PS4 controllers not connecting

Hey guys, hopefully someone can shed some light on this problem. I have a PS4 slim that will not connect/stay connected to controllers. I have replaced the Bluetooth and wifi antennae with no success and have reset the console in case it was a software problem. Occasionally the controllers connect but it does not last. I have verified that the problem persists with multiple controllers that connect to other consoles. Does anyone know what chip on the board controls this?