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| Macintosh II doesn't power with button or keyboard, new batts & caps |
Posted by: Brooklyn on 2016-09-08 21:41:23
Hi guys, I have a Macintosh II that I can't get to power via the button on the back or via the keyboard. I have already replaced both batteries and the capacitors on the logic board. The system does start up just fine using the white wire from PS-3V battery-ground trick.
This is the version of the logic board with axial caps, not the aluminum radial SMT ones. The board itself is clean with no visible corrosion.
What else could be the issue here?
Thanks!
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Posted by: Elfen on 2016-09-08 21:55:34
Several traces were chewed up by cap good around the Power/Start Up section. There is a schematic floating around somewhere you can use to fix it.
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Posted by: Brooklyn on 2016-09-11 18:58:16
Can you link to said document? Only website I found referenced IIx boards, where the component numbering doesn't match. Also, this board is pretty clean. It did not use the aluminum smt caps that were prone to leaking
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