How Do You Troubleshoot An ATX Switching Power Supply?
The failure of an ATX power supply is asymptomatic in many cases and may even appear as failures in unrelated hardware such as a graphics card or hard drive. There is one troubleshooting test available to the home consumer which may be used to ascertain the operability of an ATX switching power supply. This test requires no electrical knowledge and is easily performed. Unfold your paperclip into the shape of a “U.” Unplug the computer from any electrical sources and remove its side access panel. This may require the removal of two thumbscrews on the rear face of the computer’s case. Locate the main ATX power connection to the motherboard. This will be a 20- or 24-pin connector that connects to the right side of the motherboard. This connection is also the largest connection from the power supply to the motherboard. Orient the power connector in a manner that allows you to see the individual connective points that plug into the motherboard. Locate the connective point that is connected
