https://us.community.samsung.com/t5/Home-Theater/Q990C-Wi-Fi-not-connecting-to-router-a-day-or-two-after/td-p/2592942
Solved: Q990C Wi-Fi not connecting to router a day or two ... - Samsung Community - 2592942
Jul 6, 2023 - Solved: I added my Q990C sound bar to my smart things app and was able to use it to control the sound bar for a day or two. It worked fine - 2592942
https://us.community.samsung.com/t5/Home-Theater/Q990C-Wi-Fi-not-connecting-to-router-a-day-or-two-after/m-p/2594798
Solved: Re: Q990C Wi-Fi not connecting to router a day or ... - Samsung Community - 2592942
Jul 6, 2023 - Hello! Thank you for reaching out! I also agree with @ JBTechfanatic, if this does not help then I would also recommend reaching out to our - 2592942