I bought the BW 3.5 screen from Amazon and got the Variant "'InnoLux' Ebay screen"
(Found in the Sudomod Wiki. Link:https://www.sudomod.com/wiki/index.php/GBZ_Screen).
The display works so far perfectly with 12V. As soon as I connect 5V to it, the screen starts flickering, which was also predictable, since the whole screen is designed for 12V.
So I did the modification as in the picture of variant "'InnoLux' Ebay screen" shown and tested it.
Now to the problem:
As long as the Raspberry Pi Zero is running and I'm doing the modification while the PI is still running, everything works as it should.
But if I solder the wire like the picture is showing, and then start the PI, it wont boot anymore.
Only when im removing the wire, starting the PI to boot up and then connect the wire back it will work perfectly.
I also have the cable lengths already cut to the minimum, without success.
The IC on which the modification was performed is called "rzc2013" and the pin is called "SW".
Thanks in advance for any tips.
P.S.: I attach some picture of my actual screen maybe it is different to the Variant "'InnoLux' Ebay screen" but i dont think so.