13 amp fuse blows when start button is depressed with Corsair AX1200 PSU power switch turned off
- Thread starter RobertoF
- Start date
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- Sep 13, 2010
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- Jan 1, 2013
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^ I'm assuming he means the power switch on the PSU itself - if so this is a real worry as there should only be the tiniest residual current flowing - only just measurable with a multimeter.
Certainly not enough to trip or blow a 13a fuse,there should be no feedback anyway at all.
I'm guessing a wall socket adapter of some sort is being used now - op needs to post more info.
Certainly not enough to trip or blow a 13a fuse,there should be no feedback anyway at all.
I'm guessing a wall socket adapter of some sort is being used now - op needs to post more info.
Thanks everyone!
I'm referring to the start button on the PC. I have been through this process in the past to reset the PC when Windows has hung and the PC will not restart. What I do is to turn the power off using the switch on the PSU and then hold the ON switch on the PC down for a few seconds. As I say, this has not been a problem in the past and has 'reset' ( forgive the non technical expression) so that it will restart OK. When I tried this last time it blew the 13 AMP fuse in the power lead plug with the switch on the PC PSU turned off. I don't understand why this should happen with the PSU switch turned off. I have tried changing the power lead to the PC but the same thing happens.
I am living in the UK.
My PC spec is;
Corsair AX1200 1200W Professional Power Supply
Intel Core i7 3930K Six core (3.2GhHz, 12 Mb cache) Socket 2011
Antec KUHLER H20 920 Liquid CPU Cooler
Radeon HD7990 6GB GDDR5 PCI Express Graphics Card
32GB Corsair Vengeance DDR3 1866MHz C10 Quad Channel Memory
Asus Sabertooth Intel X79 Motherboard
Seagate 2 TB Barracuda Green 32 MB Cache SATA II HDD
MS Windows 7 Ultimate
Thanks again everyone!
I'm referring to the start button on the PC. I have been through this process in the past to reset the PC when Windows has hung and the PC will not restart. What I do is to turn the power off using the switch on the PSU and then hold the ON switch on the PC down for a few seconds. As I say, this has not been a problem in the past and has 'reset' ( forgive the non technical expression) so that it will restart OK. When I tried this last time it blew the 13 AMP fuse in the power lead plug with the switch on the PC PSU turned off. I don't understand why this should happen with the PSU switch turned off. I have tried changing the power lead to the PC but the same thing happens.
I am living in the UK.
My PC spec is;
Corsair AX1200 1200W Professional Power Supply
Intel Core i7 3930K Six core (3.2GhHz, 12 Mb cache) Socket 2011
Antec KUHLER H20 920 Liquid CPU Cooler
Radeon HD7990 6GB GDDR5 PCI Express Graphics Card
32GB Corsair Vengeance DDR3 1866MHz C10 Quad Channel Memory
Asus Sabertooth Intel X79 Motherboard
Seagate 2 TB Barracuda Green 32 MB Cache SATA II HDD
MS Windows 7 Ultimate
Thanks again everyone!
- Jan 1, 2013
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Everything you've just posted points to a faulty power supply mate now.
You've got a fairly expensive rig there .RMA the supply - its not worth the risk IMO.
The simple fact that vyou have to disconnect power & drain the residual current on your board to restart would 9 times out of 10 point to the motherboard but the fact the PSU is busting a fuse when powered off make it obvious its the PSU to me.
Thinking - are you absolutely 100% sure its not the wall socket itself??
You've got a fairly expensive rig there .RMA the supply - its not worth the risk IMO.
The simple fact that vyou have to disconnect power & drain the residual current on your board to restart would 9 times out of 10 point to the motherboard but the fact the PSU is busting a fuse when powered off make it obvious its the PSU to me.
Thinking - are you absolutely 100% sure its not the wall socket itself??
Thanks madmatt30!
I'll take this up with the PC supplier. It still baffles me why the fuse blows with the PSU switch turned off. I'm no expert but aren't these switches double pole and hence when the switch is turned off, completely isolated?
I'll take this up with the PC supplier. It still baffles me why the fuse blows with the PSU switch turned off. I'm no expert but aren't these switches double pole and hence when the switch is turned off, completely isolated?
- Jan 1, 2013
- 24,574
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^ RobertoF - Yes mate absolutely - on a high end unit like the ax off should essentially mean OFF completely.
I've seen problems similar to your windows hanging & having to drain the board caps of power the same way to reboot - but this was on low end boards that were between 5 & 10 years old years ago.
.
It HAS to be the psu mate ,unfortunately some bad units are going to make it through testing due to circuit protection failure or solder creep etc.
You may just be the unlucky owner of one :-/
Your windows hangs etc may also be down to bad voltage regulation/ripple which just backs things up even more.
I've seen problems similar to your windows hanging & having to drain the board caps of power the same way to reboot - but this was on low end boards that were between 5 & 10 years old years ago.
.
It HAS to be the psu mate ,unfortunately some bad units are going to make it through testing due to circuit protection failure or solder creep etc.
You may just be the unlucky owner of one :-/
Your windows hangs etc may also be down to bad voltage regulation/ripple which just backs things up even more.
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