Thank you for this offer. Meanwhile I was able to get my hands onto another mainboard (with same defects, unfortunately), but with two of them at hand and some 50++ hours with solder iron, conductivity tester and stereo microscope I finally managed to convince the old mainboard to get back to a...
How would you know which connections are supposed to exist in general? This is my main point of concern.
Is there a 1:1 feed-through between the expansion port and the VGA card header?
Did you dare to unsolder the expansion port as a whole, or did you just solder in wires for missing...
That's great. Perfect forum. Just enrolled here. Maybe it's possible to get this sorted out. I am also desparately searching for a schematic, but to no avail so far.
Maybe I am the one who bought that mainboard on Ebay recently :)
I also have one of these FMA3300 laptops (386DX40 by German...