SamyGO

Hi
I have an old ( non smart ) tv that started behaving strangely :
- at start it shows "Please go into service mode and setup below options. - Type ,local set ,front color option"
- it works good but with no sound , increasing or decreasing volume shows headphone logo , even tv has no headphone jack
Self diagnosis shows headphone to be on

I managed to get into service mode but couldn't know what to do
Options menu : As you can see I can change type , tuner and front color , other options are grayed

I tried to match tv code with options with no luck :
I have no idea if setting the options can fix the issue , or do I need a new firmware ( tv repairmain said firmware is broken)
Please any help / lead , thanks