Hello,
I am recently trying to power my RPI 4 with a buck converter, going from 24v to 5.1v.
When i plug the power supply from RPI there is no sound and every LEDs are flashing correctly.
When i use my USB C cable from my buck converter to the PI there is a little sizzle noise comming from the USB C port. All LEDs are also flashing correctly
https://i.imgur.com/8m5yV08.png