Vizio soundbar pairing with subwoofer how - Samsung HT-X810T Theater System

Here are some troubleshooting steps you can try to pair your woofer with your Vizio VHT215 soundbar:

1. Power cycle: Turn off both the soundbar and the woofer and unplug them from their power source. Wait for a few minutes before plugging them back in and turning them on again.
2. Reset the soundbar: Press and hold the Bluetooth button on the soundbar until you see the light on the front panel start to flash rapidly. This will reset the soundbar and put it into pairing mode.
3. Reset the woofer: Press and hold the Pair button on the back of the woofer until you see the light on the front panel start to flash rapidly. This will reset the woofer and put it into pairing mode.
4. Check the distance: Make sure the woofer is within the recommended distance from the soundbar. Typically, this is around 30 feet or less.
5. Check for interference: Other wireless devices or electronic equipment in the vicinity can interfere with the Bluetooth signal. Move any such devices away from the soundbar and woofer, or turn them off temporarily.
6. Replace batteries: If your woofer uses batteries, make sure they are fresh and installed correctly.

If none of the above steps work, you may need to contact Vizio customer support for further assistance.

Pliug both soundbar and subwoofer in, Press and hold the "input" button on the soundbar for 4 seconds. The display should show two asterisks flashing. Press and hold the "pairing" button on the back of the subwoofer. The subwoofer light should turn blue (from red).

8 years late.

PAIRING THE JBL SB400 FOR WIRELESS OPERATION
After turning the soundbar and subwoofer on for the first time, you will need to "pair" the subwoofer and soundbar so they both operate at the same wireless frequency. To pair the units, press the Wireless Pairing switches on both units within 30 seconds of each other. The units will communicate with each other and operate at the same frequency.

http://resources.jvc.com/Resources/00/01/33/35.PDF

http://resources.jvc.com/Resources/00/01/33/34.PDF

Most likely, the "remote" wire to the subwoofer amplifier has come off or is not making good connection.

set sound to defoult on main receiver power of and then power on

Not sure the issue. HDMI from cable box to TV. Same with Vizio.
The soundbar usually connects to the optical out from the TV to the in on the soundbar. Subwoofer has to be paired to the soundbar. Instructions should explain or maybe find online by manufacturer

bluetooth speakers pair and connect to a 'source' not other speakers.

No adapter. Your sound bar has to have wireless built in.