New 3DS XL won't turn on, no blue light

So the story behind this, is that I ordered a replacement screen and did the whole process and I’ve done some of these before with no issues. But when I tried powering it on AT FIRST I got a blue light pop sound, so I reseated the top screen ribbon cable and tried turning it back on, but NOW, I am not getting any light at all from it.

I noticed the 53 pin ribbon cable connector, on the middle left side of the motherboard, looks like one of the pins is gone (I would include a photo but cant), but I am not 100% sure if it is just like that or not. I would just like a second opinion on all of this.

Here’s some things I ruled out:

I did not put the battery in backwards I know that for a fact.

I tested with my multimeter and do get power from the daughter board to the main motherboard.

And the power button was tested with my multimeter and works.