![]() Repeat the process for each of the peripheral connectors.If any of the voltages are outside of the tolerance range, then the power supply is defective. Check the voltages to make sure they fall within the tolerance threshold.Connect the positive probe to the first pin that you want to test.Connect the negative probe of the multimeter to a ground (black) pin on the connector.If your multimeter does not auto-range, set the range to 10V. ![]() Set your multimeter to the VBDC setting.This will let you know which pins provide which voltages. Find a pinout chart for your power supply.Plug the power supply back in and turn it on.This will trick the connector into thinking it’s plugged into the motherboard. Plug the paperclip into the green pin (pin 15) and into one of the neighboring black pins. Find the green pin on the 20/24 pin connector. ![]() Straighten a paperclip and then bend it into a “U” shape. Unplug and turn off the power supply between each test. Once you’ve verified that the main connector is outputting power properly, test each of the other connector cables one by one. If any of the readings are outside that range, than the power supply is bad and needs to be replaced. Ensure that the voltages are within normal accepted tolerances.The 20/24 pin connector will have multiple readouts, but there are 4 essential measurements you need to look for: Some power supply testers require you to turn on the power supply using a switch or button on the tester.Your power supply should turn on automatically and your power supply tester will light up. Plug the power supply back into the outlet and turn it on. ![]()
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January 2023
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