Good afternoon colleagues, I entered this TV to the workshop that according to the owner fell asleep and tight does not know what key and appeared with lock key try using the "DISPLAY" and nothing in some Chinese TV this function is what unlocks the device I try to see If I can remove this key before anything and less to change the eprom !!! the models of this tv is Hisense TF2988GM thanks for your time and I look forward to your prompt response to the community