Hi Austin, If your HW-B550F soundbar will not power on, try the following troubleshooting steps:
First, make sure the power cable is securely connected to both the soundbar and a working wall outlet. If possible, try a different outlet to rule out power issues. If you are using a surge protector or power strip, bypass it and plug the unit directly into the wall.
Next, check the power cable for any visible damage and ensure it is firmly seated in the back of the soundbar. If the outlet is working but the soundbar still shows no response, try a power reset by unplugging the soundbar from the outlet for about 5–10 minutes, then plugging it back in.
If you need more help, Samsung is here for you. Please call us at 1-800-SAMSUNG, Mon – Fri 8 AM – 9 PM EST, Sat & Sun 8 AM – 6 PM EST. Live Chat with an agent as well as manuals, software, creating a service ticket, and warranty info can be found at the ‘Support’ link on our Samsung website.
~ Samsung Solutions