Hem 
It all seems right!
When you press the power button in the ttgo does the ttgo turn on? “you should see the blue led flash”.
If the ttgo does not turn on there is something wrong or shorted or the display is malfunctioning, usually those displays heat up if they have the pins reversed … but there is another thing to say, what firmware did you put in the ttgo? what kind of file did you use ??