Chosen Solution
I already replaced the power supply. I already tried blowing the dust off. I tried plugging the cable directly into the wall. The controller still works, I tried connecting the controller to the ps4 to turn the ps4 on but nothing.
I too replaced my psu and even my power cable yet it didn’t work. How I fixed it was removing all the screws on the top part and even the two long torx security screws holding down the metal plate, and then I connected the power cable and instead of pressing the power button I pressed the eject button. It’s gonna beep and just when it beeps hit the power button and it should boot right away.
