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-   -   Is my PSU faulty? (https://www.overclock.net/forum/31-power-supplies/1727758-my-psu-faulty.html)

DiceAir 06-18-2019 02:09 PM

Is my PSU faulty?
 
Hi there.

I have the following rig
i7 4790k
ASUS vii ranger (latest bios)
GTX 980 ti
Corsair ax 850 80+ gold
ADATA DDR3 2400mhz
3 ssd + 2 HDD
ASUS ROG PG279q
Corsair air 540

So my issue is that I can't switch on my pc with the power button but only when I keep switching my PSU on and off a couple of times then it goes on and everything seems fine. The psu is a bit old now. I though maybe it's a power issue going into the PSU and bought a ups to give me better power to the psu and still same issue.

Now before I fork out money on another psu I don't have another system to quickly test the PSU. I know about the paper clip test but before I go through that maybe someone had similar issues and can confirm if PSU or not. I would rather not upgrade the psu cause I can spend that money towards upgrading the rest of my system. If it's the psu then I want to upgrade to corsair AX1000. I know I don't need 1000w but I'm from South Africa and AX1000w is the only 80+ titanium psu and from the reviews the ripple is one of the best if not the best. I don't know if I should rather go for something lower like Corsair RMi/RM series or any of the other top tier rated psu that's a little bit cheaper.

Anyway hope someone can help me figure this out as I haven't changed anything really that I would think can cause the issue.

shilka 06-18-2019 10:10 PM

Do you really need that level of efficiency?
The AX1000 is based on the Seasonic Prime which might be cheaper

What brand is your old PSU by the way?

Rocklin 06-18-2019 10:28 PM

Good reviews on Corsair supplies Newegg South Africa

shilka 06-18-2019 10:30 PM

Quote:

Originally Posted by Rocklin (Post 28010140)
Good reviews on Corsair supplies Newegg South Africa

Those are users reviews so they are not useful in any way whatsoever none of them are professional reviewers with access to professional level testing equipment nor have any of them done any load testing so they are useless

JackCY 06-18-2019 10:45 PM

Seasonic, Corsair, EVGA, ... shilka can give you a list of decent brand+model PSUs.
You don't need more than 650W really but if you plan to upgrade to some top expensive latest parts then sure 850W is good to have.

DiceAir 06-18-2019 10:54 PM

Quote:

Originally Posted by Rocklin (Post 28010140)
Good reviews on Corsair supplies Newegg South Africa


I agree. I love to read some reviews that does ripple testing etc.

But the thing is I still not 100% sure if it's actually my PSU that is faulty or the motherboard.

Quote:

Originally Posted by JackCY (Post 28010152)
Seasonic, Corsair, EVGA, ... shilka can give you a list of decent brand+model PSUs.
You don't need more than 650W really but if you plan to upgrade to some top expensive latest parts then sure 850W is good to have.

Ok so i will never go for HEDT platform always mainstream like for example if I have to upgrade now i will go 9900k or ryzen 3800x. I have tested with a wattage meter and my current system on full load cpu and gpu use about 450w max. so typical gaming under that and that's with custom bios on my gpu and it's watercooled with nzxt g12 and corsair h75.

shilka 06-18-2019 11:18 PM

Quote:

Originally Posted by DiceAir (Post 28010158)
I agree. I love to read some reviews that does ripple testing etc.

But the thing is I still not 100% sure if it's actually my PSU that is faulty or the motherboard.



Ok so i will never go for HEDT platform always mainstream like for example if I have to upgrade now i will go 9900k or ryzen 3800x. I have tested with a wattage meter and my current system on full load cpu and gpu use about 450w max. so typical gaming under that and that's with custom bios on my gpu and it's watercooled with nzxt g12 and corsair h75.

Did you take the rated efficiency of your PSU off the number you got from the wall?
If not then the number is not actually 450 its actually somewhere around 400 so anything more than a 650 watt is overkill

The Seasonic Focus Plus or the Seasonic Prime / Prime Ultra or the Corsair RMx are all good options
The AX1000 is way overkill

DiceAir 06-18-2019 11:26 PM

Quote:

Originally Posted by shilka (Post 28010166)
Did you take the rated efficiency of your PSU off the number you got from the wall?
If not then the number is not actually 450 its actually somewhere around 400 so anything more than a 650 watt is overkill

The Seasonic Focus Plus or the Seasonic Prime / Prime Ultra or the Corsair RMx are all good options
The AX1000 is way overkill

ok It's same as kill-a-att so efficiency wasn't taken into account. I don't think 650w is overkill cause psu is most effective on 50% load. The only reason i was looking at the AX1000w is because I can't get it here in South Africa. Newegg South Africa is not actually in south Africa so shipping cost, customs etc will still need to be factored in . I will link to a view online shops we get here that I usually look at

https://www.evetech.co.za/PC-Compone...supply-78.aspx
https://www.rebeltech.co.za/61-power-supplies
https://www.wootware.co.za/computer-...power-supplies


This still don't answers my question. Do you people still think my PSU is at fault here???

looniam 06-18-2019 11:40 PM

Quote:

Originally Posted by DiceAir (Post 28010158)
I agree. I love to read some reviews that does ripple testing etc.

But the thing is I still not 100% sure if it's actually my PSU that is faulty or the motherboard.



Ok so i will never go for HEDT platform always mainstream like for example if I have to upgrade now i will go 9900k or ryzen 3800x. I have tested with a wattage meter and my current system on full load cpu and gpu use about 450w max. so typical gaming under that and that's with custom bios on my gpu and it's watercooled with nzxt g12 and corsair h75.

did you account for psu efficency? (nevermind, just say your reply)

if not than the 450 is 405 assuming 90%. i have a similar set up i7-3770K [email protected] and 980ti bios modded 1.27v/ 350 watts. with both prime95 and kombuster's fuzzy doughnut (really kombusters version of furmark) max load was ~520 watts. gaming and booting into windows ~330 watts idles at ~90 watts. i don't know about you but my rig is on more than just gaming.

maybe i'm weird but i think a psu should fit like a glove ~20% at idle and 80% max load. a 650 watt PSU is 130 to 520 watts and 325 watts for the holy grail 50% load sweet spot.

however if you really want that AX1K here is a german review and its a grea PSU.
https://www.tweakpc.de/hardware/test...ax1000/s01.php

though looking around on the newegg SA site there is a nice looking RM650i
thats half the price and has an excellent rating on jonnyguru
https://www.jonnyguru.com/blog/2015/...ower-supply/6/
(again, just saw your reply - sorry about the newegg links)
if you do want to try and trouble shoot your system w/o another psu, screwing around in the bios and whatnot probably won't help much. even the "paper clip" test will only confirm the psu turns on, which you already know.

its hard to judge what is going on because, well, does it trip off or is this something that occurs when trying to start the system from a cold boot? really try by passing the power button on the case, that is what could be going flaky, if its a cold start up issue. shorting the power pins on the mobo would be the next step?

DiceAir 06-19-2019 12:02 AM

Quote:

Originally Posted by looniam (Post 28010174)
did you account for psu efficency? (nevermind, just say your reply)

if not than the 450 is 405 assuming 90%. i have a similar set up i7-3770K [email protected] and 980ti bios modded 1.27v/ 350 watts. with both prime95 and kombuster's fuzzy doughnut (really kombusters version of furmark) max load was ~520 watts. gaming and booting into windows ~330 watts idles at ~90 watts. i don't know about you but my rig is on more than just gaming.

maybe i'm weird but i think a psu should fit like a glove ~20% at idle and 80% max load. a 650 watt PSU is 130 to 520 watts and 325 watts for the holy grail 50% load sweet spot.

however if you really want that AX1K here is a german review and its a grea PSU.
https://www.tweakpc.de/hardware/test...ax1000/s01.php

though looking around on the newegg SA site there is a nice looking RM650i
thats half the price and has an excellent rating on jonnyguru
https://www.jonnyguru.com/blog/2015/...ower-supply/6/
(again, just saw your reply - sorry about the newegg links)
if you do want to try and trouble shoot your system w/o another psu, screwing around in the bios and whatnot probably won't help much. even the "paper clip" test will only confirm the psu turns on, which you already know.

its hard to judge what is going on because, well, does it trip off or is this something that occurs when trying to start the system from a cold boot? really try by passing the power button on the case, that is what could be going flaky, if its a cold start up issue. shorting the power pins on the mobo would be the next step?

No problem with the links provided. Oh yeah tried shorting the pins on the mobo. Having the front panel unplugged and then pressing the power button on the motherboard and still nothing. I have the feeling it's to do with the 12v startup voltage. I might do some more testings later or maybe only over the weekend. Currently using an line interactive ups with modified sine wave so I might be able to temporary connect it using another online pure sine wave ups.

power never trips although soemthing weird happened the other day when i switched on my monitor the screen was black but from the very top of the panel to about 5-10cm down there was green blue and purple dots and lines etc. But then all i did was switching my monitor off (not by unplugging but just the power button) and back on it worked just fine. I also did some stress test of different loads from web browsing to watching a video file with hardware acceleration and to gaming and benchmarks and nothing seems weird so far or maybe i don't know that my overclocking/performance is being hindered by the fact that my psu is faulty.


I don't think there is any performance issues related to faulty PSU as far as I know. When I play a game I don't really get where my gpu and cpu isn't being maxed out. The only way I can make my cpu and gpu not maxing out is in games where there is a lot of stuff to draw on screen for example in apex when you jump but that's normal i think. once I land it runs like it should for my system with gpu being maxed out.

I also checked if the fan is working and also checked for capacitor leaking by just looking through grills and where the fan is situated so as far as i can see everything looks fine. One thing I can say is that my psu is pretty old like 7+ years I think so having to buy a new one for the next 7+ years I'm willing to spend a bit more and get a decent psu. I'm not the person that thinks the ax1000 is better than the ax850w just because it's higher wattage. I will ratehr take a 650w-850w that's amazing than a 1000w+ that's worse quality.



Oh sorry for the long reply just one last thing before i forget. sometimes when I do my usual power cycle where i have the press the PSU power switch on and off a few times my pc comes on then goes off and sometimes it goes on and no signal. To fix that have to cycle power switch n PSU again


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