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Please note also - THIS BLOG ENDS HERE WITH THE LAST ENTRY FROM NOVEMBER 9th 2021.

I have prepared a new blog with wordpress at https://vintagecomputing.info !!!

Thank you.

I realized that I didn't made anything meaningful with my Apple ][ Europlus, so I decided to exchange it for another vintage computer - an older Macintosh.
My first choice was a Mac SE/30, because this one can handle up to 128MB RAM, and it's capable to run A/UX. But....

A serious flaw of this model (SE/30) is an unreliable firmware ROM module/SIMM.
You can be lucky if you got a moment of a stable working condition, see here:

Unfortunately getting access to the logic board is not too easy. Opening the case would be very easy - except these two upper deep counter-sunk TORX screws:


This is a schematic picture of the place where you can find that ROM SIMM:

But to get the logic board in your hands, you had to follow a strange method of releasing the board itself from the frame. First you have to draw it a bit, but then you have to lift it on one side, to pull it in all - but SCSI, loudspeaker and floppy drive cable are still connected and will keep it in place. Very ugly.


After discovering that no sound is made from this macintosh, and because the ROM module makes often trouble, I decided to bring it back and take a Colour Macintosh (will be described in next blog entry).


Btw.: A good article about repairing a Mac SE/30 can be found at www.biwa.ne.jp