New remote for the ARRIS DVR does not have codes for LG soundbar. Techs at spectrum can not help. The only codes listed for the soundbar is 700 and that does not work. I had the old silver universal remote prior to yesterday and it worked fine.
Connect soundbar to ARC hdmi port. Problem solved. audio will also follow the tv inputs selected.
Soundbar only has Optical input, no hdmi
Have you tried the auto search method?
Auto Search Method CLIKR-5
Yes, as many people have reported this remote does not have a code for the LG Soundbar.
If it has a HDMI input and your tv an ARC hdmi out port, use that connection instead.