If Peacocktv.com/tv is not working on your TV, try the following:
Restart your device by unplugging the power or powering down. Wait 20 seconds, then plug the device back in or reboot.
Check the device’s internet connection. Make sure you have a strong enough connection for streaming. Clear your device’s cache and data (see app settings on your device). Or, uninstall and then reinstall the Peacock application on your device.
For more details https://www.peacockcomtvcode.com/