Is my Corsair TX-750W damaged?

[DrOnline]

Hey guys. There are some details to this story, which I must explain, but I will try to stay as brief as I can.

I need some expert advice now. Been building comps for 15 years, but sick to my stomach with troubleshooting, so really need your help!
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In late december we had a lightning strike down the road. My router and the built-in network adapter on my motherboard was destroyed. The computer otherwise worked fine.

In late January my computer started to refuse to load windows. I got to the loading screen, and everything just froze like that, I gave it like an hour, three times or so, never progressed.

Put in the windows 7 DVD and tried to reinstall - comp froze when DVD software tried to launch.

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I wasn't sure what was wrong, so I ordered a new motherboard. Put my CPU (i7-920) and different combinations of the ram into the motherboard, inserted my video card, plugged in everything, 2x 6 pin in video card, cpu fan, 24 pin, 8 pin..

This computer never got to POST. The motherboard has two LED's, one called MEMORY_LED and one called CPU_LED, both bright red in alert... what on earth..?

I troubleshooted this stuff for days.... never got any post.

Moved the parts back onto the supposedly broken motherboard, and that one wouldn't post EITHER.

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So now I have no idea what's up, I order a new CPU (i5-2500k), new memory and new motherboard (Asus P8Z68-V PRO/GEN3). The vendor sell this as a matched kid for ease.

Plug everything in, and I STILL CAN'T GET A POST!!!!!!

There is a LED for CPU and one for the video card slot, one after the other briefly flashes red, then the whole thing just restarts, and repeats the process.

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Thank you if you got this far.

Now: Is this behavior consistent with symptoms indicating damage to the PSU?

What do you think?

 

[VirtualLarry]

PSU would have been one of the first things to try a swap with, not the last thing. Esp. after lightning damage.

 

[DrOnline]

Well yeah, I can see that NOW, but remember, the comp was fine for about a MONTH after the event. Then suddenly it refused to load windows.

The thing is, can PSU's be damaged but NOT destroyed? Can a PSU be damaged in such a way that it kinda works, but not as well as before?

Do you think it's the PSU?

PS: The new i5 motherboard has onboard video ports, and I'm using them now. Seems the PSU is the very last source of issues..

 

[Charlie98]

An electrical surge can damage the components in a PSU, not necessarily cause an immediate failure. It looks like something finally gave out... I would guess a cap or regulator.

 

[DrOnline]

yeah I mean I suspect it's the PSU as well. it must be. I have two monitors and I tried both (to rule out the insane scenario of a monitor break down)

It's bizarre though, because the PSU runs both the CPU and video card fan, it starts up, but then gives in.

Capacitor sounds plausible, I'm not familiar with how a broken PSU behaves. I thought it was a binary condition, either it works fine or it won't run at all.

Gonna try and borrow a PSU from a friend to test the water.

Already bought.. eh..
2 motherboards
i5-2500k
8GB ram
Custom cooler (broke the stock i7 one when tried to reinstall)

What a clusterf

 

[diaa aaaaaa]

hi can any one help me

i have power tx-750w he is not mod

my power is mod just 1 seconde

after he is dead

iam engener and i need help from any one how now haw can

help me

and iam very very thanke foy it

 

[VirtualLarry]

hi can any one help me

i have power tx-750w he is not mod

my power is mod just 1 seconde

after he is dead

iam engener and i need help from any one how now haw can

help me

and iam very very thanke foy it

You're an engineer? With such poor communications skills? Somehow, I doubt that.
Have you trying jump-starting the PSU, without it connected to anything? (Jump green wire to a black wire, and hold, to power-on the PSU.)

Edit: Sorry, I apologize, Harvey informed me that english isn't your first language.

 

[Harvey]

hi can any one help me

i have power tx-750w he is not mod

my power is mod just 1 seconde

after he is dead

iam engener and i need help from any one how now haw can

help me

and iam very very thanke foy it

You're an engineer? With such poor communications skills? Somehow, I doubt that.
Have you trying jump-starting the PSU, without it connected to anything? (Jump green wire to a black wire, and hold, to power-on the PSU.)

He's posting from Russia, and he's not spamming so cut him some slack regarding his English skills.

diaa aaaaaa -- We may be able to help if you can get a better translation of your post and try again.

 

[Stayfr0sty]

PSU would have been one of the first things to try a swap with, not the last thing. Esp. after lightning damage.

What he said.
That would be obviously the first troubleshooting step.

 

[diaa aaaaaa]

First, thank you for reply
Secondly, I work in the maintenance of electronic devices
Now I have power adapters for PC
These adapters are high-capacity and 500 watts Say
The problem that I faced in these transducers
When what do I connect the adapter with the computer and work run
Converter is running for less than a scratch seconds
Fan operates for less than two seconds and stands on the spot
And there is no volt on the way out

 

[diaa aaaaaa]

I need help from you or from person with experience in the field of maintenance
What are the major parts responsible for the voltage
But when you disconnect the power supply from the computer
And do I turn it on after the wire reached the green with residential works perfectly
Or if the lines were cut and the line 3.3 v 5 v
And connect the power supply to the computer works perfectly
And when you connect any line of the two lines 3.3 v or 5v
Stops working

 

[diaa aaaaaa]

hi virtuailarry

thanke you reply are you read my to maseeg

 

[VirtualLarry]

Can someone post that helpful diagram of the ATX 24-pin mobo connector, with the pins shaded that you have to connect them to jump-start it? I've seen it posted before in this forum. (I don't have a copy of it.)

Normally, you just short the green wire to any black wire, to turn on the power-supply without anything connected to it.

If it refuses to turn on and stay on, it is likely to be defective.

 

[diaa aaaaaa]

This is true I have that step, but it did not work

 

[diaa aaaaaa]

I need help

Because I have in the maintenance department of more than 300 power

 

[Yellowbeard]

Normally, you just short the green wire to any black wire, to turn on the power-supply without anything connected to it.

In most cases with modern PSUs, it is best to have some sort of load connected to the PSU such as a couple of fans, and old HDD, etc.

LINK TO ATX 24 PIN PLUG DIAGRAM

 

[diaa aaaaaa]

thanke you yellow beard

I will work a video file

Explain to you where the problem

I hope to have the solution you

 

[SparkyJJO]

I have a few old IDE hard drives I use for a temporary load for PSU testing.

 

[Harvey]

Have you tried e-mailing Corsair's tech support to ask for documentation for your supplies such as schematics, a service manual or any other suggestions they may have to help resolve tiyr problems?