Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
I was changing to a new cable box and it was defective. I tried to reinstall the older box and now I keep getting the message on my TV screen that it can’t find the cable signal. I reconnected everything like before. I don’t know what I’m doing wrong.
Talk to your cable company. I'm guessing they reconfigured your account to connect to your new box (each device has a unique code called a MAC number to which your signals are routed), so it can no longer connect to your old one.
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T