I think I must be missing something obvious here. My system with an mc 700 and oppo 105 was working fine until I had to disassemble to allow for a home repair. Now I can’t get Audio and video over hdmi from the oppo to the mc700. The cable box works fine on the mc700 on hdmi input 6. The oppo works fine direct to my tv via hdmi. but I cant get any av between oppo and mc 700 on ports 2 4 or 5.ive also tried three different hdmi cords and oppos hdmi setting is set to split screen.