Just a note = RSQ didn't make that player. It is OEM from other manufacture. That manufacture is what codes they are using for the remote.

If you haven't already tried, go thru the codes from other manufacture. Start with Pioneer codes, they were used by several Karaoke branded players.
Also try Awia, Akai, Audiovox, etc.. I would be surprised if at least 1 of the code sets in your universal remote didn't work at least some of the functions of that unit. May take some time to go thru all the codes.