If you do not have an HDMI monitor connected to your Pi-Star, This command will turn Off HDMI. If you turn Off HDMI, the Raspberry pi will draw less current and therefore will run cooler.
Enter the SSH from the Config – Expert page
Simply type the following command at the Linux prompt and press enter to turn Off HDMI.
If you need to turn HDMI back on, then simply type the following command at the Linux prompt and press Enter. The following command will turn On HDMI.
After the command prompt returns you can type exit to leave the SSH session.
Courtesy of EA7KDO