SamyGO

I have multiple devices hooked up to this TV. When I am using one HDMI input and use optical audio out, let us say the optical output level is 100%. When I am using TV or apps like Netflix, Hulu, or TV, the optical output level is lower at 60%. Not sure what causes the drop. I have to adjust the volume on HT system to bring it up to the sound level I want. As I am hard of hearing, if the optical output level is low, I am kind of screwed, when it is high, I can always turn down the HT system.

I know ho to get into the service menu for this set using Menu/1/8/2/Power command. Once there, is there place I can set the Optical Output Level?

Thanks in advance for your help.