EiSkip Posted December 19, 2015 Share Posted December 19, 2015 Howdy all! For Christmas, i wanted to buy my PC an overkill upgrade, because overkill is nice. I had previously a Corsair GS700 PSU that was a bit noisy, but a utmost pain in the bum for being non-modular. After a couple hours of shopping, i decided to get the RM1000x (silent, no corsair link but who cares, overall good reviews, good 80 plus gold AND MODULAR :D: ) Hooking it up was easier than removing the GS700. But once all was plugged in and running, i noticed that my fan controller would not power the case fans anymore (3 noctua industrial 140mm PWM and 4 noctua industrial 120mm PWM. Don't tell me that it's too many fans, i know and i love overkill!) My fan controller is a lamptron FAN-ATIC http://www.lamptron.com/product/controllers/fan-atic-5-port/ I chose this one for the switchy looks and the easy settings (OFF, 5v, 12v). That way i could easily turn down the noise while idling, then play between low and high setting depending the gaming load. With the Old GS700, the case fans would start on both, depending on the switch position (off, 5v, 12) With the new RMX1000, the fans twitch on startup if the switches are on the 5v setting (the controller LEDS are on, and i can start fans with a flick of the finger, after which they'll continue to spin on their normal low speed until i put the controller switch to OFF. The only non-manual way to start the fans i found so far is to trottle them to full power (pushing the switch to 12v them setting it back to 5v) After noticing the problem, i unpluged the RMX and pluged back the GS700 to see if it was the Fan controller who died. Everything started perfectly, proving that it was a problem with the new RMX PSU and not the the Fan controller TLDR: I can't make the case fans start on low speed (5v), i absolutely need to trottle them to get them spinning. How can we fix this? Side question: Does undervolting fans could cause premature usure and cause them to die early? Link to comment Share on other sites More sharing options...
Corsair Employees jonnyguru Posted December 22, 2015 Corsair Employees Share Posted December 22, 2015 Here's what's odd: Everything else works? In other words: The whole PC otherwise works fine, posts, boots, etc. and only the fan controller is not working with the new PSU? Link to comment Share on other sites More sharing options...
Vegan Posted December 23, 2015 Share Posted December 23, 2015 If a fan in a PC PSU fn gets too loud, I would simply look to replace it with a ball bearing fan which tend to last much longer most PSUs I have serviced use PWM fans, but some cheapo crap use static 2 pin fans Link to comment Share on other sites More sharing options...
Corsair Employees jonnyguru Posted December 23, 2015 Corsair Employees Share Posted December 23, 2015 If a fan in a PC PSU fn gets too loud, I would simply look to replace it with a ball bearing fan which tend to last much longer most PSUs I have serviced use PWM fans, but some cheapo crap use static 2 pin fans This has nothing to do with the OP. OP isn't complaining about the fan in the PSU. He's talking about the fans on the fan controller not working. Link to comment Share on other sites More sharing options...
EiSkip Posted December 27, 2015 Author Share Posted December 27, 2015 Here's what's odd: Everything else works? In other words: The whole PC otherwise works fine, posts, boots, etc. and only the fan controller is not working with the new PSU? HI! Sorry for the delay, i was out of town. To make it short and sweet: Yeah, everything works and boot to perfection BUT the 6 fans plugged into the fan controller (which is only plugged into the PSU via molex, completely independant of the motherboard) It stopped working when i changed PSU (which was working fine too, i just wanted more power/modularity) Link to comment Share on other sites More sharing options...
Vegan Posted December 27, 2015 Share Posted December 27, 2015 try a different cable from the PSU to the fan controller, i have run across a few dead cables in my shop Link to comment Share on other sites More sharing options...
Corsair Employees jonnyguru Posted December 28, 2015 Corsair Employees Share Posted December 28, 2015 Agreed. If the voltages coming out of the PSU were SO OFF that it prevented a fan controller from working properly, it would be a miracle the PC worked at all. Odds are there's something wrong with the cable going from the PSU to the fan controller. Are you sure you're using the cable that came with the RM1000x? What does it say on the side of the connectors? Link to comment Share on other sites More sharing options...
EiSkip Posted December 28, 2015 Author Share Posted December 28, 2015 Here's what's odd: Everything else works? In other words: The whole PC otherwise works fine, posts, boots, etc. and only the fan controller is not working with the new PSU? Agreed. If the voltages coming out of the PSU were SO OFF that it prevented a fan controller from working properly, it would be a miracle the PC worked at all. Odds are there's something wrong with the cable going from the PSU to the fan controller. Are you sure you're using the cable that came with the RM1000x? What does it say on the side of the connectors? I am 110% positive that i'm using the molex cables that came with it. On the connector, it's written "TYPE4", on all 3 molex cables that came with the PSU. I tested all 3 molex cable with the fan controller, plugged in all the port of the PSU, just in case, with no luck... I found this video, showing that a Industrial noctua fans (like mines) seem to start at 5.2v [ame] [/ame] Could this be a lead? Link to comment Share on other sites More sharing options...
Corsair Employees jonnyguru Posted December 28, 2015 Corsair Employees Share Posted December 28, 2015 No. All they're saying is they start spinning at 5.4V. But your fan controller should be plugged into a +12V lead. The regulation from +12V down to whatever the lowest voltage that fan controller is capable of is dependant on the fan controller. Not the PSU. Link to comment Share on other sites More sharing options...
EiSkip Posted December 28, 2015 Author Share Posted December 28, 2015 No. All they're saying is they start spinning at 5.4V. But your fan controller should be plugged into a +12V lead. The regulation from +12V down to whatever the lowest voltage that fan controller is capable of is dependant on the fan controller. Not the PSU. But clearly that something changed when i hooked up the new PSU in my case. The fan controller worked fine before i changed, and when i plugged back the old PSU to test the fan controller. in short, the FN worked fine with the GS700, both before and during the after testing. And the FN isnt working properly with the RM1000x on both plugging sessions Link to comment Share on other sites More sharing options...
Corsair Employees jonnyguru Posted December 28, 2015 Corsair Employees Share Posted December 28, 2015 Yet the rest of the PC works flawlessly. It's a mystery. Do you have a DMM? Link to comment Share on other sites More sharing options...
EiSkip Posted December 28, 2015 Author Share Posted December 28, 2015 Yet the rest of the PC works flawlessly. It's a mystery. Do you have a DMM? No, but i borrowed my dad's analog multimeter two days ago, during the holiday visit for more testings. I'll check up in a day or two when i have more time to gut my pc open again. Link to comment Share on other sites More sharing options...
Corsair Employees jonnyguru Posted December 29, 2015 Corsair Employees Share Posted December 29, 2015 Let us know what you find. After you probe the +12V, I seriously doubt it's +/-1%, never mind the +/-5% allowed by Intel's ATX spec. On my end, I'm going to buy on of those fan controllers to see if I can duplicate the issue. Is this the controller? http://www.newegg.com/Product/Product.aspx?Item=N82E16811997016 (DAMN! That's expensive for a fan controller! :):) Have you tried the fan controller with any fans other than the Noctua "Industrial" fans? Link to comment Share on other sites More sharing options...
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