I have purchased this LG Sound bat model NB2022A and hooked it up to my Vizio Smart TV model E600i-B3 and is has a delay so it echoes. The only way to plug this in to the TV is through a digital audio out. It is literally the only way to plug it in there is no other plugs in my sound bar. Whatever button I push on the sound bar remote doesn't bring up a menu or anything, should it? How do I fix this lag o that it syncs up? Thanks in advance!