During operation of your computer, if a short circuit occurs at your household, the fuse inside the PSU box will protect the actual physical hardware components from getting damaged. If you notice that your PC fails to power on, you have checked the cabling, it is most likely the fuse needs replacing. Inside the actual fuse is a small wire. If too much current flows through it, it will immediately snap and will break the circuit. Replacing the fuse is a straightforward process and will take no more than 5 minutes of your time. Remember to replace the blown out fuse with a fuse of the same amps. Using a fuse that is rated at higher amps will make the PSU operational. However it won't protect the power supply unit in the future from overload and will transform it into a expensive paper weight if things go pear shaped.
1) Leave your computer powered off for at least 1 hour. This will allow enough time for the capacitors to discharge. Therefore making it safer to work with and perform the repair at home.
2) Remove the four screws that are located at the back of your PC tower. Screws will be placed in each corner at the back of the PSU.
3) Now disconnect all of the cables and plugs. Then remove the PSU from the case.
4) The PSU will have a removable metal case covering up the internal electrical components. It will have four small screws on each corner at the bottom. Get a screwdriver and remove them all.
5) Slide off the metal cover. You will see a glass fuse placed inside a metal holder mounted onto the circuit board. Get a flat head screwdriver and pry it out.
6) Line up your replacement fuse with the fuse holder clips and push it down locking it into place.
7) Follow the instructions in reverse order to reassemble the power supply unit back together.
0 comments: