Little extra onfo: I can't seem to find that part anywhere, and I can see the ribbon is slightly ripped in its angle, which must have happened when I put the logic board back in place. I can live without it, but it is strange having a keyboard lit only on one side... so any hint will be appreciated.

So I just completed the whole sequence and everything went fine, really really well done Carsten! Only thing that went wrong is minor but still annoying: it seems I broke the left keyboard backlight cable. What to do in such a case?

Very nice guide, it helped me repair my A7 locked shutter (which mechanism was blocked by a small piece of metal). On step 19 there was a small ribbon that was missing in your guide, you can see it is already removed on the top left. There were a couple more small details, but overall such fantastic help, thank you!!

Thank you Danimir Ljepava, a bit of glue fixed it for me indeed!

Thank you Danimir Ljepava for your trick, it actually fixed it for me. The screwing did not do much to my trackpad (the left click was getting stuck, but I did notice that the rubber feet were going away when I opened it. A bit of glue and the click is now responsive again.