What does LL mean in a power supply tester?

LL means that voltage is missing. Are you sure that is -12v or + 12v 2. -12v is in the 24 …

What is 5VSB on a power supply?

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. ATX power supplies are turned on and off by a signal from the motherboard.

What does a PSU tester do?

Some Seasonic Consumer power supplies ship with a simple Power Supply Tester included in the box to help users quickly check whether the power supply is working properly. Before you start testing, connect both the 18-pin and 10-pin connectors of the motherboard cable to the power supply.

Are PSU testers reliable?

Power supply testers can confirm a dead psu, but they can not confirm the proper operation of a psu. Testing with a known good replacement psu seems to be the only way to do it. It can be used the way it was used so far in this thread too.

What does a PC power supply do?

Specifically, a power supply converts the alternating high voltage current (AC) into direct current (DC), and they also regulate the DC output voltage to the fine tolerances required for modern computing components.

How do I test a PC power supply?

To test your PSU:

  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.

How do I check the health of my PC power supply?

Test the power supply with a power supply testing unit. Connect the power supply testing unit to the 20/24 pin connector. Plug the power supply back into the outlet and turn it on. Your power supply should turn on automatically and your power supply tester will light up.

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.

How can I Check my PSU power supply?

Connect the 20-pin/24-pin connector and other connectors (Molex/SATA/PCIe/EPS) to the PSU Tester. Turn On the PSU and the Power Supply Tester (if it has an On/Off button) The voltage readings for different voltage rails and PG (Power Good) values will be shown on the LCD screen of the power supply tester device.

What kind of voltage does a PSU tester show?

For ease of use, the tester has green LED lights to show the various voltages that include +3.3V, -12V, PG, +5VSB, +12V, -5V, +5V. Unplug the computer from the main source that means removing the power cable from the backside of the PSU of the PC.