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#1 2017-10-20 21:13:50

Davex80
Member
Registered: 2017-10-20
Posts: 2

Capacitors Mac Classic 2

Does anyone has schematics for a Mac Classic 2?  I was changing leaking capacitors but the machine is very old, but a soldering cap went off the board, I can't solder there anymore... If anyone knows where the positive side of capacitor C9 connects...  I could put a wire.

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#2 2017-10-21 06:42:38

French
Member
Registered: 2017-06-17
Posts: 10

Re: Capacitors Mac Classic 2

The positive side can be connected to the small trace just below the pad, or to R29 (on the other side of the board)

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#3 2017-12-01 04:02:58

Davex80
Member
Registered: 2017-10-20
Posts: 2

Re: Capacitors Mac Classic 2

I have changed all the capacitors on the board.  It did boot, then freezes, then back to the big vertical black/white bars.  Anyone have any idea?

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#4 2017-12-02 08:37:51

French
Member
Registered: 2017-06-17
Posts: 10

Re: Capacitors Mac Classic 2

probably related to the EGRET chip (upper right part of the board) that is surrounded by capacitors, either the chip is still covered with goo or a trace is damaged in the neighborhood.

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