How To Check Pc Power Supply Jun 2026

Set multimeter to .

This test "tricks" the PSU into turning on without being connected to a motherboard. It confirms if the unit is completely dead or at least capable of powering on. Methods for Testing Your PC Power Supply - GAMEMAX how to check pc power supply

: Burning odors, electrical buzzing, or crackling sounds. Set multimeter to

If the PSU fails any test, replace it immediately. Do not attempt to repair it. A failing PSU can destroy the motherboard, CPU, and graphics card. When replacing, choose a unit with an "80 Plus" certification and sufficient wattage for the system components. Methods for Testing Your PC Power Supply -

Most PSUs have a sticker on the side or back listing the brand, model, total wattage (e.g., 650W), and efficiency rating (e.g., 80 Plus Gold).

Before testing, you may need to know your PSU’s specifications.

Touch black probe to and red probe to: