Pas de son sur ma tv box android H96 Pro+ quand j'utilise ma télécommande MINIX NEO A2 Prière de m'aider merçi. ......
You should find if you disconnect the A2 USB dongle you will have sound again.

Because the A2 has a speaker it overrides the audio. You need to find out if the H96 has a setting that allows to switch the audio from USB.

It is an A2 that you have and not an A2 Lite?