WHERE IS THE FUSE INSIDE MY COMPUTERS PSU?

A WIRE TOUCHED A ALUMINUM HEATSINK INSIDE MY PSU AND NOW IT WONT POWER ON

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lemonie5 years ago
Why do you think it's "The fuse" that you broke?

L
REALONE414 (author)  lemonie5 years ago
I dont know a alum. heatsink with a mosfet transformer on it has a nice electric burn on it and it fried something.
Yes well that is probably what is broken, and it doesn't sound like a fuse.

L
Burf5 years ago
Depending on the brand and model of it could be just about anywhere on the circuit board or connected to it. You'll need to locate it. Generally, the fuses look like an automotive style Buss fuse but probably made of either black or white ceramic.
It will likely be soldered in place. Test the fuse before attempting to remove it, its possible that other component(s) are damaged and the PSU may not be worth attempting a repair.
REALONE414 (author)  Burf5 years ago
thank you so much. it was a fuse but it was covered in heatshrink tubing and i already took it apart before i found that out. I am recovering the precious metals in the computers and was using the psu for a few things. i used the lasers from the dvd burner to make a laser pistol. the hdd for a grinder and lots of other pieces that are in a computer that are hard to find anywhere else seperate. thanks alot
Re-design5 years ago
It may be covered in heat shrink tubing. I replaced one last week that was hidden AND covered in tubing. But the power supply worked when it was replaced. Maybe yours will also.
REALONE414 (author)  Re-design5 years ago
thank you so much. you were right it was covered in heat shrink tubing and was not a regular fuse. thanks alot.
nurdee15 years ago
Its usually right on the main board but usually if it is blown there is more wrong then a blown fuse.

Good Luck
canucksgirl5 years ago
Here's a good article that should help you...
Please ensure that you read the repeated warnings!!! Get someone QUALIFIED to help you if you don't know what you are doing. ;)

http://www.techrepublic.com/article/learn-to-re-fuse-a-power-supply/1053277
+1 This is the answer that actually tells you where the fuse is.
Vyger5 years ago
Some of the really cheap ones don't have fuse's.
Most PSUs now days don't use the basic glass tube with filament fuses. They use a self resetting poly fuse cause the PSUs are not meant to be opened and repaired. If you find a PSU that still uses a basic fuse then its either an older PSU or the manufacturer is using an older and outdated PSU design. So it would be best to replace the PSU so you don't run into problems down the road.

Besides if a wire inside the PSU came loose and touched something on the inside of the PSU its time to get rid of it. No wire should be able to come loose like that.
iceng5 years ago
Did you try Totally Unplugging the computer ( all cords and lines ) for 25 sec.

There are self reset poly fuses but you need to disconnect the power for
that to work..

A
+1

If the PSU actually uses a fuse and not a self reseting poly fuse then it would be best to replace the PSU. Not many modern PSUs still use a basic fuse and those that do have cut corners on there design or are continuing to use an outdated PSU design. Its safer for your PC if you replace such a PSU.