Please check the following:
- Make sure the power cord is plugged into the electrical outlet
- Check DTEN light on the bottom panel on the front of the display lights
Steps to reboot your D7 55":
- Press the Power button on the back right side; the bottom button.
- Press the Power switch on the bottom middle section of your unit.
- Please wait for 5 minutes and then turn the Power Switch back on.
- The DTEN light on the bottom panel of the display will light up
- The DTEN board will boot up