CrazyAngelDude
New member
Hey there everyone. New here on the forums, been subscribed to the Youtube channel for a long time!
I have a bit of an issue.
I have an XFX XXX 750W that I thought was broken so I bought a new one and thought I was unlucky with the first one. Turns out this new one has the same problem as the old one. It's an XFX Limited Black Edition 1000W 80+ Platinum.
I have contacted both the reseller and XFX themselves but they can't seem to help me in any way at all except with an RMA. It's like they're clueless whether or not this even requires RMA or what the issue is here. Obviously I couldn't RMA the 750W while I was still using it as I would be without a computer for weeks, so I bought a new one when they declined to send me a temporary one while mine was being repaired. (The law in Sweden actually says if the customer has to wait more than a few days to get the problem fixed he/she should get a replacement in the meantime.)
Over to my problem. When I connect my 4-pin female molex (PSU) to the 4-pin male molex (Corsair Carbide 400R front fans) the front panel emits a smell that is everything but pleasant. It smells fried electronics. The fans work perfectly, but the button that toggles the LED's on and off does not work. I got to the root of this problem and found a tiny copper cable on the back of my front I/O panel that was fried. This copper cable is necessary for the fan LED's on and off button to work.
So I kept looking for what could have caused this, and contacted Corsair who then sends me a new front panel free of charge. I connected the modular 6-pin to the power supply, but in another port this time thinking the other might be broken, and connected the 4-pin female molex to the male one in the case. Again, the burning smell and the button does not toggle the LED's. Another copper wire fried. I explain this to Corsair, who sends me a third front panel free of charge and I have not bothered since.
I then downloaded OCCT to check voltages in my power supply and it turns out this power supply uses -12v which I thought was an old standard removed 7 years ago, powering serial ports etc. I read that it may fluctuate +-10%, so between -10.8v - -13.2v. Mine reaches -14.6v and I think this might be the issue, not sure though.
I just want to know if anyone have a clue what causes this, and if you don't, could anyone who has a XFX power supply download OCCT and check for me if yours fluctuates just as much as mine or if yours is stable at -12v all the time?
I saw a bunch of people on Youtube testing their power supplies with this program but none of the ones I have seen even has a -12v reading! It's so frustrating!
So if anyone who has an XFX power supply could do that and take a screenshot and link it to me so I see how yours fluctuates I'd be so thankful you have no clue. I've had this issue for over a year without being able to solve it and I'm not sure if it's worth performing an RMA since it may simply just be some kind of BIOS setting or incompatibility with the way my case fans want power or power supply deliver power. Maybe they should be plugged in via a male molex to a fan controller or something. I tried connecting the fans to the motherboard and the LED's started working right away. They were toggled on and didn't require me to push the broken button.
Here are some screenshots I took of how it looks for me.
As you can see, even in idle it fluctuates too much IF it's allowed to fluctuate +-10%.
This is on my 1000W XFX. I get the exact same readings on my 750W XFX one.
Thank you,
CrazyAngelDude
I have a bit of an issue.
I have an XFX XXX 750W that I thought was broken so I bought a new one and thought I was unlucky with the first one. Turns out this new one has the same problem as the old one. It's an XFX Limited Black Edition 1000W 80+ Platinum.
I have contacted both the reseller and XFX themselves but they can't seem to help me in any way at all except with an RMA. It's like they're clueless whether or not this even requires RMA or what the issue is here. Obviously I couldn't RMA the 750W while I was still using it as I would be without a computer for weeks, so I bought a new one when they declined to send me a temporary one while mine was being repaired. (The law in Sweden actually says if the customer has to wait more than a few days to get the problem fixed he/she should get a replacement in the meantime.)
Over to my problem. When I connect my 4-pin female molex (PSU) to the 4-pin male molex (Corsair Carbide 400R front fans) the front panel emits a smell that is everything but pleasant. It smells fried electronics. The fans work perfectly, but the button that toggles the LED's on and off does not work. I got to the root of this problem and found a tiny copper cable on the back of my front I/O panel that was fried. This copper cable is necessary for the fan LED's on and off button to work.
So I kept looking for what could have caused this, and contacted Corsair who then sends me a new front panel free of charge. I connected the modular 6-pin to the power supply, but in another port this time thinking the other might be broken, and connected the 4-pin female molex to the male one in the case. Again, the burning smell and the button does not toggle the LED's. Another copper wire fried. I explain this to Corsair, who sends me a third front panel free of charge and I have not bothered since.
I then downloaded OCCT to check voltages in my power supply and it turns out this power supply uses -12v which I thought was an old standard removed 7 years ago, powering serial ports etc. I read that it may fluctuate +-10%, so between -10.8v - -13.2v. Mine reaches -14.6v and I think this might be the issue, not sure though.
I just want to know if anyone have a clue what causes this, and if you don't, could anyone who has a XFX power supply download OCCT and check for me if yours fluctuates just as much as mine or if yours is stable at -12v all the time?
I saw a bunch of people on Youtube testing their power supplies with this program but none of the ones I have seen even has a -12v reading! It's so frustrating!
So if anyone who has an XFX power supply could do that and take a screenshot and link it to me so I see how yours fluctuates I'd be so thankful you have no clue. I've had this issue for over a year without being able to solve it and I'm not sure if it's worth performing an RMA since it may simply just be some kind of BIOS setting or incompatibility with the way my case fans want power or power supply deliver power. Maybe they should be plugged in via a male molex to a fan controller or something. I tried connecting the fans to the motherboard and the LED's started working right away. They were toggled on and didn't require me to push the broken button.
Here are some screenshots I took of how it looks for me.
As you can see, even in idle it fluctuates too much IF it's allowed to fluctuate +-10%.
This is on my 1000W XFX. I get the exact same readings on my 750W XFX one.
Thank you,
CrazyAngelDude
Last edited by a moderator:
), but if I interpret the screenshots correctly, your other voltages are in spec?
