I change my router recently with different wifi name and password.
After that my soundbar could not connect to TV through wifi.
TV is set to newest wifi password.
I tried all of the possible way to reset the soundbar, but I do not think there is a physical way to reset it. My TV also does not recognize by the TV. Smarthing apps also cannot detect the device.
HDMI, Bluetooth are all working fine.
Please try this: With the soundbar power on, hold the Volume + and Volume - buttons on the soundbar for 10 seconds.
Have you updated the SSID on the television? Usually, the only issue will come is from keeping the same SSID and changing the password.