i got an older mitsubishi 55 inch DLP tv with no HDMI port in the back. i want to connect it to the direct tv wireless genie cable box. i bought a hdmi wire with 5 components and tried that. It did not work. I plugged the HDMI port into the wireless genie and the other 5 components into the back of the tv.......does anyone know what I need to do to connect it?