Remove your Chromecast with Google TV from your account

From your account in a browser

1. Go to https://myaccount.google.com/device-activity.
2. Make sure that you log in the Google Account where your Google TV is linked to.
3. Find the Google TV you'd like to remove from your account, then select it.
4. Select Sign out   Sign out.

From Chromecast with Google TV

1. At the top right, open the user profile icon ​​select Settings.
2. Open Accounts & Sign In and select the Google Account you want to remove.
3. Select Remove Remove account.