This is a common challenge that occurs for Amazon Fire TV Stick users if they are not using the original equipment manufacturer (OEM) power cord that came shipped with the device, a cable with insufficient voltage to properly power the device, or something wrong with the power supply.
1. Use the OEM power cord
Using the original equipment manufacturer (OEM) power cord that has come with the Amazon Fire TV Stick should resolve this issue. We recommend switching the power cord you're using if it is not the original that came with the device. You can also refer to Amazon's support forum where other users with this issue resolved it using the OEM power cord by clicking here. If you do not have the OEM power cord or it is not working, you can purchase a new one through Amazon or reach out to their support team to inquire about a replacement.
2. Try a different power supply or cord
If switching to the OEM (Original Equipment Manufacturer) power cord does not help, we recommend using another power supply. It is possible that the wall outlet, extension cord, or power-source does not have a strong enough voltage to properly power the device. You can also try using an alternative cord if the OEM cable is not working to see if this helps.