I recently came into possession of a 512k Mac. I was really excited because it has the RAM upgrade and a SCSI controller card soldered straight to the CPU!  But it also has a very fried analog board.  Specifically the transistor Q3 is burned to a crisp, CR1 and R14 got hot enough to discolor the PCB.  I'm attaching pictures.  This doesn't sound like any type of failure I've read about so I was wondering if anyone had any advice to give.

I also have an even earlier analog board that I think came out of a 128k or very early 512k Mac.  It looks like it has a burned up flyback transformer.  I know those are becoming very rare these days.  Maybe I could pull the flyback off the other board and see if it works?

I would like to repair one or both of these boards but I wanted to see if anyone had any input before I ordered the parts sitting in my DigiKey shopping cart.