Hello, have you tried running through a "troubleshooting guide" like this Firestick black screen walkthrough? Usually the fix is something simple - like the TV is switched to the wrong HDMI port.

Hello! I hope you got it fixed. If not, and for others having similar issues, try this step-by-step troubleshooting guide on Firestick black screen issues. If it seems like your Firestick isn't powering on AT ALL, then you can also try this Firestick won't turn on troubleshooting guide. In those articles are troubleshooting steps like these: 10 Most Common Reasons Why Firestick Won’t Turn On (1) Loose connections (2) Faulty charging port (3) Outdated software (4) Internet connectivity issues (5) Insufficient power supply (6) Compatibility issues (7) Power failure (8) Broken USB connection (9) Glitch on your smart TV or Firestick device (10) Corrupted memory/cache Good luck!

Hi! You don't need to let Firestick charge. It just uses power from being directly-connected to a power outlet (using a power supply). Personally, I use this guide on fixing Firestick won't turn on issues. I've had good luck with the troubleshooting in that walkthrough.