My tv is stuck on one channel no guide will come up and the voice remote isn’t working

user_rc9lxq, Thanks so much for reaching out to Xfinity Support. If you have the Xfinity App, you can troubleshoot your cable box. In most cases, when you run a system refresh, it should fix this issue. If you still need assistance, 

Please send us a direct chat message with your full name and complete service address to “Xfinity Support”. To do so, click on the chat icon located at the top right of this forum's page.

Here's the detailed steps to direct message us:

• Click "Sign In" if necessary

• Click the "Direct Message” icon (upper right corner of this page)

• Click the "New message" (pencil and paper) icon

• Type "Xfinity Support" in the "to" line and select "Xfinity Support" from the drop-down list

• Type your message in the text area near the bottom of the window

• Press Enter to send your message