I recently tried to run RCA cables from the 3.5mm speaker jack on my PC with a 3.5mm to RCA converter cable(6") to my HDTV however when I hook it up through the "HDMI port 1" audio inputs I don't receive any sound on the television, what can I do to fix this problem? The television is an Emerson LC401EM2f 40" LCD HDTV