Yellow display

[Janosch]

Hi,
I build a magic mirror according to this tutorial: https://www.youtube.com/watch?v=P4ISiUlIKrs.
At first everything worked just fine but then I opened up the mirror again to change the position of a cable.
Since then the display is yellow, it still shows the correct mirror with my modules but everything is yellow.
The failure has to be at the LCD Controller Board or at the display. I tried to connect the HDMI Cable to my normal monitor and everything worked fine.
Now I’m not very familiar with alonestanding displays or Controller boards. Is there a way for me to discover which part is broken, has someone made common experiences and can give me tips ?

Every answer is welcome!

Thanks in advance

Janosch

[dazza120]

@janosch it’s possible that one of the LCD cables itself is not seated properly that can cause those issues, unclip them and reattach them and let us know

[Janosch]

I ordered a new LCD cable. I deattached the old cable from the controller board and put on the new one. With the new cable the display was just white.
I connected the old cable and I’m quite sure that the display went yellow again.
Today I tried connecting the old and the new cable again and with both cables the display is just and only white.
Can anybody help me?
And is there a way to say for sure wether the failure is on the controller board or at the display?

Thanks in advance

Janosch