The quick answer is no.
The power supply unit in your computer is the square metal box normally found in the top rear of the computer case and is easily identifiable by the cooling fan and power cord receptacle within the box. A power supply is the component that supplies power to the computer. It converts the high voltage alternating current (AC) electric power supply to a usable low direct current (DC) power for the internal parts of the computer.
One of the main problems that a computer faces is the power supply. The power supply heats the computer and the components within it every time the computer is turned on. The overheated components can create a power supply failure and can be indicated by a stalled cooling fan located in the power supply. The burning smell normally noticed before the computer shuts down is usually due to failure of the power supply unit. Other symptoms of failure are random rebooting of the computer which causes stoppages in the operating system. It may also be possible that the computer will not start at all.
If you want to test the computer’s power supply, then follow the instructions below.
WARNING!! DO NOT take the power supply apart or try to repair it. Trying to repair a power supply could get you electrocuted due to the high voltage that is present in a capacitor inside the unit.
Obtain a tester from an electronic supply store.
Carefully remove all the cables from the power supply unit and unscrew it from the computer case. Care must be taken not to damage any cables or the component they are attached to.
Plug in the tester to the cords of the power supply as per the instructions supplied for the tester. They vary to some degree.
Connect the electrical cord to the unit and be sure the power is on. You may need to flip the switch in back of the unit if it has one.
This should tell you if it is good or bad. If the supply is bad replace it. DO NOT take it apart. Dispose of it according to you local ordinances.
If the unit is good you need to find out what else may be wrong. This is where you may need an expert if you don’t know what to do next. There could be numerous reasons in this case.
One other thing you can do, and is recommended, is to replace the power supply with one you know is good.This is the best fastest way to do it.
Although it is possible to check the power supply at home or in the lab, it is not logical to repair it. The cost would be too high even if you were to repair it. Replacing the supply is the only thing that makes sense if it is bad.



