Schematics for eMac? or bodging lifted pads?

Hâlian

New Tinkerer
Sep 21, 2022
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Yesterday, I recapped my 1.25 GHz eMac (logic board no. 820-1591-A). However, I lifted pads on two of the capacitors (C473, C447) because I'm a n00b at soldering, and since it's a multilayer board, I have no idea where the traces lead. Would anyone happen to have schematics, or be able to help me route bodge wires?
 

Hâlian

New Tinkerer
Sep 21, 2022
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Let me know if you find schematics. How do you reset the PMU on this board?
I was never able to find schematics, but removing some of the poorly installed caps did a facially equivalent trick. Resetting the PMU requires opening the RAM door and pressing a small button to the bottom right of the RAM slots. Never press it more than once or you risk crashing the PMU!
 

xcmd

New Tinkerer
Dec 24, 2024
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Ah, I used to call that the CUDA reset (though CUDA chips are way older). IIRC if the PMU "crashes", it sucks down the PRAM battery, but this can be fixed by leaving power disconnected for a long period of time, as well as the PRAM battery, and performing the reset once again.
 
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