hello. I was able to set up and successfully use a sling box 500 and xfinity cable box before going abroad. However, since then, my mother in law changed her router and the cable jack where the sling box had a weak signal and stopped working. The cable has been fixed but the sling nix will not move part startup screen with the upside town horseshoe. My in laws tried holding the reset button for 45 secs and waiting for the lights to blink twice but that didn't work. Aldo tried unplugging it for 30 sec but that also didn't work. Any other ideas? Thanks!