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uniqs
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nonymous (banned)
join:2003-09-08
Glendale, AZ

nonymous (banned)

Member

Does a power supply failure affect a MB?

Ok replaced a failed power supply in an older Dell. Now seems to work fine. But did a power supply failure now setup the rest of the hardware to fail sooner rather than later? I mean would a power supply failing be soft and not do damage or be hard and do damage even if not immediate? Or unknown and tend to one either soft or hard.

JimE
Premium Member
join:2003-06-11
Belleville, IL

JimE

Premium Member

A power supply can affect everything inside the computer.

Having said that, they either cause damage upon failure or they don't. Anything currently working is no more or less likely to failure now that the power supply was replaced.

aurgathor
join:2002-12-01
Lynnwood, WA

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It really depends on how the power supply had failed. There were a few bad ones that sometimes could take out everything when they failed, but that doesn't appear to be the case here.
bbear2
Premium Member
join:2003-10-06
dot.earth

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said by nonymous:

Ok replaced a failed power supply in an older Dell. Now seems to work fine. But did a power supply failure now setup the rest of the hardware to fail sooner rather than later?...

It's difficult to say, but since everything is back up and running, my guess would be mostly likely not. If a bad PSU were to take out components, you would have noticed it. Now that doesn't preclude things you might not be using at the moment like extra SATA ports, USB ports, etc. unlikely but not impossible for those unused ports to have gotten burned.
fartness (banned)
Donald Trump 2016
join:2003-03-25
Look Outside

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I have had psus fry motherboards and some pci cards but left all other cards and accessories without any damage.
nonymous (banned)
join:2003-09-08
Glendale, AZ

nonymous (banned)

Member

Still seems ok. Just hoping can last a bit longer if not whatever length or time it would have without the failure.
Didn't see any burn traces or smell magic smoke.
Did another new data backup just in case.

Krisnatharok
PC Builder, Gamer
Premium Member
join:2009-02-11
Earth Orbit

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I have seen a garbage Kingwin PSU take out a mobo, ram, and HDD.

I have seen a high-end NZXT (Gold-rated, 1000w) destroy a CPU, mobo, ram, CPU cooler, and case fan supply.

Veloslave
Geek For God
Premium Member
join:2003-07-11
Martinez, CA

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Seen a lot of old P4 E-machines and XPS Dells that when the PS went... mobo was toast too. (Who knows... could have been the other way around but does it really matter?)

DarkLogix
Texan and Proud
Premium Member
join:2008-10-23
Baytown, TX

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Depends on how it failed, it could have sent unstable power to the MB but that might have been seen as random issues not a flat out dead PS at first.
32207098 (banned)
join:2013-12-19
Anaheim, CA

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Most motherboard have in-built spike/surge protectors. If your system's motherboard has one, then you do not need to worry. If it does not have an in-built spike protector, then it totally depends on the type of failure and risk factor concerned. The failure could have occurred due to some fault in the PSU, and it stopped powering the motherboard all-together. If you are still working on the same system, but can feel some performance lags, smoke, smell then the motherboard is probably affected.

aurgathor
join:2002-12-01
Lynnwood, WA

aurgathor

Member

said by 32207098:

Most motherboard have in-built spike/surge protectors. If your system's motherboard has one, then you do not need to worry.

Non-sense. If PS fails with an overvoltage condition (i.e. 24V out on a 12V line) no amount of onboard surge protection will protect the mobo.

Veloslave
Geek For God
Premium Member
join:2003-07-11
Martinez, CA

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said by 32207098:

Most motherboard have in-built spike/surge protectors. If your system's motherboard has one, then you do not need to worry. If it does not have an in-built spike protector, then it totally depends on the type of failure and risk factor concerned. The failure could have occurred due to some fault in the PSU, and it stopped powering the motherboard all-together. If you are still working on the same system, but can feel some performance lags, smoke, smell then the motherboard is probably affected.

Is that what they teach at Geek Squad U ?

a2nxtcrav3r
Pokes People With Stick
Premium Member
join:2003-07-13
San Jose, CA

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have had one PSU almost fail. a few of the capacitors or something in it kept making it hiss, ping and high pitch noise. it overvolted the CPU making 60C idle, after change it out temps were back around 30C idle. would never want total failure to happen.