Logic Board - Macintosh SE Reloaded

[JDW]

Congrats, @pff000 !

 

[Kai Robinson]

I am happy to report a successful build with the latest version of the board from MacEffects.
I followed @JDW's wonderful videos and BOM/instructions and everything seems to work great on the first boot.

Just curious, what's the board revision printed on the PCB?

 

[pff000]

Just curious, what's the board revision printed on the PCB?

It says Revision 1.6b on the bottom of the PCB.

 

[tmtrains]

Guys ! I fixed it totally !

Now starts up great with a crisp picture, perfectly centred. (pictures probably coming soon).

Besides replacing U2B, I removed C67, which as marked as optional, but which I had populated. Also, I did plug the floppy drive, but that was not causing the issue. The Mac now starts with or without the drive.

I would recommend to never populate C67. Which is weird, as it is present on schematics, but on none of the SE boards I have.

Reading schematics and probing components is the way to go.

Hello!

I'm encountering the same sad mac error (with nothing connected, just power). Aside from randomly replacing chips, what are ways to narrow down what on the board is causing this?

 

[Kai Robinson]

What's the Sad Mac error you're getting?

 

[tmtrains]

What's the Sad Mac error you're getting?

The 0000000F / 0000000A error.