With new batteries in the remotes, first get the volume working in av device before attempting to punch it through to another device. So punch-through volume from and to the av device. Now erase the learning attempts from the volume keys. Using the preset code only, does the volume work?
I'm thinking the volume keys have lost conductivity, and no longer works at all. Does the volume keys work for the tv in the tv device?
Last edited by edmund on November 2, 2018 17:17.