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Windows 7: Changing Capacitors on a bad PSU, Will it make a difference?

14 Dec 2014   #11
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot

I definitely agree on buying a new supply.

Replacing the caps in a PSU with high quality grade caps could easily cost you half the cost of buying a new quality supply. It wouldn't be worth it, and there's always a fire risk when messing with the internals of a PSU. Better to leave it alone, and buy a new supply.
My System SpecsSystem Spec
14 Dec 2014   #12

Windows 7 Ultimate 64-bit, Windows 8.1 64-bit, Mac OS X 10.10, Linux Mint 17, Windows 10 Pro TP

I've replaced a few power supplies that had bulged and/or leaking capacitors, even one that had blown the 2 large capacitors in it, plus more than a dozen computers with the same problem on the motherboard. Best I could find out was a manufacturing plant in Asia had a mechanical issue with making them and the problem extended to most brand computers and some of the motherboard boards such as my Gigabyte and FIC, all were running WinXP. The symptom was sudden unexplained freezes or shutdowns. It's the first thing I look for on older computers when folks have problems.
My System SpecsSystem Spec
14 Dec 2014   #13

Windows 7 Professional 64bit SP1

Quite a few years ago, the high-quality Japanese capacitors were being copied by a company in China. It was rumored that Japanese manufacturers knew about them trying to steal their technology and "leaked" bad designs of their capacitors and they produced billions of them which failed in a couple years of use.
My System SpecsSystem Spec

14 Dec 2014   #14
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

1. No one knows what capacitors are going to be used for the replacement.
2. No one know if they are soldered correctly.
3. No one know the quality or end of life of the rest of the components in the power supply.

Their are to many no one knows to be doing such a thing.

Just buy a quality, higher wattage and amp power supply and be done with all this.
My System SpecsSystem Spec
14 Dec 2014   #15

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate 64

Never ever cheap out on your PSU. Repairing a marginal low cost PSU with anything is still a risk and for what they charge for labor you could buy so much more quality on sale somewhere and have a warranty. Even if you have to save up then get a new quality 80% PSU and look to 500w minimum and go semi modular to save cost and buy up the difference into a higher rating say gold. silver and or platinum ! Don't look back........
My System SpecsSystem Spec
14 Dec 2014   #16

Windows 7 Professional 64bit SP1

I've used several of these PSU's in builds, and I use them at just can't hardly beat them. Normally, they are around $60-65.....worth every penny! SeaSonic M12II 520 Bronze . For what they normally go for, there's no reason to have to have a PSU rebuilt outside of it's warranty.
My System SpecsSystem Spec
15 Dec 2014   #17

Windows 7 Pro 64 bit

A cheap PSU is a poor way to economize. A big problem is that cheap PSUs don't like to die alone but often take other major system components with them. A cheap PSU in the long term can be very expensive. But unfortunately many OEMs and system builders have found that using cheap PSUs is a cost effective way to build low cost (although unreliable) computers. But the computer usually lasts the warranty so it isn't their problem. It is the unfortunate buyers.

It is certainly possible for a skilled technician using quality components to make a reliable repair. But skilled technicians know their worth and usually don't work cheap. You are unlikely to save much on a repair over a new quality PSU. A reputable technician would so advise you. And this all assumes that the PSU doesn't have other problems. And in a cheap PSU that is far from certain.

Of course there are individuals that will do an inexpensive job. But you take a serious risk that they do not have the necessary skills and may do a rush job. And they will probably be using cheap capacitors of lower quality than the originals.

Of course you may get a reliable repair at a good price. But the odds are against you.

There is little to gain in having a PSU repaired and much to loose. Better to purchase a good quality PSU.
My System SpecsSystem Spec
15 Dec 2014   #18

Windows 7 Home Premium 64-BIT

So okay everyone thanks for the advice! :) Just curious if this would help.
My System SpecsSystem Spec

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