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That' s really strange .... I suppose that in the past at least the Authorized Service Centers should have had the service manual of the Macintosh Classic ...  ... a mistery ...  [?]

There aren't official schematics from Apple for the Macintosh Classic ... [:O] ]'> I didn't know. That's why there is nothing on the net ! Ok ... I'll try a way to fix my board ...

I would understood if Apple should ask for a fee in order to access information covered by copyright ... but not a third part asking a fee for access information of what doesn't own the rights. Anyway ... that's just my opinion  B)

Yeah ! But for 16$ ... [:(!] !]'>   No one have the schematics of the Macintosh Classic for free ? I can't believe that for a so famous computer the schematics are not available on the net ...  :simasimac:

Thanks for your info. I'll keep in mind to repair this board. But really no one have the schematics of the macintosh classic ??? :simasimac:

Hi, Generally speaking I agree with you but in this case we are talking about a four layer pcb. The signal tracks are on the top and on bottom of the pcb. The two inner layers are the power supply (5V and ground). There are some vias corroded that goes to the bottom layer. I rebuilt them...

Hi, I attached better photos of the pic2. Yes I'll go to re-check the disaster area  :simasimac:   [ :( ] Do you confirm that the board should boot also without the battery ?

Hi, I bought a Macintosh Classic but when I opened it I discovered that the battery leaked .... there was some traces corroded ...  I cleaned the board and rebuilt the traces with copper wires. There was also leakage from the electrolitic capacitors so I removed them ... cleaned and replaced...