Hi Andy, Thank you for reaching out to us. If you’re not receiving all channels, first ensure that your coaxial cable is securely connected to the TV. Then, run Auto Program: Home > Menu > Settings > All Settings > Broadcasting > Auto Program. Select Start to begin auto-programming, and then select either Air, Cable, or Both. - Select Air if you're using an antenna only. - Select Cable if you're using a cable box only. - Select Both if you're using an antenna and a cable box. You will get the most channels this way. If you're still having difficulties, please reach us on Facebook or Chat with us on the Samsung website. You can also reach us at 1-800-SAMSUNG / Available 8AM - 12AM EST, 7 days a week. ~Samsung Advisor

Hi Patti, We appreciate your purchase and are sorry for any confusion regarding voice assistants. You are correct, the DU7200 does not have voice assistants built in. However, they do work with Alexa. You can connect them to your existing Alexa device to ask them to turn on your TV, change channels, control volume, and more. Our DU8000 TV Series and above offer voice command and built-in voice assistants. If you need assistance connecting your external Alexa device or if there’s anything we can ever help with, please call us at 1-800-SAMSUNG, 8 AM - 12 AM EST, seven days a week. Or visit us on the Samsung website and click on the ‘Support’ link for: 1) LiveChat 2) Manuals, Software, & Warranty Info ~ Samsung Advisor