Uxot Posted October 13, 2018 Share Posted October 13, 2018 So..i changed the rear fan of my Trooper SE today for an: "Corsair Air Series AF140 140mm Red LED Quiet Edition High Airflow Fan" Plugged in at the same place it was plugged...now its just blinking,flashing constantly..if i put the case full speed it goes away..but yeah now PC is all loud..what the hell is this Fan problem? I don't get it.. because of lower RPM's the LED's would blink..wut ?!?! Link to comment Share on other sites More sharing options...
c-attack Posted October 14, 2018 Share Posted October 14, 2018 It's a 3 pin DC fan and has a definite minimum start-up voltage. How low are you trying to run it? Your Asus board should be smart enough to do the customary 100% power on at start and then it can run lower after that. Link to comment Share on other sites More sharing options...
Uxot Posted October 14, 2018 Author Share Posted October 14, 2018 the Trooper SE has a front fan controller/LED etc..so i can't use this fan if its plugged there?...k...-_- Link to comment Share on other sites More sharing options...
c-attack Posted October 14, 2018 Share Posted October 14, 2018 (edited) Theoretically you should be able to. I assume it is a standard 5/7/12v 3 speed controller. Nevertheless, something seems to be off. I am not intimately familiar with your case, so if there is something different about the fan controller or its wiring, that would be a the key factor. You could determine if the fan works by temporarily plugging it into the motherboard. Front fan controller? Are you running a splitter off the front control box for the rear fan? **A quick search for your case suggests the LED fan control for the Trooper is a unique CM wiring with separate lines for LED and power for turning the original stock fans on/off. If you don't have a normal 3 pin DC connector for the AF140 LED, it may not work as expected. What kind of connector is on the case end? Edited October 14, 2018 by c-attack Link to comment Share on other sites More sharing options...
Uxot Posted October 14, 2018 Author Share Posted October 14, 2018 Well i plugged the fan in the Case 3-pin wheres the old rear fan was..ill re-check connections tomorrow tho,thx Link to comment Share on other sites More sharing options...
c-attack Posted October 14, 2018 Share Posted October 14, 2018 It should work on the 3 pin. The product page for the Troopersuggests it is a”6 speed” fan controller. It’s possible the lowest two speeds don’t provide enough voltage to start. If you bump it to speed 3, is that enough? Or does it really need to be at max? Link to comment Share on other sites More sharing options...
Uxot Posted October 14, 2018 Author Share Posted October 14, 2018 The more the speed the more the blinking slows at max = no blinking. Link to comment Share on other sites More sharing options...
c-attack Posted October 14, 2018 Share Posted October 14, 2018 Unfortunately, I think this is now too case/wiring specific for me. If you plug the fan into a motherboard header and it works normally (LED will be bright at 12v/full speed and dim as voltage is reduced), then the fan is OK. Past that, this seems like an idiosyncrasy with the case and its fan controller. Aside from someone else who own a Trooper stumbling across this, CM may be the best place to ask. I am wondering if the "3 pin" on the case controller end is really 3 pin. Link to comment Share on other sites More sharing options...
DevBiker Posted October 14, 2018 Share Posted October 14, 2018 The blinking would seem to indicate that they are turning the power on and off quickly rather than directly reducing the voltage. In short, using PWM to simulate voltage regulation. This is actually pretty common on some devices and you'd need a DAC to convert to actual analog voltage control. Link to comment Share on other sites More sharing options...
Recommended Posts