I'm afraid that it may be a faulty psu or mobo. Not true. 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. The 5 volts is good, ie the LED on the mOBO. Same result with or without RAM. 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. But to be safe, go ahead and get it replaced using those prior instructions. © 2021 TechSpot, Inc. All Rights Reserved. Beginner; Members; 0 1 post; Report; Share; Posted May 9, 2017. RMA the power supply, personally I don't see the point in 'fiddling' with any parts if they are under warranty. put a screwdriver on the pins that go to the power switch.. nothing happened. They blow it out THROUGH THE BACK. Be sure that the onsite technician turns the 8910 on and checks the replacement PSU fan. When my PSU died first my PC just shut down and did not restart. Yes, there are some fanless PSUs available too but they … Anything I could test or attempt to fix before that? First diagnose the bad or failing power supply. AMD Smart Access Memory Tested, Benchmarked, Nintendo buys Next Level Games, makers of Luigi's Mansion 3, Analyst believes a Nintendo Switch Pro will arrive this year, Google employees form a union to fight for change Alphabet's ways, Dell's new Latitude laptops feature an automatic shutter for the webcam, Intel discontinues 300-series chipset motherboards, Amazon buys 11 Boeing 767-300 jets to expand air transportation network, None of Google's apps have been updated since before Apple's privacy rules took effect. The lights would come on, the fans would spin (case fan, cpu fan, power supply fan, video card fan). and then pressing the power button on the … 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. The fan helps allow a current air flow to come into your computer to cool down components in the computer. there's a good chance the fan is on a two pin header, making things even easier (no cutting). 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. 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. Press the button if you wish to have the fan spin at all times, even at lower loads. Now this model is using some kind of silent operation control, which turns off the fan if there's no load on the PSU. Updated: 12/30/2019 by Computer Hope. This site is completely free -- paid for by advertisers and donations. Learn how to repair a desktop computer power supply. Join over 807,865 other people just like you! 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? Thanks for your reply - … There is no beep however, and no video. Join our site today to ask your question. In all these cases, the best solution to replace the fan with a new one. Plug the PSU power cable into a wall socket or surge protector, and turn on the computer. Power Supplies ; psu fan is not spinning psu fan is not spinning. Many power supplies have an external switch located at the rear of the unit. We recommend you immediately replace the Power supply. 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. I bought 2 spares. pc wont boot no fans no power but led on mobo comes on.. I cannot find any other 8910 users saying that the PSU fan never spins. TECHSPOT : Tech Enthusiasts, Power Users, Gamers, TechSpot is a registered trademark. A faulty fan is one of the most common reasons for the ‘PSU Fan not spinning’ problem. However I noticed that the second PSU's fan isn't working and it has become quite hot compared to the other one. All the led shows is that the 5 volt standby is working, nothing else. The fan is spinning normally but has no 12 V output. Ellis 0 Posted May 9, 2017. I restarted the unit and noticed that the PSU fan does spin immediately on start-up but after a couple of seconds it stops. I may just end up ordering a replacement and then going through the RMA process for the one I have currently. There the fan is spinning normally. 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. HOWEVER, if you do decide to … This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. A bad power supply can mimick almost any other computer fault, including your problem with your Graphics card. Suggest giving the all the cables connected to it a bit of a wiggle. Most power supply models have a light on back of the unit that glows when it’s powered on. It sounds to me like the fan controller they use might be faulty. They say that unplugging a PSU from the wall socket (while still attached to the motherboard, etc.) 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. Ellis. 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. Where the power plug goes. For a better experience, please enable JavaScript in your browser before proceeding. For some background, I bought and installed my current PSU (OCZ ModXStream Pro 700W) in August of 2011. 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. Fans DO NOT blow air OUT of the power supply. 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. Unplug the mobo connector and short the green to any black. Reply to this topic; Start new topic; Recommended Posts. As of last week, the fan inside the PSU has stopped spinning regularly. 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. Booted PC, fans came on, MOBO light on, but no POST beep and no signal. 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. If not replaced, it can cause additional damage to your computer. 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. Press Esc or F10 and select “save and Exit” press Enter and allow your system to restart then check … Installed PSU but have same issue, MOBO light on, fans all spin but no … My CPU fried and still let the Motherboard light on and Power Button did nothing. 0 Kudos Check on that, is it only 1 of them that isn't spinning? Unfortunately, new fans did not work also. If they both aren't spinning, that's probably not a good thing. if the gpu has fan stop feature, then the fans wont spin until the gpu temperature gets high enough. Just commenting my thought! replacing psu fans is easy. Hey guys, so my Ender 3's PSU fan suddenly stopped working. Ethics Statement Terms of Use Privacy Policy Change Ad Consent Advertise. 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. JavaScript is disabled. However, while testing my system (e3-1230v3 xeon and GTX 1060 6GB) outside of … 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. Are you looking for the solution to your computer problem? If you're not already familiar with forums, watch our Welcome Guide to get started. By Ellis, May 9, 2017 in Power Supplies. View our Welcome Guide to learn how to use this site. Don't get me wrong. Share Followers 0. When you say you tried shorting it, what exactly did you do and what exactly happened? How to fix a fast spinning PSU fan Clean out the dust Definitely doublecheck which you have. 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. Unplug the mobo connector and short the green to any black. Short URL to this thread: https://techguy.org/1041378. For a better experience, please enable JavaScript in your browser before proceeding. 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. It's nice that you have a supply that tries … If possible remove the front panel/facia and make sure the connections are still hooked up to the front I/O. Checked PSU with PSU tester and it appeared faulty. Incorrect voltages can also cause more heat to be produced by the device. It appears the 12 volt section has died, thus no fans. Check that it has not been accidentally been switched off. That will tell you if the psu is dead or not (its fan (s) should spin up). 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. The P2 does have eco mode, so you can flip the eco switch off and the fan should spin when the system is on. It sucks it in through the fan grille, and blows it out the back. ye i just found the thread im gonna try testing the psu.. watch this space. I'm building a new PC and I'm unable to see any bios output on the screen . Took out my multi meter and tested the slot for the fan and weirdly enough, it … The video card gets its power from the motherboard directly and is not connected to the psu. You always want your power supply facing down, in a bottom-mounted case. At the very best all it means is that the 12 V DC Line has power it tells you Absolutely Nothing about the 5 V DC or 1. something V DC lines. This is why I questioned. MOST PSU units do not increase/decrease speed with load. I am not guaranteeing that there isn't a problem with the mobo or cpu. 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 … Logitech Options not remapping Buttons on mouse. JavaScript is disabled. I'm not sure if this is a PSU problem but it sounds similar to the case where my last PSU died. Did this answer your question? The psu is the main suspect i recon. The fan inside does still spin occasionally, but when it does spin it's relatively weak. Why is the fan not spinning in the computer power supply? 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. The fans actually go crazy, spinning at full force. Also I think the hard drives are not spinning, I could be wrong here. This means that the power grid's voltage is low or PSU is in protection mode. My replacement fan (12 v) just arrived and I was so eager to replace it and have it running again. #5 I'm dumbfounded. 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). 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. That will tell you if the psu is dead or not (its fan(s) should spin up). If the graphics card is overheating and the fan is not. Replaced PSU and tested it with PSU tester and all appeared fine. This sounds like the power supply has failed. No. Inside does still spin occasionally, but no POST beep and no video a... I noticed that the PSU has stopped spinning regularly, including your problem with the mobo or.!, Gamers, techspot is a registered trademark get started but after a couple of seconds it stops the.... 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