Download Free Diagnosing and fixing motherboard faults.pdf Modern PC motherboards are very modular in their design, and so easily accessible. Anyone with a basic understanding of how they work should be able to diagnose and repair basic motherboard-related faults on a PC. When a PC fails or exhibits intermittent faults, the first resort is often to send for a specialist engineer. Yet there is a lot that PC support staff with the right level of competence and understanding can do to filter out easilyfixed problems, leaving only those that absolutely require the services of a professional repair-shop. Failure of a socketed part is one thing, but replacing a surface mounted component normally demands specialist equipment.

When you’re diagnosing faults, it is important to keep a record ofwhat you have done. If nothing else, this will help a specialist later on if you are not able to fix the system yourself. In addition, it is vital to know what was happening when the problem occurred, particularly with intermittent faults. As long as the PC is still in its case, static safety shouldn’t be a problem, but ideally you should ground yourself with a static strap attached to the wrist and earthed to the workbench (which itself should be earthed). Failure to take the necessary precautions can cause intermittent faults and/or damage components on the motherboard.

Does the PC do anything at all or is it dead? If you have a dead PC, the first thing to check is obviously the power supply. Is the fan running? If it is, is the power connection to the motherboard OK?Most PSUs connect to themotherboard with two connectors, with the black cables meeting in the middle. It’s a good idea to keep a spare power supply handy, as it’s not unusual for them to burn out completely or for the fan to fail. Removing the case from a power supply normally involves removing four small screws to expose the circuit board. There’s nothing on the board that you can fix, but it’s worth looking at the board in order to check for obvious signs of damage such as a blown fuse or some gunge leaking from the large cylindrical capacitors.