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Corsair AX860i Fan Replacement

post #1 of 3
Thread Starter 
This is my first actual thread here on OCN. I apologize in advance if this post is extremely long, and I greatly appreciate any amount of help on the topic.

The Story

I purchased a Corsair AX860i nearly a year and a half ago and I have been loving every bit of it since, that is up until a week ago, when the internal cooling fan started to go on the fritz. It very suddenly developed that characteristic hissing noise that fans get when they are going under. Today the fan breathed its last breath and currently the PSU isn't in any working order at all. It's at this point that most people would send the unit back to the manufacturer to be serviced, but the problem is that I got this unit from Newegg as a refurb. The fact that I got it as refurbished means that the warranty went from 7 years down to a mere 1 year (and it has been well over a year since that point). Yes, I should have known better, but the fact that I was getting a 80+ platinum PSU at half the price was extremely enticing... and I fell for it. mad.gif
My machine will no longer get past POST and I am frantic that I may have to get an entirely new power supply, something I definitely cannot afford at the moment.

My Solution to the Problem

Since my warranty is null and void, I plan to replace the fan myself and hopefully save myself $200. I want to replace the current dead fan with something from the likes of either Noctua or Noise Blocker. I have run into some problems attempting this, however. They are as follows:
1. The wiring for the stock fan (as far as I can tell) is different from regular PWM wiring. I've tried soldering different wires together and testing them, but to no avail.
2. The connector from the stock fan appears to be the same type as from the heatsink fan of a graphics card, making standard connections impossible.
3. Simply leaving the fan disconnected will not work. I've tried putting a Gentle Typhoon in place of a Noctua and letting my motherboard power it externally from a fan splitter. The PSU's circuitry apparently recognizes that there is no cooling fan when the connector is disconnected. It will shut the entire system off before I even reach the BIOS.
4. I don't have the necessary electronics to monitor which wires output certain signals.
5. I basically have no idea if anything I do is going to work.

From digging around the internet, I discovered the the stock fan is a Yate Loon D12BH-12, a 120mm PWM controlled fan that uses a VGA-type connector. Apparently many others had my exact problems with noise and unreliability, but they all seem to have replaced their fans with aftermarket ones, then control them externally through either software or a fan controller. This seems to have worked flawlessly for them, but I've had nothing but problems from the start. I ordered a 4-pin VGA to PWM adapter cable not too long ago from Amazon http://www.amazon.com/Gelid-CA-PWM-02-Adapter-Sleeved-Cooler/dp/B005ZKZEQA but I am very apprehensive because I'm not certain it will work.

I Need Your Help!

In summary, I am wondering if anybody has experienced my issues with this power supply or any similar Corsair AXi-series PSU. If you solved the problem, I would love to know exactly how you solved it. I would also like to know more about the stock Yate Loon fan other than what is on their spec sheet and what the wiring diagram/pin-out is. I would also like to know if the cable adapter I purchased will be of any use to me. Any relevant information will be greatly appreciated! smile.gif
post #2 of 3
Watching pics of AX860i fan I spot what looks like a thermistor for measuring intake air temp (little green bulb):



Is that so?
HAL-9011
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 960T X6 4.1GHz ASUS M4A89GTD Pro Radeon HD 6870 16 GB DDR3 1600MHz 8·8·8·24 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 4 128GB OCZ Vertex 2 120GB WD Caviar Black 1TB LG DVD-RW 
CoolingCoolingOSOS
Noctua NH-D14 Accelero S1 R.2 + 2x NF-F12 Se7en x64 Se7en x32 
PowerCase
Antec TP-650W CM HAF 912 + 
  hide details  
Reply
HAL-9011
(14 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 960T X6 4.1GHz ASUS M4A89GTD Pro Radeon HD 6870 16 GB DDR3 1600MHz 8·8·8·24 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 4 128GB OCZ Vertex 2 120GB WD Caviar Black 1TB LG DVD-RW 
CoolingCoolingOSOS
Noctua NH-D14 Accelero S1 R.2 + 2x NF-F12 Se7en x64 Se7en x32 
PowerCase
Antec TP-650W CM HAF 912 + 
  hide details  
Reply
post #3 of 3
Thread Starter 
True, it does, but does placement have to do with anything? The only thing I did with it was zip tie it to a 16 gauge wire directly below where the fan hub would sit.
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