Apple TV 4K is blinking, no control with my remote
Remote has no control, possible dead battery to remote
Question marked as
You can try controlling the TV with an iPhone and checking the battery of the remote using that. If it is dead, you can plug it in using a standard Lightning charger.
Using the app - https://support.apple.com/en-us/HT201664
Checking the battery - https://support.apple.com/guide/tv/charge-the-siri-remote-atvb7d4de50d/tvos#atvbd0d330fb
Lightning charger - https://www.apple.com/shop/product/ME291AM/A/lightning-to-usb-cable-05-m