Reverse polarity if the LED doesnt light but the motor starts to spin the fan then you would know that this is the cause. Any reason why the 3rd fan wouldn't be spinning? Joined: 7 May 2009 Posts: 253 Likes Received: 12. Euphoria Or it could even be a software issue. Trust. First get a PSU and jumper-wire the GND, +12V from the PSU (Molex) to the corresponding pins in the proprietary apple connector to see if each fan spinning. The fan's LED is connected in parallel* to the fan motor, so it could light up even if the motor is broken and/or won't spin. Joined: 7 Feb 2017 Posts: 1,015. I am currently trying to get my new pc up and running, but I cant get the front fans in my 400A to spin. Nothing changed, the CPU fan still didn't move. I decided to power up all case fans with SATA and use 2 splitters which are now connected to 2 different PWM headers and everything works fine. How many wires are connected to the 3pin. Cable Matters 2-Pack 8 Pin PCIe to Molex (2X) Power Cable 4 Inches. EDIT: it's a little late in Norway so, I'll check repplies (if any) in the morning. They don't need separate connectors from your power supply because the wires all go to the same place inside your power supply anyways. Daedelus New Member. Case fans not spinning on new build! It is a pass-through 4-pin, so you can daisy-chain them. It's easy! thanks. ItzArvinTobi - Check to make sure the fan is plugged in somewhere first You should be able to trace the wire to either the PSU (via a Molex connector most likely) or to the motherboard. My screen displays nothing as well so I guess not even the PCI slot for the GPU was saved. In short yes you can cut the molex plug off and replace it with a board connector. unplugged the molex cable from the fan control- the RGB went out, so the controller must be getting power and sending to the fans, but it is not spinning them. Jun 9, 2007 10,706 161 106. Make sure all the connections are solid, the lights should be on by default, if they are not it could be a power issue, try another molex connector off the PSU. My first suspicion if it isn't overheating from dust build up is potentially a bad psu. gh0st47 noobsaibot999 You also need to connect the USB 2.0 USB Header to the MB for connection since it runs off the software. LL120 Fans Not spinning (LED works) Literally just got these in the mail an hour ago and after tutorials and the hassle, I managed to plug everything in that needed to be plugged in and of course the LEDs work on all 3 fans but the fans are not spinning. hope this helps. I disconnected the 2x3pins Sys fan thinking there wasn't enough power (my wall sockets are pretty full in that area) and now, with only the CPU fan connected either nothing keeps happening when I turn it on or, the fan twitches and then a beep goes off, PC reboots only for the same thing to happen, fan twitches, beep, reboot. If it starts and fans work and hard drive and gpu (if the psu is powerful enough), EVGA SR-2 / 2x Intel Xeon X5675 4.4Ghz OC / 32GB EEC 1800Mhz OC/ AMD Radeon HD 7990 / Enermax Evoliution 1050W / Main RAID 0: 2x256GB 840EVO SSD / BackUp(1) Raid 5: 3x1TB WD HDD / BackUp(2) 1x2TB / Dell U2412M / Nec EA232WMi. One of my favorite solutions to this problem is a Phanteks product, the PH-PWHUB_01, which will use one PWM signal from your motherboard and a separate SATA power connection to drive up to 11 3-pin fans. A non-working fan could be something as simple as collected dust catching a fan blade, to a lose connection, to malfunctioning control circuitry. Maybe as little as connectors. But it could be any faulty component. Have tried 2 differnt heat sink fans as well as all the fan connectors on the board. 4G Routers - I've never used one before but I need one Urgently for my new job, so I need some help with questions and advice, Installed new SSD and got "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key" error, Help! So my dumbass plugged the molex and the 3 pin connector at the same time. Started 15 minutes ago The directions are not clear, they only indicate that you can plug the bridge cable into the second controller. 4.5 out of 5 stars 28. My guess it is your psu. It would seem your CPU is hitting its t-max then initiating a shutdown. The fan can get clogged with dust and lint hence preventing it from spinning. An 8-pin connector. By Igor Wallossek 16 November 2011 After discussing the theory of PC cooling, in Part One, we now move on to technology and implementation, discussing case fans… This problem happened to me with a normal case fan which was attached to a PWM splitter (6 fans). I got some case fans yesterday and installed them today, during the install i decided to clean my computer using compressed air can, used it before and no problems. More posts from the pcmasterrace community. Cooling Fans not spinning. After that, I opened the thing up to reseat the GPU, RAM (why not), and while still thinking there wasn't enough air going in to keep it cool, I also added an extra 3 pin fan that I had from a previous build. Despa.cosmin21 Anyways, it seems the fan controller in my H440 is defective, has anyone see this before? Get it by Tuesday, Jan 5. Im not sure if you are asking about the lights spinning or the fan blades, if its the lights that are not spinning then mby just keep playing with the settings on the remote. So my question is how do i fix my fans so they can be connected only by the 3 pin without the molex thanks! Started 4 minutes ago I did not think that just one molex connector could power so many. Press the button if you wish to have the fan spin at all times, even at lower loads. I plugged it through the mini 4pin > molex adapter and they started working like a dream. Nevermind, next to each of the 4 pin power plugs there was a little fan controller switch. Posted in New Builds and Planning, By So I’ve recently bought new case fans. Spinning at 4000RPM, just 18.7dBA of noise is emitted so it’s quiet. But when I unplug 3-pin connector from CPU_FAN header everything works (pump, fans, profile changer) but I can not see RPM on CPU_FAN. I have connected the power molex to sata oower. Major props to Cooler Master for this particular design. That is a cable adapter that connects two of your 3-pin fans to one 4-pin Molex™. 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. They are connect together through to a Molex into the psu. - try spinning it by hand to check that it turns freely. I think I'll go ahead and see what temps I get with my run-of-the-mill fans and go from there. If the fan blades are not spinning, make sure you have the fans plugged into headers on the mobo. Linus Media Group is not associated with these services. If yes, check if the power goes through the header pins. But have noticed one of the case fans not spinning. I believe that shorted circuits might be the problem here since, from what I can see, nothing that is connected to the mobo works as it should if, at all while everything else is ok. You need to be a member in order to leave a comment. Started 22 minutes ago Specifications. Try setting up a best case scenario, have just 1 controller, make sure the power is connected to the PSU molex directly - no extensions or adapters. Thank you. Is my new (1 week old) mobo fried? Just was a little worried as these fans are the most powerful I have ever worked with and was a little worried something might have blown over time due to the strain on the single molex connector. And they have molex and 3 pin motherboard connector. It should be connected to one of the PSU rails via a MOLEX connector. Video card temperatures typically range from 40C to 80C. I've fiddled in BIOS and wiggled the cables and changed ports to no avail. I disconnected the 2x3pins Sys fan thinking there wasn't enough power (my wall sockets are pretty full in that area) and now, with only the CPU fan connected either nothing keeps happening when I turn it on or, the fan twitches and then a. Thread starter ... How many other fans are in your system, were they all spinning, and do you have a mid or full size case? Thanks in advance for any help provided. I plugged the 3-pin and the molex connectors I plugged the fans on the side of the pump--> no glow, no spinning (and the beginning the pump didn't even pump !) I have a … So my dumbass plugged the molex and the 3 pin connector at the same time. Now, confirm that the pump (the thing sitting on top of the CPU) is connected to the CPU FAN pin on the MOBO. Moves 18.75 cubic feet per minute (CFM) of air, producing fantastic airflow around your system, despite the small size. Even with the best quality fans, I personally would not tolerate the fan noise 10 spinning fans will produce. Guys, In my new rig, I have 17 fans (:D) and 2 fan controllers to control 8 of them. 4.4 out of 5 stars 393. One thing to consider tho is that if you want to control the speed of the fan it must have a 3rd wire ( usually yellow ) that will allow your motherboard to receive the fans RPM. I know they are all females but I need a male connector to get the 9700 and Antec PSU fans working together. My PSU has one set of molex connectors coming out of it (the rest are modular and not really accessible because of the position of my radiator). hope this helps. HWMonitor reports a fan spinning too: Motherboard reports: 29C for mainboard, 46C for CPU, CPU Fan 1201 RPM. When I turn it back on, I make it to the desktop and try BF4 ultra again while keeping an eye on the temps with Open Hardware Monitor and around the same time as my GPU reaches 63c, it's fans start spinning and PC crashes again, this time for good. Some boards you can enable / disable fan headers in the BIOS.. Press J to jump to the feed. Phobya 4-Pin to 6 x 3-Pin Fan Splitter PCB (Power Six 3-Pin Fans from One 4-Pin Molex Connection!) Does the mobo think the fans are pwm 4pin vs voltage regulated 4pin. Sign up for a new account in our community. I haven't figured out yet why that is the case as there's no other fan connected to the motherboard's 3-pin/4-pin connectors. Cookies help us deliver our Services. Re: Cooler Master case fans not spinning « Reply #1 on: September 28, 2018, 12:33:28 PM » If these fans have 3 or 4 wires on them then they are variable speed and it might be a calibration required in the BIOS to set the PWM values. Any reason it may be doing this? It most likely easy and cheap to repair, but it takes a lot of knowledge, which most likely you won't have not to mention a donor board. Posted in Troubleshooting, By Return it if you still have warranty. All fans seem to be spinning perfectly fine. Welcome to the official subreddit of the PC Master Race. Drako Lifer. I just installed it this afternoon on my GTX 580 and idle temps dropped about 7 degrees, load temps dropped around 25 degrees. [UPDATE]I figured out about the fans but now idk how do i fix the restarting problem could it be from the psu or the motherboard? I thought it was fine i booted into windows it worked ten minutes and just restarted without any errors and stuff. Im sure its not the temps because i dont have that problem without the fans and the cpu temps barely go over 45 while gaming gpu temp stay at 60-65 so it may be a gpu problem even though its 600 w its not 80 plus so i guess it is the gpu, But idk why it would be the psu like it works flawlessly when the 3 pin fan isnt connected to the mb only to the psu. Extra Riing Plus fan into the 4-pin molex & # 8482 ; graphics card run hot or... Beeps are post codes find by your motherboard what your beeping code means was to... Your mobo in minimum config BIOS however, i got it but now idk why do my restarts... Light but the lights will be off the AX860i 's temperature and the 3 pin motherboard connector fans one... 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