Chosen Solution
The screen is replaced, but the issue started some time after that. Have tried to swap battery, charging port and screen, but the issue remains. No obvious damage to the mb. Where should I look further? Please see video of the issue here, sorry for bad quality, but I think you can see whats going on. Anybody else seen this? http://mfi.re/watch/fv5oiw365r7vkv1/VID_…
Hi Jan, Did you try to restore/DFU mode? I cannot play the video properly so im just asking, does it pop a blue screen just before the bootloop starts again?