I own a handful (8 or so) of these boxes and have had success programming them for each of the TVs that they are attached to, except for one, an old Dynex plasma. The TV is around 15 years old, obviously a pretty off-brand.
When attempting to program, it only provides one option to test for both power and volume, after which both fail and I am left with a message indicating that cannot program the remote to this television.
Any suggestions how to get around this so I can turn the TV on and off with this great, cheap remote?
That brand may have been made by either Samsung or lg, but branded as dynex.
Lg made the insignia branded plasma for year or two.
Try those brand codes