1) Turn PS4 off completely

Touch the power button on the front of the PS4 for at least 7 seconds (until the system beeps twice).

2) Disconnect PS4 AC power cord from electrical outlet

Only disconnect the plug of the AC power cord from the electrical outlet when the power indicator is turned off. If you disconnect it while the power indicator is lit or blinking, data might be lost or corrupted, and the system might be damaged.

3) Check the AC IN connector, the AC power cord and the electical cord leading to a power outlet for any damage.