How To Pat Test A Laptop Power Supply. 3 Locate pins 4 and 5 of the 24-pin cable. 2 Disconnect all cables from the power source except the main power cable and the 24-pin cable.
This is because a laptop is operating under 120V DC usually around 20V DC which makes it a Class 3 appliance requiring a visual inspection only. To check the power supply. How do I test a laptop power supply.
This is because a laptop is operating under 120V DC usually around 20V DC which makes it a Class 3 appliance requiring a visual inspection only.
To find pins 4 and 5 count to the left with the clip facing up and the pins facing you. If you have one perhaps the PSU is failing. Most power supply problems usually dont result from internal component failure but rather. Jumping the incorrect pins may result in injury and damages to the PSU.
