Technical Support News

Computer troubleshooting: the power supply

Without power supply a computer cannot function. One of the most important components of a computer, as it gives life, so to speak. However, a failure of the PSU (Power Supply Unit) can bring with it a plethora of uncertainties as the usual computer troubleshooting method is immediately nullified by the fact you can no longer turn the PC on.

The main cause for concern with a recently deceased PSU is that in their dying throes they can take other components with them. So, how does one go about diagnosing a computer without a power supply? Here are the steps to begin the process:

1) Have a replacement PSU.

While almost all users do not possess a second PSU, those who do can begin diagnosing immediately via replacement. However, if this is not the case you must proceed to the second step.

2) Find a replacement.

This is where things get tough, for the normal user it will involve taking it to a PC repair shop and have the technicians sort it out. Costs more money in the long run but assures a diagnosis.

The aftermath is having a new PSU in the machine, turning on the power button and hoping something happens, if it does then the PSU was merciful in its last moments. If you chose to diagnose it yourself, then something in inherently wrong which in and of itself involves the following process:

* Check to see if the connectors are properly hooked up. Everybody makes mistakes; even computer techs are not immune from one of the simplest. Simply checking for securely connected power cables can solve the problem.
* Begin a step-by-step visual analysis of the inside. While this is borderline on something a technician does, and they do, it can be done in an abbreviated fashion by the layman, the first thing to notice if there is any smell similar to burning plastic. If there is, immediately take it to a computer repair shop. If not, check the motherboard for any discoloration; check the hard drive for any black discoloration as well.
* Take it to a repair shop. If you cannot diagnose it from looking at it or checking connectors, then simply take it to a professional.

Source: Examiner