¿Why power button doesn't turn on screen?

I tried to change the usb c port of my oneplus 7 pro. When I finished the process apparently screen doesn’t work but after trying some things (I don’t remember how I got it) screen turned on. Since this point, I was able to use my phone normally without any problem except one: If I use the power button to turn off the screen, I can’t turn it on again.

Any idea of which piece could I have broken or disconnected in my fixing attempt?

Answer this question I have this problem too

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