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Hello Chuckj, Thank you for reaching out to Sony. We sincerely apologize for any inconvenience you may have encountered with the Sony WH-RF400 headphones. Please be aware that the WH-RF400 utilizes radio frequency (RF) technology instead of Bluetooth. These headphones are designed with a transmitter base that connects to your TV via a 3.5 mm or RCA cable. If your TV does not have these ports, you may require an optical to RCA adapter for optimal connectivity. You can find the connection instructions here: https://www.sony.com/electronics/support/res/manuals/4743/da265ba85491320863fd7b2651202bb7/47438071M.pdf On the other hand, the WH-CH720N headphones can connect via Bluetooth, provided your TV supports the A2DP Bluetooth profile, which is necessary for transmitting audio to wireless headphones. If your TV is compatible with A2DP, the WH-CH720N should work seamlessly. For detailed instructions on connecting the WH-CH720N to your TV, please visit: https://helpguide.sony.net/mdr/2966/v1/en/contents/TP1000776852.html We hope this helps! Best regards, -Fred
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