Question Help Please Samsung UN55F6300

Oct 27, 2019
Hi Everyone. I need your help please. I accessed the service engineering menu to enable bluetooth so I could use my bluetooth headphones and in doing so i accidentally changed something that affected the HDMI 3 and 4 inputs. Now when something is connected to HDMI 3 it is greyed out and HDMI 4 is highlighted and it says no signal. If I plug the cable into HDMI 4 it is greyed out and HDMI 3 is highlighted and it says there is no signal. I do t know what I changed by accident so I dont know what to go back and change. Can anyone help me please.
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