Nintendo Switch Lite has Backlight but no Display

Nintendo Questions Nintendo Switch Lite
1

I have a nintendo switch lite here with no display after I repaired it. I have no clue what could have went wrong, but I need help.

I got it with bluescreen. So first i reflowed the CPU, it seemingly worked, but I had no display (backlight, touchscreen, everything else seems to work fine). I took the CPU down, reballed it, just resoldered it, but still no display. Everything else works, I have all the keys (they make a sound), well sound, touch works and backlight. The switch charges as it should.
What can I do? Maybe flux in the connector of the screen, but i flushed it with ipa several times. Under the microscope i see no damaged pins.

What now? What should I check? Please help

2

I did some measurements:

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3

I bought and tested with a new display, still just backlight. So it is a problem on the mainboard. Which chips are responsible for picture of lcd on switch lite?

4

Hi. On the video connector, counting only the larger pins and from right to left, make sure you have around -5.4V (pin 8) and 5.4V (pin 10.)

5

Hi there, I am very sorry to answer so late, as I really did not notice that someone has answered to my question.
I am not 100% sure which pins you mean, but I will add a picture with all the voltages I measured on the shown pins.

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