How do I manually test my power supply?

How to: Test a power supply unit

1. Shut off your PSU.
2. Unplug all cables from the PSU except for the main AC cable and the 24-pin cable.
3. Locate pin 4 and pin 5 on your 24-pin cable.
4. Bend your paper clip so the ends can be inserted into pin 4 and pin 5.
5. Turn on the PSU.
6. See if the PSU fan turns.

What is 5VSB on a power supply?

A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer. While an ATX power supply is connected to the mains supply, it always provides a 5-volt standby (5VSB) power so that the standby functions on the computer and certain peripherals are powered.

How do I test my power supply output?

Test the power supply with a power supply testing unit.

1. Connect the power supply testing unit to the 20/24 pin connector.
2. Plug the power supply back into the outlet and turn it on.
3. Check the voltages.
4. Ensure that the voltages are within normal accepted tolerances.
5. Test the other connectors.

What does + 5VSB mean on a power supply?

So, in any case, I ordered a power supply tester from Hong Kong and tested the power supply. With the 24-pin and 6-pin connector cables connected, it simply reads +5VSB. This, by my understanding is the standby power voltage. The HDD, SATA and other connectors don’t register anything.

What does a power supply tester tell you?

When you first fire up the PSU the tester should greet you with a quick beep which means that everything is ok. If you don’t hear a beep, then something did not check out right. The LED row along the right show results for +3.3V, -12V, PG (Power Good meaning that overall the PSU test was good), +5VSB, +12V, -5V, & +5V.

Where is the Molex connector on a power supply tester?

The Molex Connector (located along the bottom edge of the tester) should give results similar to the Floppy connector. A lit up +12V and +5V LED.

Where is the SATA connector on a power supply tester?

Using the middle connector group along the left side of the testers to test the 6Pin PCI-E (video card) power connectors will give you a +12V2 rating on the LCD tester and a lit up +12V LED on the left side of the standard tester. The SATA power connector is located along the top edge of both testers.