https://youtube.com/@mikeselectricstuff/videos Teardowns of biomedical/x-ray/optical machines, as well as deep dives into reverse engineering and clever electrical design.

zeptobars for die shots https://x.com/zeptobars

der8auer is mostly pc hardware focused, but has some interesting videos looking at chips https://www.youtube.com/@der8auer-en

bigclivedotcom for teardowns of random electronics https://www.youtube.com/bigclivedotcom