Do you have another tv you can connect this to? If so, see if it will boot up and give you a Roku homepage display.
If it does go to Settings > Display type and set it to the resolution of the first tv instead of the "auto" setting. When you get to the countdown screen click on the "yes" option. Now return it to the first tv and see if it works.
- Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
- Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T
- TCL Roku TV 43S425/C107X, Ser X000001R60KV, wifi