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

07 Dec 2014   #1

Windows 7 Home Premium 64-BIT
Changing Capacitors on a bad PSU, Will it make a difference?

Hi guys I'm just curious if this would make a difference. I found a shop that repairs PC power supplies that is just a few blocks from our house. My PSU gives stable voltages(Haven't failed even the load is 240W) but I can't trust it's Caps no more. I'll be replacing the caps of a 250W power supply.

My System SpecsSystem Spec
07 Dec 2014   #2

Windows 7 Home Premium 64 bit

Running a PSU near it's peak rated wattage/capacity is pretty much asking for a meltdown....; a few new capacitors would hardly seem the solution compared to the $40-$50 spent on, say, a new 430-450 watt PSU?
My System SpecsSystem Spec
07 Dec 2014   #3

Windows 7 Home Premium 64-BIT

The power supply doesn't do a meltdown at near or peak wattage and I just want my power supply to last longer
My System SpecsSystem Spec

07 Dec 2014   #4

Windows 7 Home Premium 64 bit

Some PSUs will handle running at max-load spec better than others; all I am saying is that running a PSU rated at 250W (that rating would be when it is new, out of the box, by the way) at constant 240W load will likely shorten whatever service life is left in it. If you disagree, then, by all means, sir... add a few more USB drives to it, all defragging at once, to run it at 260-270 watts load....when it does 'let loose', let us hope there are no voltage spikes to damage anything else, and that only the PSU is lost.
My System SpecsSystem Spec
07 Dec 2014   #5

Windows 7 Pro 64 bit

Why do you believe the capacitors should be replaced? Capacitors in a good quality PSU should last beyond the useful life of the computer. Replace them in a cheap PSU and you still have a cheap and unreliable PSU.

It may be different in the Philippines but where I live it makes no sense to do any kind of repairs on a 250 W PSU.
My System SpecsSystem Spec
09 Dec 2014   #6

Windows 7 Pro x64 Windows 10 Pro x64

Just buy a new PSU :)
My System SpecsSystem Spec
09 Dec 2014   #7

Windows 10 Pro

In my personal experience if you replace capacitors with same frequency and uF of higher grade/quality capacitors they'll work just fine as long as expert solder the capacitor back on the pcb.
My System SpecsSystem Spec
13 Dec 2014   #8

Windows 7 Professional 64bit SP1

I wouldn't trust a PSU that has had components replaced by anyone except the manufacturer. If it's under warranty and it fails, or acts hinky in any way, send it back for repair.....if not, time for a new one. They have dropped in price so drastically, it makes no sense to try to get extra mileage out of a vital component like that when you can get a quality PSU for around $60.
My System SpecsSystem Spec
13 Dec 2014   #9

Windows 10 Pro X64

I think a new PSU is the best choice.
My System SpecsSystem Spec
13 Dec 2014   #10

Windows 7x64 Home Premium SP1

Definitely I'd go for a new PSU.

After a reread it seems you wouldn't be doing the replacement yourself - potentially very dangerous.
Still I'd dump the old one and buy a good new one.
My System SpecsSystem Spec

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

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