2 Responses to “Any hope for my mac II”

1. admin says:

   December 31 at 9:01 am

   In article <4qgclt$…@doc.zippo.com>, GRENDAL <rosm…@hollyberry.com> wrote:
   > I recently aquired a mac II.  Worked fine untill I plugged in a modem

   that uses ADB for 5volt supply.  I
   > cut the ADB connector from the modem and was using it with a mac plus,
   and got power from
   > seperate power supply.  When I got the mac II I reconnected the ADB jack

   incorrectly and when I
   > started up the computer the mouse and keyboard didn’t work.  The

   computer still displays and
   > seems to be fine with the exception of the mouse and keyboard.  I was

   told that there was not any
   > hope and the whole board was wasted.  Is there only one faulty component

   , an ADB chip that I can

   > replace the damaged one with

   There’s a book called "The Dead Mac Scrolls" by Larry Pina, all about
   fixing your Mac. Often, the ADB port can easily be fixed, there’s a filter
   that gets zapped. Get a copy of the book and give it a shot.

   Chris

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2. admin says:

   December 31 at 9:01 am

   In message <<4qgclt$…@doc.zippo.com>> GRENDAL <rosm…@hollyberry.com> writes:
   > cut the ADB connector from the modem and was using it with a mac plus, and got power from
   > seperate power supply.  When I got the mac II I reconnected the ADB jack incorrectly and when I
   > started up the computer the mouse and keyboard didn’t work.  The computer still displays and
   > seems to be fine with the exception of the mouse and keyboard.  I was told that there was not any
   > hope and the whole board was wasted.  Is there only one faulty component , an ADB chip that I can
   > replace the damaged one with

   With luck you’ve just fried the ADB fuse (F2) lies about an inch inland
   of the outside mouse socket. Without luck you’ve stuffed the ABD chip
   (UB13) 2 inches inland of the modem socket. Just go down to your
   friendly local apple dealer and buy another one for $9.95…….joke –
   those *&&$%#@@!s willwant to install another motherboard for 3x the
   value of the machine. Bettre off scrounging a chip off another kaput
   mac2 board (with a *different* fault). Apple’s service policies seem to
   strongly discourage any repair that costs less than a new machine.
   M