Welcome to the Roku Community!
We can certainly understand your concern regarding the overheating issue of your TCL Roku TV.
In this case, we suggest contacting your TV manufacturer directly to report this issue and request additional support. Each Roku TV manufacturer provides direct support and warranty services for their products running the Roku OS.
You can reach them here: https://support.tcl.com/us or call at 1-877-300-8837
If you have any other questions or concerns, please let us know.