Replaced the Switch's digitizer, but now lcd screen won't work?

I replaced the digitizer with the iFixit part. When powering on, the screen does not light up, but the touch screen does seem to respond. I did not take the screen ribbon cable out at any point. I did have a bit of trouble getting the game slot board re-connected, maybe that got damaged? Any idea what might be causing the problem or a way to troubleshoot it?

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Check the 2 ribbon cables on the bottom left the right side 1 is for backlight.