Didn't matter anyway, since I discovered the SE/30 is lacking a floppy drive as well as a motherboard.  No hard drive either.

But now I know the SE motherboard is good.

The analog board in the SE/30 is a Revision C analog board, which is the same as what the SE has.  The analog board, power supply and CRT were from a SE FDHD that had a rusty floppy drive and no motherboard.  So, I am going to do another "surgery" and remove the analog board, power supply and CRT that came from the SE FDHD and install the analog board, power supply and CRT from the SE/30.

And hope I end up with a functional Macintosh SE as a result.  Don't know if the hard drive will work but I'll find out.