This video shows a common problem with Ender 3 V2 Power Supply, and how to fix it.
Affiliate links to the products I used for this project are listed below:
Creality Ender 3 v2
https://amzn.to/3bx7sNK
Better Printer - Voxelab Aquila:
https://amzn.to/2QbF1hw
https://amzn.to/3d7TEeI (alternate link)
Ratcheting Crimper
https://amzn.to/3dPGBzt
Creality Ender 3 Pro
https://amzn.to/2MslCra
Ender 3 Pro Silent Stepper Motherboard
https://amzn.to/3srymxp