OK...here are a few options to try with the PS4. Please note that Option 3 will erase all data.
Option 1
1. Remove the HDMI cable from the TV
2. Remove the power cord from the back of the PS4 and then from the wall outlet
3. Wait 2 minutes
4. Plug the power cord back into the PS4
5. Connect the HDMI cable
6. Plug the PS4 into the wall outlet
Option 2
Try another HDMI cable
Option 3
1. Follow the steps in the link
https://www.hardreset.info/devices/sony/sony-playstation-4/hardreset/first-method/
If none of the options work I'd say there is a short circuit somewhere in the PS4. Return it if still in the return window or contact a Sony authorized repair center. Let us know what happens. Good Luck!
Cheers!
Together Everyone Achieves More = T.E.A.M.