The power button on mine is on the bottom under the standby light about a inch behind it ( located this with the help of TCL support) I imagine it is like unplugging a desktop and draining the power to reset it. Mine is still working fine. ( of cour...
I had this happen to me too. I think it may be related to TCL update to 12.5 done on oct 31/23. I unplugged tv from wall and pressed power on tv for a few seconds. Reset the remote to reset code 9999. then Rest remote to code 0021 and now everthing...