Topic: NEW PSU Died After 24 Hours? - page 2. (Read 2535 times)

so like I said here in the beginning   the psu is bad.

as to what else is wrong you can not tell until you get a new psu.

once you get a new psu   do not attach to the mobo.

just test it with the little black tester  the mobo cable and the power cable.


once it works (95% chance it will work)   do not do any thing  come back here and tell us it passed.

I will give you  a step by step test method   with photos.

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I have tested my psu with psu tester and result is same. I'm scared to touch Power On switch to make the test so it is already on Power ON position before connecting cable to wall. As soon as connecting PSU to wall socket problem repeats itself.
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The same problem being the breaker in your fuse boxes blows?  Did you buy this psu in a rig or separately? If you bought this in a rig perhaps the seller used refurbished psu's to save cost.  The psu is definitely bad if when you tested it by itself it blows the fuse. At that point if working correctly the psu is pulling almost no power. I see you were using power save bios so my assumption you must be pulling more than 1200 watts was wrong.
The rig was mining before you tried the 6th card?
When you are testing with the psu tester are all the other cables disconnected? Of course the 24 pin must be connected or maybe not if the tester plugs directly into the psu.

 If you still have the gpu cables connected to the psu but not the gpu's. I am wondering if you pulled to much power on 1 of the gpu connectors. This would cause the wires to get hot enough to melt the coating. Then underneath the sheath the individual wires would be touching. That would be a short and cause this problem.

I have tested my psu with psu tester and result is same. I'm scared to touch Power On switch to make the test so it is already on Power ON position before connecting cable to wall. As soon as connecting PSU to wall socket problem repeats itself.

I haven't mentioned but I was using modded bios from Jukebox (Powersave bios) and was pulling around 820 watts from wall. If i downvolt i was able to pull around 700 watts.

Seller is kind enough to offer a replacement. But I'm afraid a replacement will cause same issue. So I need to take measures to prevent same problem if it is a mistake on my end. I'm also willing to re-pay the item cost, if it turns out to be my mistake.

It is PSU faults , it is defective , File a consumer complaint and ask for a refund .

If you know exactly what you are doing when you upgrade a circuit breaker from 15 to 20 or 25 to 32 amps it means you know to upgrade the wire.

But in the case of the op. Whom has no fucking idea of what he is doing he needs to be more careful.

My early post told him to rma the psu.

He did not he upgraded the circuit breaker.  And of course popped the breaker.

I offer my prayers for the op and his family and the fireman that serve his town.

 NEVER EVER DO THAT.

 You have just created a MAJOR fire hazard.

 It is safe to replace a breaker with one at a LOWER amperage rating, but NEVER EVER put a higher-rated breaker on a circuit.



 As far as the power supply goes - it was probably defective, the most common time for anything electronic to die is very early in it's lifetime (this is commonly known as "infant mortality"), even folks that make good gear will have occasional failures early on.

 Probably since it's so new you can get it replaced through the dealer you bought it from.



 Most if not all power supplies in the 1KW+ rated range are capable of supplying their full rated output or very close to it on just the +12V rail(s).
 It doesn't hurt to CHECK ahead of time though, there are a FEW exceptions out there (or used to be).

actually, both conditions will cause it to pop.

if he only had the power supply hooked up to the circuit breaker, then it's highly unlikely he overloaded it, but instead shorted it because a properly function 1200w power supply will not pull enough current to overload a 25 amp circuit circuit breaker.

Dude even if you know what your doing you should never upgrade the circuit breaker. The reason circuit breaker have rating is to match the rating of the wire in the wall. So unless you change the wire there is never a reason to upgrade the breaker.

@ op I don't want to curse at you and call you terrible names.

But I have four firefighter relatives alive and one dead ( World Trade Center)

Your choice of putting in a bigger breaker was bad. Unsafe and if you had a fire with loss of life criminal neglect.

Never put in a bigger breaker. Unless you know exactly what you are doing.

Please be more careful.

yes, of course, PSU is probably dead now and it was most likely not what started his problems, you are right.
Phil told him how to test PSU without connecting it to anything (with a plastic dummy/jumper short for the 24 pin connector, which is usually included in the box these days).

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i am not sure what is above based on; instructions clearly say 1198.8W on 12v rail:
http://www.evga.com/Products/Product.aspx?pn=220-P2-1200-X1

he messed up something else OR his wiring is old OR EVGA is defective (least likely in the beginning, but likely now).
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That was based off my 860 plantinum evga. The model I have is only rated a 752 on the 12v. Also, the stuggles I went through when I could not dual mine even 5 gpu's without the overcurrent protection shutting off the psu. 1 ref 480 I though would be 160 and 4 470 I though were 120. Total should have been 680. The walmeter would say around 850. I had not counted for the overvoltage nor the fact it was really 752 on 12v and not 860.

I do see I made an incorrect assumption that his psu was simuliar. However, the majority of psu's are like mine. The 12 volt rail is almost always lower than the psu rating.

I reviewed the specs and was wrong. This psu will output 1200 watts on the 12volt rail. However. Most psu's are not rated of the 12v , I see this one is.
If the psu keeps shutting off from overcurrent then he is pulling to much current. THAT IS THE DEFINITION OF OVERCURRENT.

I have 2 rigs each with 1 ref 480 and 5 rx 470. They each pull over 1200 watts while dual mining. Have not tried zcash miner since verion 9. On version 9 they would run for short periods until the spikes overloaded the 12volt. So I know 6 480's will pull even more.
  You assuming psu's could be defective. The odds are so slim you would have a better chance at hitting the lotto.  I am a hardware expert. It is not like a cap can be incorrectly made.  The only thing that would make a psu defective would be a bad solder joint.
 

If he had modded roms and was only mining eth that yes the psu could be the problem. Overclocked ref 480's dual mining pull 225 watts. so do the math. 6 x 225 is higher than 1200. Even non ref 480's pull 200. So if 1 gpu spiked it would go over the 1200 watts. The fact that the psu is working but keeps shutting off due to overcurrent protection eliminates the possibility of the psu being fault. IMHO. Yes . I know when you google tdp rx 480 it says 140 to 160 watt. That is on stock. On stock settings it would take 3 years for roi if your electric is like mine at 13 cents per kilowatt.

Now that the psu is blowing the circuit breaker the psu is probably bad. That is not what started his problems, though.

A poped circuit breaker means a short circuit not an overload ......thats it , if you power up the psu only and it did the same problem then you have a shorted psu

that psu has overcurrent protection, it should just shut down if overloaded. not blow and make a "bang" noise, which indicated physical damage to the psu.

the psu is toast.

RMA it.

i am not sure what is above based on; instructions clearly say 1198.8W on 12v rail:
http://www.evga.com/Products/Product.aspx?pn=220-P2-1200-X1

he messed up something else OR his wiring is old OR EVGA is defective (least likely in the beginning, but likely now).

No it should not. 6 rx480's will pull over 1000 watts. You are not realizing a 1200 watt psu will only output a max of 1000 watts of 12volt power. GPU'S only use 12 volt. No 5 or 3 volt rails ever connect to gpu's. Sorry but you are not correct as you have no math to back up your statement. Only incorrect assumption. If you had 6 undervolted 480's it might pull around 1000. That is if you are running stock firmware and no overclocking That is also assuming you are ming eth only. No zcach , no dual mining no xmr..However, even then each gpu will spike and eventually you will go over 1000 and blow your psu.
     I am sure you ignorantly responded " 1200W power supply should be able to support 6X RX 480" without even looking at the side of the psu which would have clearly stated what I am tellinmg you.

1200W power supply should be able to support 6X RX 480.

You have a 1200 watt psu. Look at the side. That is not 1200 watt of 12volt. That is most likely 1000 at 12volt and 200 at 5 and 3 volt. So good job you killed your psu. The psu was not faulty as it was working until you overloaded the 12 volt rail. You should not rma as the problem was with your lack of knowledge and not the PSU.

Hey guys he said his psu made a loud popping noise.

95% chance = popped cap = dead psu = rma


At op.

that psu comes with this part


https://www.newegg.com/Product/Product.aspx?Item=9SIA2F84BC9923&cm_re=evga_1200_p2-_-17-438-029-_-Product

1)first turn switch on psu to off

2) so plug power cable into wall
3) plug psu power cable into psu power switch on psu is off
4) 24 pin mobo cable only no other cable into psu
5) tester on the open end of mobo cable

then using the switch on the psu turn it to on

my guess is the circuit breaker in your home trips due to a psu short



see this