[SOLVED] Capacitor Failure on Motherboard or PSU

[ringra22]

Tried to power up my Precision T7600 Recently.
A loud pop/bang and the computer was dead. No response from the machine at all on further attempts to power up.

If there is no response at all does that mean it's the PSU that needs to be replaced?

Online research and in describing the event to a friend seems to point towards capacitor issues, either in the PSU or on the Motherboard.

Opening up the box I can't see any issues with either visually:
No capacitor tops popped, I didn't see any smoke or scorching or oozing anywhere. Unless the white Caulking type substance is the oozing in the PSU?
https://imgur.com/a/5qdhZWC

The only thing I could slightly imagine is this capacitor on the motherboard which is tilted slightly out of the perpendicular.
https://imgur.com/jw5ZXxP

I can't replace both right now so I'm hoping to discover what the issue is and, if there is a reason it failed. (Like maybe I don't have a high enough power supply? I read capacitors can fail for being "underpowered"?)

Thanks for taking a look at this issue. Much appreciated!

 

[anotherdrew]

There is nothing obvious in your pictures. The sound you describe could also have been arcing. Did you smell ozone (it kinda burns the nose)?

Voltages are much higher in the power supply than in the motherboard, so it would my first guess as to what failed. My concern about the power supply is it does not look like a standard size and that could make replacement difficult.

 

[RememberThe5th]

Pop only can occur to the PSU , for rest of PC components thats usually burnt component/highly visible red melting component, which happened to me once.
I would see first if you have spare psu to swap itand test it, psu will automatically turn itself off it there is an short (if its not garbage psu).

Just disconnect HDD if you have anything important onto it to prevent further damage.

 

[ringra22]

There is nothing obvious in your pictures. The sound you describe could also have been arcing. Did you smell ozone (it kinda burns the nose)?

Voltages are much higher in the power supply than in the motherboard, so it would my first guess as to what failed. My concern about the power supply is it does not look like a standard size and that could make replacement difficult.

I didn't smell anything at all which I thought was weird, my dog was sniffing the box intensely but they could have also just been interested in the sound. so maybe there was and I just didn't get any?

 

[Satan-IR]

Tried to power up my Precision T7600 Recently.
A loud pop/bang and the computer was dead. No response from the machine at all on further attempts to power up.

If there is no response at all does that mean it's the PSU that needs to be replaced?

Online research and in describing the event to a friend seems to point towards capacitor issues, either in the PSU or on the Motherboard.

Opening up the box I can't see any issues with either visually:
No capacitor tops popped, I didn't see any smoke or scorching or oozing anywhere. Unless the white Caulking type substance is the oozing in the PSU?
https://imgur.com/a/5qdhZWC

The only thing I could slightly imagine is this capacitor on the motherboard which is tilted slightly out of the perpendicular.
https://imgur.com/jw5ZXxP

I can't replace both right now so I'm hoping to discover what the issue is and, if there is a reason it failed. (Like maybe I don't have a high enough power supply? I read capacitors can fail for being "underpowered"?)

Thanks for taking a look at this issue. Much appreciated!

In the second picture beyond the 24-pin ATX connector cables there seem to be five Nippon Chemi-Con capacitors in a row and the first one on the right looks to be missing the top and internals.

If that's the case that might explain the loud pop and dead motherboard/system.

Maybe if take a closer look and a picture with the camera aimed at that part we can make sure.

 

[ringra22]

Tried to power up my Precision T7600 Recently.
A loud pop/bang and the computer was dead. No response from the machine at all on further attempts to power up.

If there is no response at all does that mean it's the PSU that needs to be replaced?

Online research and in describing the event to a friend seems to point towards capacitor issues, either in the PSU or on the Motherboard.

Opening up the box I can't see any issues with either visually:
No capacitor tops popped, I didn't see any smoke or scorching or oozing anywhere. Unless the white Caulking type substance is the oozing in the PSU?
https://imgur.com/a/5qdhZWC

The only thing I could slightly imagine is this capacitor on the motherboard which is tilted slightly out of the perpendicular.
https://imgur.com/jw5ZXxP

I can't replace both right now so I'm hoping to discover what the issue is and, if there is a reason it failed. (Like maybe I don't have a high enough power supply? I read capacitors can fail for being "underpowered"?)

Thanks for taking a look at this issue. Much appreciated!

In the second picture beyond the 24-pin ATX connector cables there seem to be five Nippon Chemi-Con capacitors in a row and the first one on the right looks to be missing the top and internals.

If that's the case that might explain the loud pop and dead motherboard/system.

Maybe if take a closer look and a picture with the camera aimed at that part we can make sure.

Ah good thought Satan-IR. Apparently it was just a trick of the light. Really did look that way in the photo though.
Here's another photo of those > https://imgur.com/o1FTZTj
All seem to be intact.

Logically It seems to me that the PSU would be the culprit here since there is no power at all? If it was an issue with the motherboard would there still be no response when attempting to switch on the machine?

 

[Satan-IR]

Yes they seem to be OK. All Capacitors in the PSU seem to be in order too.

Maybe you can detach and reseat all power connectors with the PSU unpluged from AC mains. If possible maybe test the system with another PSU?

And since you've opened the PSU cover be very careful as not to touch anything as some of those capacitors (especially the main ones) can retain a large charge for some time and they can be very dangerous.

Yeah sometimes there's a problem but when you switch on the fans rotate or LEDs light if present and so on.

Does the PSU fan work when connected to the motherboard and switched on?