I'm having exactly the same issue. The sounds gets really low (but the volume setting is unchanged), and I have to go above 15 to reset it at lower levels. It's concerning that replacing the motherboard didn't help, but I sort of always assumed this was a software issue.
Random volume decrease
in LG webOS Smart TV Questions
Posted
Hey!
I'm having exactly the same issue. The sounds gets really low (but the volume setting is unchanged), and I have to go above 15 to reset it at lower levels. It's concerning that replacing the motherboard didn't help, but I sort of always assumed this was a software issue.