Hardwood T/S
Member
Plug in the 60W OEM magsafe, you usually get a green light w/fan spin, no chime/display/anything. Fan continually runs higher and higher etc, the usual. No USB activity/no beeps when ram is not inserted.
Occasionally, when optical drive is connected, you'll get the whir of the optical drive starting, but still no display/chime/etc.
Now I did replace U6100 and reflow'd SMC to rule out easy fixes, did some inspecting around the board to see if anything was amiss--found C3887 and R1810 poppin off the board, due to corrosion. Didn't bother with C3887 as it was TBLT, but R1810 seems to me the likely culprit as to why this board isn't fully booting. Unfortunately, pad 1 was already gone, and while attempting to solder a nice lil jumper wire to it, pad 2 decided to pop off as well. So, now I have no pads for R1810 and unfortunately the closest trace points are nearly half a board away. Before I go crazy over this, is this likely the reason why the board isn't booting? Not sure if this data line is critical for board POST.
edit - if not obvious ALL_SYS_PWRGD and VCORE have proper voltages, 3.4v/1.2v. As a side note, 3v42 is 3.5v and PPBUS_G3H is 12.62v. Bit higher than usual?
Occasionally, when optical drive is connected, you'll get the whir of the optical drive starting, but still no display/chime/etc.
Now I did replace U6100 and reflow'd SMC to rule out easy fixes, did some inspecting around the board to see if anything was amiss--found C3887 and R1810 poppin off the board, due to corrosion. Didn't bother with C3887 as it was TBLT, but R1810 seems to me the likely culprit as to why this board isn't fully booting. Unfortunately, pad 1 was already gone, and while attempting to solder a nice lil jumper wire to it, pad 2 decided to pop off as well. So, now I have no pads for R1810 and unfortunately the closest trace points are nearly half a board away. Before I go crazy over this, is this likely the reason why the board isn't booting? Not sure if this data line is critical for board POST.
edit - if not obvious ALL_SYS_PWRGD and VCORE have proper voltages, 3.4v/1.2v. As a side note, 3v42 is 3.5v and PPBUS_G3H is 12.62v. Bit higher than usual?
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