JVC TH-A75R System "port entry" Questions

...port suddenly is not detecting my sd card. It was fine yesterday, now I couldn't play my mp3 files in the sd card. I've reformatted my sd card and the player still won't detect it. The sd card works ...

...or apple tv, but when I plug it into the JVC it does NOT light up. I noticed that the "port" for the optical cable is enlighted on all devices in red as well, but on the JVC I ...