I was using the HS212F. Oh yes you are right! They removed all the soundbar, i just checked out their site. Maybe they resolve there is issue with all the soundbar. Cause they exchange for me a new one and it still persist. Lolwhich model were you using for the hisense soundbar ? i realized they have removed all the listings for their soundbar from their website.
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Tbh, i feel the support dont seems to understand their products very well or rather havent tested out much on the product.