Ps4 CUH-1216A wont enter safe mode or connect controllers

Wondering if anyone has any idea whats going on with my ps4 that I bought of e-Bay. When I try connect a controller (doesnt matter what controller I use) it only charges it and doesnt allow me to pair it (when I press the ps button it doesnt flash white) so I tried booting it into safe mode which failed as when I heard the second beep after turning it off it just turns it back off again. I couldn’t find any videos on how to resolve this situation so I was wondering if anyone knows whats going on.

Have you tried another controller try to change a controller if the problem is still assist check on the mother board GL3520 if am not mistaken

Hey, I’ve tried multiple controllers and cables so its not that. I’ll check the motherboard