Ipad 4 not charging and not starting
my Ipad 4's battery has reached 0% two days ago. As usual I attached it to the original charger (with non-original cable) but it would neither charge anything (just stay as in the attached picture) or boot. After inserting the cable and after pressing the power button the attached picture appears on the screen for two seconds but nothing else. It stayed on the charger for around 24h now without any changes.
I have already researched a little and have tried a second cable, charging dock and cleaned the lighting adapter (nothing noticable came out). I also tried the different combinations of pressing the power and home button, but the Ipad would just stay in the state as in the picture.
I have run over this tutorial from 2012: Ipad Dock connector no longer working
Does anyone know if this procedure would be applicable to the Ipad 4 too? Any other ideas?
Thank you a lot for your help!