I received the Individion back today, I reinstalled it and the computer starts up again without any problems.
I uploaded my configuration file back into the Individion, I saw that the CCKLine Pull Up was active and turned it off again, never used that before I think. Maybe I had done something wrong there that the Indivision did not agree with.
I removed the upper shield years ago.
Anyway, thanks Jens for making the Indivision usable again. Sent a week ago... now repaired and reinstalled.
What A Service 👍