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Seriously, Is this Just Bad Luck Or Normal. Third PSU And Still Having Issues.

M

mikevs

Member
So I replaced my Cosair CX750M as I was still in warranty with Micro Center. The CX series are known for their cheap quality and notorious coil whine which i experienced from day one.

I decided to upgrade to a better PSU Being the EVGA Supernova 750 Modular Gold Rated PSU. It only cost me $89 with rebate in the end I ended up paying only $20 more with rebates than my last PSU. Microcenter also installed it for free.

It also has a 10 year warranty which was great. Being EVGA having great reviews, and with much more high quality parts, you would think all would be fine.

Well it was for about two days.

Instead of coil whine, I am getting this sound of eggs frying. Its like a slight electrical popping sound. Although its way less irritating and less noisy then the coil whine I used to have with the Cosair, it is consistent and does happen under both load and idle at times.

This is my second PSU. I dont know if this is normal noises or a capacitor is broken. At this point I really dont feel like wasting money on gas traveling back and forth to New Jersey where the closest Microcenter is to replace my PSU which is about an hour away.

Unless this noise means something is about to blow up or fry my parts, I might just have to deal with it.

Guys is this noise normal? Will it get worse and should I fear my parts will fry in the near future?

If not I can deal with it if it does not get much louder as it can be easily drowned out but when in quiet settings, the noise is really irritating though not as much as the coil whine I used to have with the Cosair CX series.
 
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You could just be very unlucky w/ PSUs, but typically even Raidmax and Allied PSUs will run for months or a couple years just fine.

I wonder if you have a wiring problem, honestly, with two problem PSUs in a row.

OTOH, if you run your PC from an AVR stepped-wave UPS, that could be the culprit to both, and the easiest solution there would be to get a PSU that is known to not have active PFC.
 
Cerb said:
You could just be very unlucky w/ PSUs, but typically even Raidmax and Allied PSUs will run for months or a couple years just fine.

I wonder if you have a wiring problem, honestly, with two problem PSUs in a row.

OTOH, if you run your PC from an AVR stepped-wave UPS, that could be the culprit to both, and the easiest solution there would be to get a PSU that is known to not have active PFC.
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Well my last Cosair PSU was broken for sure the guy at Microcenter even heard it the horrendous coil whine

Cracklings seems to be worse than coil whine it seems from what I am hearing as it is physical damage to the capacitors.

Guess I will be traveling to Microcenter yet again for my 3rd PSU, Prob be on Tuesday as that's when I have available time, plus I am still under warranty.

This is really frustrating and depressing. Brand new gaming rig and having all of these problems. Better safe than sorry as a bad PSU could fry all of my components and them I am really screwed. Its an annoying inconvenience but better than the alternative.
 
However, if it's a wiring problem, a good PSU could still end up frying your components. Definitely check it out, somehow, because the chances of two bad PSU samples in a row are just so slim. A cheap multimeter, or surge strip with fault detection, could offer some positive results, if it's bad enough (IE, ~120VRMS and no fault detected doesn't mean nothing's wrong, but unbalanced legs or a fault detected means something definitely is).
 
Cerb said:
However, if it's a wiring problem, a good PSU could still end up frying your components. Definitely check it out, somehow, because the chances of two bad PSU samples in a row are just so slim. A cheap multimeter, or surge strip with fault detection, could offer some positive results, if it's bad enough (IE, ~120VRMS and no fault detected doesn't mean nothing's wrong, but unbalanced legs or a fault detected means something definitely is).
Click to expand...

I have two surge strips with fault detection, I tried this before, I have tried multiple PSU power wires as well along with plugging my computer direct to multiple outlets and had the same problem.

I think its just really bad luck. I sure hope this does not happen again with my third one. Microcenter has to honor my warranty as am still in until Jan 15th, They even required me to bench test this new PSU for a day at their location to keep this PSU in warranty as I was going to leave the same day they installed it. The bench result for my CX series made it whine like crazy.

The EVGA was silent and was when I got home for two straight days and I was at ease. Now its making cracking sounds like some capacitor blew.

Keep in mind I dont overclock at all and have my computer perfectly ventilated away from the carpet and is on my desk.

I double checked all of my wires in my computer case as well and all were perfectly snug in.

I turned off my PSU to prevent any damage that could occur to my other parts while the computer is off.

This is very frustrating. My old gaming rig I had for over 6 years had no issue except a faulty video card which was fixed by Gigabyte and my PSU finally died after 6 years of use and warranty expired.

I barely have this computer for 3 weeks and I had to replace my original PSU and now will be replacing another.
 
I barely have this computer for 3 weeks and I had to replace my original PSU and now will be replacing another.
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I find it very hard to believe you have 2 bad PSU's in a row. No, the Corsair CX isn't the height of quality (and you aren't paying for it, either...) but they are serviceable units (I have 3 of the CX430's...) and should be GTG out of the box. Same with the EVGA.

Talk with the MC service tech... maybe swap out the EVGA for a Corsair TX-series or maybe a SeaSonic PSU and possibly have him check the wiring, too. There is something else going on other than a bad PSU...

Just out of curiosity... do you really need 750w?
 
PSU's are not supposed to make weird noises. No popping, clicking, whining, or any of that. The most noise they are supposed to make is if the fan ramps up and we all know what a fan is supposed to sound like.

Bad luck for sure but it seems to me like you are doing the right thing by replacing it again.
 
Cerb said:
However, if it's a wiring problem, a good PSU could still end up frying your components. Definitely check it out, somehow, because the chances of two bad PSU samples in a row are just so slim. A cheap multimeter, or surge strip with fault detection, could offer some positive results, if it's bad enough (IE, ~120VRMS and no fault detected doesn't mean nothing's wrong, but unbalanced legs or a fault detected means something definitely is).
Click to expand...

Speaking of which ("unbalanced legs"), in my apt., the lights in my bedroom and the bathroom off of it dim, and the halogen table lamp in the living room simultaneously brightens. This happens quite often.
I have electric heat too.

Is this an indication of a problem?
 
Well it seems like the noise has faded for now, the computer has been running for awhile and the noise is gone.

I switched out my surge protector with a brand new one and the noise has vanished.

Although I fear that if it was my last surge protector, it already did some damage to my PSU that will make it break prematurely.

I am going to replace the PSU anyway just in case.

Could it have been my last 8 year old surge protector? That could have caused my brand new PSU to make crackling noises, and should I replace it as it could have done some damage to my PSU even though the noise is gone now with a brand new surge protector strip?
 
OP - are you sure its the power supply? It isn't easy to tell sometimes. I have had whiny motherboards, whiny video cards, and at least one whiny power supply.
 
Binky said:
OP - are you sure its the power supply? It isn't easy to tell sometimes. I have had whiny motherboards, whiny video cards, and at least one whiny power supply.
Click to expand...


YESSSSSS I have told so many users this lol. You can put your ear up to the power supply and cleary hear the crackle. Every other part is dead silent.
 
UPDATE :
Wow I am really getting some bad luck. My 3rd PSU was working fine for about 4 weeks until my fan starting making loud clicking noises and my in store warranty has expired.

Going on my 4th PSU in less than 2 months. The first two were replaced in store

I must say though EVGA customer support it freaking amazing 10 year warranty is also nice. They will be shipping me a new and tested PSU and will be paying for the shipping both ways. I just have to send back the old one when I get the new PSU.

I will be out of a PSU for about two weeks I assume. I just hope that the replacement will not give me any problems this time. Never had this much issues with a computer than is less than 2 months old

Here is what I have been though

1st PSU was a Cosair CX750 (Bad coil whine)

2nd PSU EVGA Supernova 750G (Electrical Popping Noises)

3rd PSU EVGA Supernova 750G (Terrible Fan Noise/Bad Bearing)

The EVGA representative told me that I am not the only one with this issue as there have been a recent bad batch of defective PSU units with similar issues. He said the one I will be getting will resolve the issues I have been facing.

If you check the most recent reviews of the EVGA SuperNova 750G on newegg, you would see that many of them have a similar issue being a broken fan within a few days, weeks or months owning it.

Hopefully the PSU I get wont have these problems again because this is getting frustrating. I really cant catch a break. 🙁
 
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You should have just gone Seasonic. Seriously. A nice new shiny Platinum or Gold X Series. I would never use a CX for any heavy duty or important build and have zero experience with Seasonic. Personally, since Seasonic's are harder to get around here I use an Antec in this office box (Seasonic built) and an FSP Aurum in my gaming box.
 
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