How to Fix Computer Power Supply Problem
Computer power supply failures are common since the power supply gets heated
during computer operations and the often plugging and unplugging of power cable . A power
supply problem could also damage the motherboard and the CPU (which are usually
costlier). Some problems in the power supply can be fixed, but it is important
to recognize signs of major power supply unit failure and replace it
before it causes further damage.
How to troubleshoot and fix power
1. When you switch on the computer,
if the CPU LED does not light up and there is no sound of the fans starting,
the mains power supply may not be reaching the power supply unit. Check if the
spike guard sockets are working properly.
Also check if the power
supply cable is loose on computer. If it is loose, fix or plug it properly
2. The power supply may fail to
operate if the motherboard is not connected to the power supply. Check if all
the connectors are plugged in properly.
3. If the computer case
becomes very hot when you switch on the computer, switch it off
immediately. There could be a problem with the earthing or supply voltage. This
problem could damage your CPU (it will get burnt). Try to connect the
computer to the output of a good quality UPS like APC. Get the earthing
checked, because an earthing problem could also damage your hard disk.
4. If your computer is not kept in
an air-conditioned environment and if the case heats up after the computer is
on for some time, you can try to solve the problem yourself. Check if the power
supply fan is functioning properly, by putting your hand behind the power
supply. If there is no air circulation, the fan may not be moving. After
some time, the power supply will have a lot of dust accumulated on it. You can
use a fine paintbrush or a air blower to remove the dust and the fan will usually function
5. If a computer is used for many
hours daily, the electronic components of a power supply may fail. When a
computer hangs or keyboard stops working suddenly or the computer restarts
randomly, these could be a sign of a gradual power supply failure. Since
power supply units are cheap, it is advisable to replace it with a new unit,
preferably of higher rating.
6. A laptop should work without a battery when it is
connected to the mains power supply. If it does not work, either the power
supply cable is loose or there is a problem with the mains adapter.
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