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Fan Controller Issues

post #1 of 6
Thread Starter 
Found out the problems, the resistors popped in the fan controller. It WAS still working till I dissected it. Working on a fix now, moved thread here.
Edited by pioneerisloud - 2/9/11 at 3:49pm
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post #2 of 6
Have you checked the motherboard of the fan controller to make sure theres no bends or bad connections/capacitors?
Edited by jdcrispe95 - 2/9/11 at 11:37am
    
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post #3 of 6
Thread Starter 
Quote:
Originally Posted by jdcrispe95 View Post
Have you checked the motherboard of the fan controller to make sure theres no bends or bad connections/capacitors?
I have checked it. I have it open right now.

My "High" speed, has no resistors on it. Just a diode (all speeds have the same exact diode, and its only there to prevent electricity from going backwards).

My Medium speed, there is ONE resistor. It's blown out bad. No idea what it is.

My Low speed, there is ONE resistor. It's in tact (since I rarely use Low).

I need to replace the resistors somehow, with ones that will allow my fans to run without popping. And get the voltage back up to where it should be.

It seems that its MADE to run at those low of voltages.

I need to change that, so it runs 12v / 7v / 5v.
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post #4 of 6
Quote:
Originally Posted by pioneerisloud View Post
I have checked it. I have it open right now.

My "High" speed, has no resistors on it. Just a diode (all speeds have the same exact diode, and its only there to prevent electricity from going backwards).

My Medium speed, there is ONE resistor. It's blown out bad. No idea what it is.

My Low speed, there is ONE resistor. It's in tact (since I rarely use Low).

I need to replace the resistors somehow, with ones that will allow my fans to run without popping. And get the voltage back up to where it should be.

It seems that its MADE to run at those low of voltages.

I need to change that, so it runs 12v / 7v / 5v.
Okay, I would recommend signing up for youtube and shooting a message to "Maxxarcade" as he knows just about everything about electronics, considering I am not a qualified electrician, I shouldn't really tell you what to replace the resistor's with.

Hope I helped, Good luck.
    
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post #5 of 6
Quote:
Originally Posted by pioneerisloud View Post
I have a Mutant Mods Furious Fan Controller. Problem being, I just double checked the voltages coming out of it. On High, my fans get 11.9v, on Medium they get 3.9v, and on Low they get 2.7v.

I tested my other 12v rails coming off my PSU, and they're perfectly fine (they hold SOLID at 12.1v idle and load). So the issue is definitely with the fan controller. What can I do to improve the voltage that I'm getting out of it?

For more information:
There's 3 controller knobs. I use the first as intake with 4x 120mm LED fans (Rosewill) on it. The second I use as my CPU cooling fans (2x Delta 120x25mm's), and the third I use as my exhuast (3x Sunon 95CFM 120m25mm).

I noticed this issue because the Sunon fans don't work AT ALL on anything but High speed.
I don't think you have any kind of real problem there on the 12v setting anyway. There is no such thing as a perfectly efficient transfer. There's going to be some voltage leakage in there and you'll never get 100% if there are any pots (potentiometers) in there. I'm assuming there are no pots since you mention 3 speeds. However, 11.9 is well within any kind of tolerance you're looking at. Are you measuring with a multimeter? Regardless, think of everything the juice flows through on it's way out of the fan connector. Concerning the middle and low speeds, have you ever measured resistors with a multimeter? You'll never find two the same. They are rated for tolerance (within 1%, 5%, 10%, 20%) of stated value. If you want to replace the low and middle speed resistors, I would recommend checking the markings on the resistors and using an online resource to decode them. I'll bet that they have a 10 to 20% tolerance causing those readings you see. Go to mouser or bgmicro and find replacements at the same resistance and power rating and choose the ones with the highest tolerance (at least 5%).
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post #6 of 6
Thread Starter 
Found out the problems, the resistors popped in the fan controller. It WAS still working till I dissected it. Working on a fix now, moved thread here.
Edited by pioneerisloud - 2/9/11 at 3:49pm
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Hard DriveHard DriveOptical DriveCooling
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MonitorKeyboardPowerCase
Dell 2007FP Cheap Toshiba (R.I.P. Ducky) PC Power & Cooling Silencer MKIII 950w Cheap Garbage (free) 
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