[JavaBrewer]

I had the same issue with my Tab 4 when I set the screen brightness to max. I resolved this by restarting in safe mode and changing the screen settings.

Safe Mode

1. Turn the device off.
2. Press and hold the Power key.
3. When Samsung appears on the screen, release the Power key.
4. Immediately after releasing the Power key, press and hold the Volume down key.
5. Continue to hold the Volume down key until the device finishes restarting.
6 Release the Volume down key when you see Safe Mode on the device.
7. Uninstall apps that are causing a problem.