Hi SONY007,
Thanks for posting and welcome back the community!
From looking at the account in question, I can see the all levels seem to be good which won't indicate in any box faults.
With regards to the sound, our boxes can emit sound due to the fan built within the Hub, some can sound louder than others as well based on a variety of scenarios, the main one being where the box is located.
Can I ask where the hub is situated and also can the sound be heard from a far distance?
Please let us know.
Thanks,
Kain