TV screen is blank

Please check the following

1. Player is assigned to a Group, Group has been assigned with a playlist and playlist has assets to play. Also make sure those assets are not deleted.
2. Weblink assigned has no CORS restrictions, otherwise use "webpage" link type to add those links Under ADD assets button.
3. Weblink contains flash content or link contains heavy JavaScript content which Pi is not able to handle.
4. Protected youtube links and Youtube playlists may not play all the time
5. SD card in the player is full, reduce the number of assets and re-deploy (you can check the SD card usage by using "df -h" command under piShell or ssh terminal)