power grid's voltage is low or PSU is in protection mode. Checked PSU with PSU tester and it appeared faulty. The fan is spinning normally but has no 12 V output. Just commenting my thought! Ethics Statement Terms of Use Privacy Policy Change Ad Consent Advertise. It looks like I'm probably just going to have to RMA it as this point since it's still under warranty but I was wondering if there was any possible fix before I just return it? Booted PC, fans came on, MOBO light on, but no POST beep and no signal. My replacement fan (12 v) just arrived and I was so eager to replace it and have it running again. Also I think the hard drives are not spinning, I could be wrong here. Logitech Options not remapping Buttons on mouse. That will tell you if the psu is dead or not (its fan (s) should spin up). The G2 does not have that ecomode, so if you do have a G2 and if the fan is not spinning I would advise you call tech support and set up an RMA. Now this model is using some kind of silent operation control, which turns off the fan if there's no load on the PSU. Use a multimeter and check the voltage of the PSU > Use a multimeter to check that the current voltage is above 205 V to confirm that the PSU can start. I know that my Corsair SF600 PSU (the SFX unit) features Corsairs zero rpm mode which keeps the fan stationary until the system draws enough power for the PSU to be put under load in hopes to keep a system quiet. 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I'm just saying that you should never ever rely on the mobo led as a sign that the psu is ok. well i guess we wil see tomorow when i hook a new psu up. 0 Kudos Incorrect voltages can also cause more heat to be produced by the device. It appears the 12 volt section has died, thus no fans. I'm not sure if this is a PSU problem but it sounds similar to the case where my last PSU died. replacing psu fans is easy. In all these cases, the best solution to replace the fan with a new one. Join over 807,865 other people just like you! JavaScript is disabled. The video card gets its power from the motherboard directly and is not connected to the psu. If you're not already familiar with forums, watch our Welcome Guide to get started. Are you looking for the solution to your computer problem? There is no beep however, and no video. If they both aren't spinning, that's probably not a good thing. I'm building a new PC and I'm unable to see any bios output on the screen . I'm afraid that it may be a faulty psu or mobo. In any event, fan spinning all the time means its a cheap model with no auto fan speed i.e., speed cannot be controlled by PSU, you're always running hot, or there's a … I think the issue with the graphics card overheating is just an age problem (it's about 3.5 years old at this point) but I guess I can't rule out it being related to the power supply. Many power supplies have an external switch located at the rear of the unit. Installed PSU but have same issue, MOBO light on, fans all spin but no … JavaScript is disabled. By Ellis, May 9, 2017 in Power Supplies. Power Supplies ; psu fan is not spinning psu fan is not spinning. Suggest giving the all the cables connected to it a bit of a wiggle. I am not guaranteeing that there isn't a problem with the mobo or cpu. MOST PSU units do not increase/decrease speed with load. Yes, there are some fanless PSUs available too but they … O.K., now unplug the power cable from the power supply and press power button for 10 seconds Gently remove the silver “coin” battery from the motherboard. Join our site today to ask your question. This sounds like the power supply has failed. and then pressing the power button on the … Most power supply models have a light on back of the unit that glows when it’s powered on. Anything I could test or attempt to fix before that? ye i just found the thread im gonna try testing the psu.. watch this space. I opened the case and see the fans of the psu, cpu, case fans spinning but the fan of the video card is not spinning. Check on that, is it only 1 of them that isn't spinning? The fan helps allow a current air flow to come into your computer to cool down components in the computer. Definitely doublecheck which you have. HOWEVER, if you do decide to … Unique Dual Fans Technology: exhaust fan starts to spin when the power supply reaches certain temperatures to ensure proper airflow, the second fan spins on power up. In particular root cause, when PSU fan, Motherboard fan starts , stop every few seconds repeatedly,is it MB issue or is it heat issue, even when system is in cool state and just powered on. If not replaced, it can cause additional damage to your computer. How to fix a fast spinning PSU fan Clean out the dust If the graphics card is overheating and the fan is not. When my PSU died first my PC just shut down and did not restart. Did this answer your question? Fans DO NOT blow air OUT of the power supply. As of last week, the fan inside the PSU has stopped spinning regularly. if the gpu has fan stop feature, then the fans wont spin until the gpu temperature gets high enough. Learn how to repair a desktop computer power supply. My CPU fried and still let the Motherboard light on and Power Button did nothing. Short URL to this thread: https://techguy.org/1041378. Ellis 0 Posted May 9, 2017. DO NOT press the button if you wish to include the Fanless Mode, which means the fan in the power supply will not spin when the power supply is under light loads. It's nice that you have a supply that tries … PSU or Power Supply Unit is one of the most important components of a PC because it is the only component that provides power to all your internal computer components that include a processor, motherboard, hard drive, SSD, graphics card, case fans, etc.It can get hot during load and for this, it comes equipped with a fan for cooling. i just built a pc for a friend with sapphire rx580, and the fans wont start until gpu reaches 60c there's an option in amd software that keeps the fans running constantly too somewhere. A faulty fan is one of the most common reasons for the ‘PSU Fan not spinning’ problem. put a screwdriver on the pins that go to the power switch.. nothing happened. There the fan is spinning normally. But to be safe, go ahead and get it replaced using those prior instructions. Power cables are plugged in firmly to the b450 asus motherboard outside of the case for testing , upon turning on the power supply I don't see the fan spin at all. I cannot find any other 8910 users saying that the PSU fan never spins. The fans actually go crazy, spinning at full force. I restarted the unit and noticed that the PSU fan does spin immediately on start-up but after a couple of seconds it stops. This is why I questioned. This site is completely free -- paid for by advertisers and donations. All the led shows is that the 5 volt standby is working, nothing else. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Where the power plug goes. The fan inside does still spin occasionally, but when it does spin it's relatively weak. The 5 volts is good, ie the LED on the mOBO. The easiest test would be to jump in a known good (new does not mean known good, (Known good means a power supply that is known to be running an operating computer) to see if it corrects the problem. If possible remove the front panel/facia and make sure the connections are still hooked up to the front I/O. Press the button if you wish to have the fan spin at all times, even at lower loads. I just got a custom build Pavilion Desktop 790-0050t from hp.com and I noticed that the 400w power supply fan was not spinning. Check that it has not been accidentally been switched off. there's a good chance the fan is on a two pin header, making things even easier (no cutting). Share Followers 0. Press Esc or F10 and select “save and Exit” press Enter and allow your system to restart then check … We recommend you immediately replace the Power supply. They blow it out THROUGH THE BACK. It sucks it in through the fan grille, and blows it out the back. good news (i think).. tested the psu as per instructions and dito nothing.. so looks like its the psu.. i believe its the CPU, if you get power leds on the motherboard then it tells us that the PSU is fine. Be sure that the onsite technician turns the 8910 on and checks the replacement PSU fan. However, while testing my system (e3-1230v3 xeon and GTX 1060 6GB) outside of … Same result with or without RAM. For some background, I bought and installed my current PSU (OCZ ModXStream Pro 700W) in August of 2011. You always want your power supply facing down, in a bottom-mounted case. Why is the fan not spinning in the computer power supply? Don't get me wrong. TECHSPOT : Tech Enthusiasts, Power Users, Gamers, TechSpot is a registered trademark. Ellis. When you say you tried shorting it, what exactly did you do and what exactly happened? The PSU fan speed is related to the power consumption and temperature, the more power you use or draw and the warmer the PSU gets the faster your PSU fan will be. Thanks for your reply - … They say that unplugging a PSU from the wall socket (while still attached to the motherboard, etc.) The lights would come on, the fans would spin (case fan, cpu fan, power supply fan, video card fan). Updated: 12/30/2019 by Computer Hope. The fan can become faulty either because it is jammed due to dust, or due to hardware failure that includes worn out bearings or because of some component failure in the fan. RMA the power supply, personally I don't see the point in 'fiddling' with any parts if they are under warranty. I'm dumbfounded. 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