Warning: the following procedures might damage your PSU or connected devices. Do it at your own risk!
Requirements
- A Multimeter.
- A small metal wire like paper clip or a short wire.
- Any single device to plug in into SATA or Molex connectors for adding load to PSU.
Preparation
- Unplug power cord from PSU.
- Use a bare metal paperclip, or a wire, to connect the green pin (PS_ON) shown here to any of the black pins (Ground). Example
- To give a load to PSU, plug any device into molex or sata connector such as fans, Hard Drive, Led strip.
- Plug the power to turn on the PSU.
- Check if PSU fan spin.
- Insert your black probe of the multimeter to any black wire socket of any molex connector.
- Use red probe to start testing all 5 outputs from 24pin connector.
Connector References
Voltage References
Compare your measured values to these to ensure your PSU is within tolerance:
| Output | Tolerance | Minimum | Nominal | Maximum | Color |
|---|---|---|---|---|---|
| +12 V | ±5% | 11.40 V | +12.00 V | 12.60 V | Yellow |
| -12 V | ±10% | -10.80 V | -12.00 V | -13.20 V | Blue |
| +5 V | ±5% | 4.75 V | +5.00 V | 5.25 V | Red/Gray/Purple |
| -5 V | ±5% | 4.75 V | +5.00 V | 5.25 V | White |
| +3.3 V | ±5% | 3.14 V | +3.30 V | 3.47 V | Orange |