possible to change PSU fan?

drew64

drew64

drew64

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hey.

i currently have a Antec Basiq 500 watt PSU, which im 99% sure is the reason my pc is so low, ive gone through either disconnecting case fans or being highly technical and poking a bit of tissue in to stop the fan, and the only one left is the PSU, which makes a low whirling sound which is pretty loud.

A. is there any way of stopping the fan, just to be sure if that's what's making the noise.

B. if it is, is there any way of either quietening it, or replacing it, and if so, how do i do it safely, as i know PSUs can hold charge for a long while after it's disconnected from the mains. and im sure a soldering iron + new fan will be much cheaper than a new PSU

cheers in advance.
 
drew64 said:
hey.

i currently have a Antec Basiq 500 watt PSU, which im 99% sure is the reason my pc is so low, ive gone through either disconnecting case fans or being highly technical and poking a bit of tissue in to stop the fan, and the only one left is the PSU, which makes a low whirling sound which is pretty loud.

A. is there any way of stopping the fan, just to be sure if that's what's making the noise.

B. if it is, is there any way of either quietening it, or replacing it, and if so, how do i do it safely, as i know PSUs can hold charge for a long while after it's disconnected from the mains. and im sure a soldering iron + new fan will be much cheaper than a new PSU

cheers in advance.
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but your funeral bill will be a lot more than all 3 items

it's not worth poking around in there i'm good with electronics but i still wouldn't open up a psu
 
I've opened a couple of PSU's and I'm still here :) And they still work :)

Just make sure that they are unplugged :P

Most PSU fans use a normal 3-pin connector like those on the motherboard or very similar. Older ones used a 2-pin one.
 
invisible69 said:
I've opened a couple of PSU's and I'm still here :) And they still work :)

Just make sure that they are unplugged :P

Most PSU fans use a normal 3-pin connector like those on the motherboard or very similar. Older ones used a 2-pin one.
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making sure they are unplugged will not make any difference has they still hold massive amounts of charge after they have been switched off i was reading a web site a while back where a psu that had been dormant for nearly 6 months still held enough charge to kill someone
 
You can always try discharging the psu using something like a fan with a resistor across the atx plug.
 
bigjimmyauk said:
making sure they are unplugged will not make any difference has they still hold massive amounts of charge after they have been switched off i was reading a web site a while back where a psu that had been dormant for nearly 6 months still held enough charge to kill someone
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lol, utter ******** :rolleyes:
The electrolytic capacitors in PC switch mode power supplys are no where near big enough to kill a human unless your like 90 with an extremely weak heart and even then it would struggle in most case's.

Just unplug the kettle lead and push the PC's on button, the Cap's are now discharged. Even if you don't discharge them the worst they would do is give you a little kick and wake you up.

/qualified electrician
 
find a big resistor, insulate the living cr*p out of it and manually short out the main capacitor(s) to discharge them quickly.

or would that just kill the psu? (or you?)
 
My 2cents into killing yourself.

I remember a chart on a wall at college showing how many amps do things to the human body, I think it said to stop a human heart you needed about 500millie Amps
 
stulid said:
My 2cents into killing yourself.

I remember a chart on a wall at college showing how many amps do things to the human body, I think it said to stop a human heart you needed about 500millie Amps
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It's actually 50mA (Hence why RCD's are rated at 30mA)
However 50mA @ 40v is NEVER going to kill you!
Volts that shock and Amps that kill, but again there are many other factors that need to be taken into account, like conductivity/resistance of contact area, amount of contact with the ground, path of shock through the body ..etc ..etc.
But most importantly it needs to be prolonged, in most case's when dealing with low voltage such as 240v a short burst that a PSU cap can deliver is NOT ENOUGH to kill a healthy person..... PERIOD.
 
So I was close with a 5 in the number? This chart I saw about 14years ago. Not bad memory huh?
 
Vesta_Man said:
It's actually 50mA (Hence why RCD's are rated at 30mA)
However 50mA @ 40v is NEVER going to kill you!
Volts that shock and Amps that kill, but again there are many other factors that need to be taken into account, like conductivity/resistance of contact area, amount of contact with the ground, path of shock through the body ..etc ..etc.
But most importantly it needs to be prolonged, in most case's when dealing with low voltage such as 240v a short burst that a PSU cap can deliver is NOT ENOUGH to kill a healthy person..... PERIOD.
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so please explain mr electrician why a 9volt battery kills around 4 people per year from sticking their tongue on it.
also please refrain from swearing on the forum.
 
Perhaps, depending on your skills. But since you're asking then probably not. It's a relatively quiet PSU anyway, i doubt it would make that much of a difference. Last i PSU i took apart had a two pin fan. I then ripped the PCB apart to get to the heatsinks that i wanted for a project. I'm still here :p

Although admittedly the Power Supply was 10 years old and hadn't been plugged in for over a year.
 
Last week I had the mains go through me for a few seconds. Felt god damn weird. Didn't die though.


I've a feeling a PSU holds MUCH bigger stuff. If ANY kind of accident could happen, it really isn't worth it. A risk is there. Risk assessment can be done, but why assess a risk when the outcome is fatal.


But if you must, wear a condom or something.
 
all the open psu's ive seen make it look easy to change the fan with no risk unless you have a seizure and roll onto the naked psu
 
A 9volt battery wont kill rofl, A psu would give you a nasty belt. but in most cases as long as you use insulated tools and your carefull, its ok. poking fingers on the end of caps is never a good idea. :D but I doubt it would kill unless you had a weak heart.
 
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