I'm answering my question myself - the issue came from the fact that both TV 1 and 2 were plugged, while 5V being sent to the screen by the pi. Only TV1 should be plugged in that configuration.

Add this one to the list, @Fleder. http://www.amazon.com/BW-3-5-Inch-Monitor-Automobile/dp/B0045IIZKU?ie=UTF8&psc=1&redirect=true&ref_=od_aui_detailpages00 I'm having an issue with this screen: http://www.sudomod.com/forum/viewtopic.php?f=8&t=2370&p=25035#p25035 - some flickering appears when insid...

I'm using this screen: https://www.amazon.co.uk/gp/product/B0056WJP1M/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 With a wire from the second pin of the CHMC chip to the red wire. I'm using it on an external power supply, 12V. The image is good, no flickering whatsoever when starting up, but as soon...