Follow these steps to troubleshoot:
1. Replace Remote Batteries: Swap out the batteries in your remote control.
2. Use Original Power Equipment: Utilize the power cable and adapter provided with your Fire TV device.
3. Power Cord Reset: Unplug the power cord from your Fire TV device or wall outlet for several seconds, then reconnect it.
4. Check TV Input: Press the source or input button on your remote and ensure your TV input matches the name or number of the HDMI port your Fire TV is connected to.
5. Use High-Speed HDMI Cable: Employ an HDMI cable rated for high speed (available for separate purchase).
6. Direct Connection: If using an HDMI hub, unplug your Fire TV from the hub and connect it directly to your TV's HDMI port.
By following these guidelines, you can troubleshoot and resolve issues preventing your Fire TV device from powering on.