Gregory's Serverlayer 3 was sorta hard and easy. it is mostly a ground plane, but there are a few other copper pours. i've got 100% connected, but there are some mystery pours that are just wired in parallel with pours on the top or bottom layer.
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 ahh that makes more sense. there are a few higher current connections, but more importantly, there are cuts in the ground plane! this creates a star ground at the large highlighted pad near the middle. this is the negative battery terminal (but after the current sense resistor) anyway, i could fix up a few footprints but this reverse engineering job is essentially completed. you can find the design files here: https://github.com/schlae/Thinkpad700CPower @tubetime Amazing job, would love to see a video on how exactly you go about it.  @tubetime That's amazing. What's the quote? Ah, yes. "Sometimes, magic is just someone spending more time on something than anyone else might reasonably expect." -- Teller @gogobonobo the thread explains how i did it. higher layer count boards require more invasive methods. but yes i wanted to be able to debug boards corroded by a leaking capacitor. |
@tubetime helps with thermals?