2 x Platinum power supply failures? Am i just unlucky?

zeegy · 2 Jul 2016 at 20:29

I had/have a Corsair AX760 which crapped out on me after about 6 months.
running an i5 2500k / GTX780 system.

It would not power on (unless i press and hold the power button for 10 seconds) to which then it would power on.

This unit was RMA'd and I received a new, sealed replacement. and that has been running fine for a while, but again after about 6 months it was being a little problematic.

Have just spent out a lot of money on a new system, X99, 5820k, 1080, 32Gb Ram etc, but decided to use the same power supply. the first few days, it ran like a dream, no issues at all, and now the same characteristics are back... if not worse, as my 1080 appears to glitch from time to time that is worrying me there is an issue with the card

in a nutshell, new build, the same fault occurs. the PC will not boot unless I press and hold the power.... can i assume, another faulty PSU?

I was under the impression the AX were corsairs near best of the best platinum grade, super warranty OEM Seasonic psu's - anyone else experiences similar issues? Should i get another one!?

JanM · 3 Jul 2016 at 16:28

Damn I was just about to buy a cosair AX760i awaiting to see if the psu's are faulty.
However that said it would be extremely unlucky to have the same fault or maybe there is a bad batch going around.

winwin · 3 Jul 2016 at 16:39

could there actually be a fault with your power outlet in your home? perhaps a surge protector isnt working right or something. I had a psu die because of poor electrical wiring in an old home once

Disco_P · 3 Jul 2016 at 17:37

Could it be the case? The power button not properly shorting the pins causing it to not boot? Try manually shorting the pins on the mobo and see if that works.

JanM said:
Damn I was just about to buy a cosair AX760i awaiting to see if the psu's are faulty.
However that said it would be extremely unlucky to have the same fault or maybe there is a bad batch going around.

The AX760 is made by seasonic, the AX760i is made by Flextronics. Completely different units.

BluD · 3 Jul 2016 at 18:30

You can get bad batches, i remember getting 2xOCZ powerstream 600w psus both arrive DOA, i guess you would be able to find other people getting the same problem if that was the situation.

Disco has a good point, did you change your case in the upgrade?

Poneros · 3 Jul 2016 at 18:58

Actually, the ax760i's are known to have had a lot of problems - I'd steer clear.

zeegy · 4 Jul 2016 at 09:20

winwin said:
could there actually be a fault with your power outlet in your home? perhaps a surge protector isnt working right or something. I had a psu die because of poor electrical wiring in an old home once

I did suspect this, So i ran an extension lead from another socket into the PC, just in case. got the same issues.

Disco_P said:
Could it be the case? The power button not properly shorting the pins causing it to not boot? Try manually shorting the pins on the mobo and see if that works.

It did it on my old, and my new case. new motherboard has the same problem. it gets power, mobo is lit up, need to press and hold power supply to power on.
New motherboard has a power on button on the board, Characteristics are the same when this is used over the motherboard pins.

Biz.Kid09 · 4 Jul 2016 at 09:31

I would Have to try another power supply and try running your PC, minus the 1080 (save needing a chunky power supply) and see how it goes.

Buy a completely different brand and model.

FloppyPoppy · 4 Jul 2016 at 09:39

Always look into corsair psus before buying as they have a terrible track record and are very rarely a recommendation for those reasons. You should get yourself a seasonic, evga, super flower or such as they have a much better record.

zeegy · 4 Jul 2016 at 09:44

Biz.Kid09 said:
I would Have to try another power supply and try running your PC, minus the 1080 (save needing a chunky power supply) and see how it goes.

Buy a completely different brand and model.

i do have a spare PSU, but I am unable to test it, though its running my old rig fine.

2 issues -
1 - its all under water. removing the 1080 is a royal pain in the back end.
2 - my new motherboard requires 1 x 8pin EPS AND 1 x 4pin EPS connector, so i need a good psu to test.

I have taken the plunge and gone for a Corsair RM1000x - not best pleased about it though

zeegy · 4 Jul 2016 at 09:45

harry5522 said:
Always look into corsair psus before buying as they have a terrible track record and are very rarely a recommendation for those reasons. You should get yourself a seasonic, evga, super flower or such as they have a much better record.

I did, the Original AX760 is a seasonic unit. thats why I'm so disapointed!

Biz.Kid09 · 4 Jul 2016 at 10:12

Your going to RMA the 760 though right?

Hopefully all goes well with the new one!

zeegy · 4 Jul 2016 at 10:16

Biz.Kid09 said:
Your going to RMA the 760 though right?

Hopefully all goes well with the new one!

Yeah, have bought a RM1000x to replace it, will RMA the ax760 and then probably sell it on the MM

Ace Modder · 4 Jul 2016 at 12:01

and you went Corsair again? Interesting...

Borealis · 4 Jul 2016 at 12:10

The RM1000x is in all fairness a very good PSU, even if it's made by CWT. Review here.

zeegy · 4 Jul 2016 at 12:29

Ace Modder said:
and you went Corsair again? Interesting...

Indeed, have had no other issues other than the ax760, which is now on its second RMA.

used lower series psu's at work for many moons with no failures

... Also, i invested in a white gen2 type 3 cable kit, i wanted to continue to use this where possible (though i had to purchase a type 4 24pin cable to use this new psu)

Glanza · 4 Jul 2016 at 12:31

I'd never go with a Corsair PSU again after getting the 1200i and it dying within 2 days.

Went for a Seasonic 1000w instead and I've had that 4 years with 0 issues.

Disco_P · 4 Jul 2016 at 12:50

zeegy said:
Indeed, have had no other issues other than the ax760, which is now on its second RMA.

used lower series psu's at work for many moons with no failures

... Also, i invested in a white gen2 type 3 cable kit, i wanted to continue to use this where possible (though i had to purchase a type 4 24pin cable to use this new psu)

It could have been the cables. I have had a 24 pin from my RM850 and a dual 6+2 pin from my AX760 cable fail on my corsair PSUs. First one would cause random cutouts and then fail to reboot for a while, the other was causing my GPU to crash or horribly power throttle.

zeegy · 4 Jul 2016 at 13:02

Disco_P said:
It could have been the cables. I have had a 24 pin from my RM850 and a dual 6+2 pin from my AX760 cable fail on my corsair PSUs. First one would cause random cutouts and then fail to reboot for a while, the other was causing my GPU to crash or horribly power throttle.

I should have popped this into my fault finding actually... as i have a set of white Gen3 Type2 cables I was able to replace cables i suspected were at fault.. (this had crossed my mind)

Same issues did occur - but then, the damage may already have been done to the PSU.