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Did My SeaSonic X-850 Kill 3 CPUs?

post #1 of 15
Thread Starter 

I would like to know how I can check if my power supply is fully functional.

SYSTEM SPECIFICATIONS
My System:
Mobo - ASUS P8P67 Pro Rev 3.0, BIOS 2303
CPU - Intel Core i7-2600K
RAM - MV-3V4G3D/US, 4 DIMMs
GPU - 012-P3-1570-AR
PSU - SeaSonic X-850 (SS-850KM Active PFC F3)

Borrowed System:
Mobo - Intel DP67DE, BIOS 1448
CPU - Intel Core i5-2400
RAM - F3-12800CL8D-4GBXM, 2 DIMMs
GPU - ASUS EAH5770
PSU - EA-380D Green

BACKGROUND
I have had 3 CPUs die in my system, and 2 of them were replacements that died instantly. My first CPU died while the system was booting, and I did not hear, see, or smell anything unusual when it happened. My computer had shut off as if it was unplugged. The CPU was about 1.5 years old, which is the age of my PSU. My system had not been moved in about a month, so an electrical short is unlikely.

I've already been approved for a advanced motherboard RMA, and I should be receiving the new mobo tomorrow.

TROUBLESHOOTING

I jump started my PSU by following the instructions on SeaSonic's site, and all of my peripherals (2 HDDs, 2 Fans, 1 Optical Drive) powered on.


My system's GPU and RAM have been individually tested in a borrowed system, and the system passes the POST when they're installed.

When the dead processor was installed in my system, it's PSU would not power on unless I unplugged the 8-Pin CPU power connector; but when the dead processor was installed in the borrowed system, it's PSU would power up the system for few seconds before shutting off.

I measured the voltages on my PSU's

  • 4-Pin peripheral
  • 8-Pin CPU power
  • 6/8-Pin PCIe
  • SATA power
  • 24-Pin mobo

connectors at no load and with ~20W load from my peripherals. Here are the results:

  • 12.30V (12VDC)
  • -11.88V (-12VDC)
  • 5.05V (5VDC)
  • 5.12V (5VSB)
  • 3.38V (3.3VDC)
  • 3.25V (PSON)

I measured the same voltages on all of the connectors I checked, but it was sometimes lower by 0.01V due to the length of the cable.

Please tell me if my PSU is fully functional. If my troubleshooting is not conclusive, please tell me what other troubleshooting I should do.

 

MY CONCLUSION

The PSU should *hopefully* be in working condition. Reasons:

  • 12V components survived except for the CPU
  • Voltages are well within ATX 2.2 spec
  • Components turned on with the 8-Pin CPU unplugged, and they were not damaged
  • PSU did not turn on when 8-Pin is plugged in because it doesn't power on when there is a faulty component. In this case it was the CPU and/or mobo (VRMs?).

 

UPDATES

Dec. 21

My replacement mobo arrived.

I decided not to take a risk by using my PSU, so I filled in the RMA form and sent it in. SeaSonic gave me the tracking # for my advanced RMA, and the replacement PSU should arrive Jan. 2. If I can confirm that my old PSU is in working condition, then I will use it until I get the replacement.

 

Question:

If I don't see physical damage on the old PSU's cables, is it necessary to replace them with the new ones? The voltages seemed fine, which mentioned in the OP.

 

 

 

Customer Support

Intel:

Excellent/Good

My first CPU was approved for RMA without an issue. My 2nd and 3rd CPU were replaced by Advanced RMA at no cost and with a pre-paid return shipping label. Shipping was 2 day international. However, If they were more knowledgeable, I wouldn't have been the one who suggested that my mobo or PSU were the problem.

 

ASUS:

Good

They were quick to issue an advanced RMA for me, and the mobo arrived in 4 days (=/>2 days processing, =/<2 days shipping).

 

SeaSonic:

Good

After they responded to my email, I called them to ask about the RMA form and they picked up right away. They set up an advanced RMA and had the tracking # sent to me within 45min of sending in the RMA form. The PSU arrived within 5 business days.


Edited by nawon72 - 3/31/13 at 4:30pm
post #2 of 15
I am surprised no one has answer this. But the steps you're doing is what I would be recommending if that's the case.
post #3 of 15
It could have been the motherboard, assuming you were using it with the three CPUs that had died. My old MSI P67A-GD65 had some kind of a electrical short which caused it to kill not only one of my CPUs but the person I sold the board to. mad.gif
post #4 of 15
eww, and yeah.. as previous overclock.net member's have said. You took the necessary steps to solving the problem by returning in the Motherboard, CPU, and PSU for RMA, (shot CPU). Good job, now we will see what the cause was, and it most likely will never happen again. if it was the psu it would have also friend the motherboard, I think the probably lies in the motherboard, may want to rma your ram too just to be safe if you have old ram lying around use that.
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post #5 of 15
Thread Starter 
Quote:
Originally Posted by SimpleTech View Post

It could have been the motherboard, assuming you were using it with the three CPUs that had died. My old MSI P67A-GD65 had some kind of a electrical short which caused it to kill not only one of my CPUs but the person I sold the board to. mad.gif

I'm pretty sure it was my mobo (ASUS P8P67 Pro 3.0) that had killed all 3 CPUs. I checked my 4th CPU in the "Borrowed System", and it works fine.

 

Did the electrical short occur randomly while you were using the computer, after you installed a component, or did it exist when you bought the board?

Quote:
Originally Posted by ManOfC View Post

eww, and yeah.. as previous overclock.net member's have said. You took the necessary steps to solving the problem by returning in the Motherboard, CPU, and PSU for RMA, (shot CPU). Good job, now we will see what the cause was, and it most likely will never happen again. if it was the psu it would have also friend the motherboard, I think the probably lies in the motherboard, may want to rma your ram too just to be safe if you have old ram lying around use that.

I don't think they will tell me what the problem was after they test the components.

 

I also believe that the mobo caused all of this. The PSU powered on everything when the 8-Pin CPU connector was unplugged, so it was only the CPU related parts of the mobo that were damaged.

 

Quote:
My system's GPU and RAM have been individually tested in a borrowed system, and the system passes the POST when they're installed.

So I don't think I need to RMA those.

 

 

 

Would anyone use their old PSU if they were in my situation? I haven't been able to use my own computer since Nov. 18 (IIRC), and my winter break will be over by the time I get the new PSU.

 

 

 

 

 

 

Customer Support

Intel:

Excellent

My first CPU was approved for RMA without an issue. My 2nd and 3rd CPU were replaced by Advanced RMA at no cost and with a pre-paid return shipping label. Shipping was 2 day international. However, If they were more knowledgeable, I wouldn't have been the one who suggested that my mobo or PSU were the problem.

 

ASUS:

Good

They were quick to issue an advanced RMA for me, and the mobo arrived in 4 days (=/>2 days processing, =/<2 days shipping).

 

SeaSonic:

Good

I wasn't able to reach them on the phone after 30-50 tries (got a "extension not available"), but maybe that was just me. They responded to my email after 4.5h (at 11:30pm PST), but It went to my junk mail. So I didn't see it until 2 days later when I emailed them again. I called them on the same day to ask about the RMA form, and they picked up right away (3pm PST). They set up an advanced RMA and had the tracking # sent to me within 45min (4pm PST).


Edited by nawon72 - 12/22/12 at 1:31pm
post #6 of 15
Quote:
Originally Posted by SimpleTech View Post

It could have been the motherboard, assuming you were using it with the three CPUs that had died. My old MSI P67A-GD65 had some kind of a electrical short which caused it to kill not only one of my CPUs but the person I sold the board to. mad.gif

The way I read that, is that your old motherboard killed the person you sold it to... poke.gif
 
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post #7 of 15
Thread Starter 
Quote:
Originally Posted by deafboy View Post

The way I read that, is that your old motherboard killed the person you sold it to... poke.gif

I had to read it again to see what your were talking about lachen.gif. I must have unknowingly filled in the blanks tongue.gif.

post #8 of 15
Quote:
Originally Posted by nawon72 View Post

I'm pretty sure it was my mobo (ASUS P8P67 Pro 3.0) that had killed all 3 CPUs. I checked my 4th CPU in the "Borrowed System", and it works fine.

Did the electrical short occur randomly while you were using the computer, after you installed a component, or did it exist when you bought the board?

Glad you've narrowed it down.

The problem with my board is that it came like that originally and it was a RMA replacement for a previous board that didn't work entirely. Due to my stupidity, I assumed it worked and sold it to a member here. Then he messaged me saying that his rig wouldn't POST. He later sent the board back to me which I later tested and found out it fried one of my CPUs. The board, itself, was in good shape. The thing that drove me nuts is that MSI wouldn't pay the shipping to get my CPU replaced. It wasn't a huge deal but their damn board killed it. mad.gif
post #9 of 15
Lol I was like whaaat? A motherboard killed some one? lachen.gif

I would like to have such a board, like this I can kill bad CPU to get brand new one, hoping they can clock higher.

It is a bit weird Intel supplied you 3 CPU. After 2nd replacement it is obvious CPU is not the problem.
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post #10 of 15
Thread Starter 
Quote:
Originally Posted by Just a nickname View Post

I would like to have such a board, like this I can kill bad CPU to get brand new one, hoping they can clock higher.
It is a bit weird Intel supplied you 3 CPU. After 2nd replacement it is obvious CPU is not the problem.

That's not a bad idea...

 

I thought the 1st and 2nd replacements were DOA, so they paid for the advanced RMA both times. I asked them if it was possible for the mobo or PSU to kill the CPU, and they told me I should RMA both of them to just to be sure. I was surprised that they were willing to supply a 4th CPU at no cost instead of trying to narrow down the problem. Maybe it was because I said the replacements were DOA, and they were convinced that they were.

 

Quote:
Originally Posted by SimpleTech View Post

The problem with my board is that it came like that originally and it was a RMA replacement for a previous board that didn't work entirely. Due to my stupidity, I assumed it worked and sold it to a member here. Then he messaged me saying that his rig wouldn't POST. He later sent the board back to me which I later tested and found out it fried one of my CPUs. The board, itself, was in good shape.
The thing that drove me nuts is that MSI wouldn't pay the shipping to get my CPU replaced. It wasn't a huge deal but their damn board killed it. mad.gif

From now on I will never assume something works without testing it.

 

ASUS wouldn't pay for anything either.

 

 

 

Would anyone use their old PSU if they were in my situation? I haven't been able to use my own computer since Nov. 18 (IIRC), and my winter break will be over by the time I get the new PSU.

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