I plugged in my tv and it turn on by itself but it started to change colors I disconnected but it did the same thing I try es to reset it with the button but it did not do anything also this is not my frost tcl roku tv and it has never done this before
Thanks for the inquiry.
Have you tried contacting TCL support yet to inquire further? I'd suggest starting there to see what options or suggestions they can provide. Each Roku TV manufacturer provides direct support for their products running the Roku OS.
You can reach them here: https://support.tclusa.com/televisions or at 1-877-300-8837.
Thanks,
Danny