On Friday, October 11, 2002, at 08:36  PM, Dan Dumas wrote:

> Meanwhile, the bondi blue is still dead. I can't believe a firmware 
> upgrade
> would completely disable a computer. If I had known there was a risk I
> would never have attempted it.

generally speaking, a firmware update won't kill a computer directly. 
when a computer dies after a firmware update, it almost always means 
that the logic board was already goofed up, and the firmware update 
just made the problem show its ugly head. firmware or not, this same 
logic board would have died anyway... and probably sooner than later.

> Can someone tell me the difference between a motherboard, logic board,
> analog board? I suspect the motherboard and logic board are the same, 
> but I
> want to make sure.

a logic board and a motherboard are roughly the same thing. the 
difference lies in that a logic board has a processor on it, whereas a 
motherboard has a processor on a separate 'daughter card'. these days, 
though, people and manufacturers tend to use one term or another mostly 
out of habit. Apple has 'logic boards', not motherboards.

An analog board is part of a monitor; in the iMac, it's part of the 
display assembly on top. It's the board that actually takes the video 
signal from the Graphics chip portion of the logic board and turns it 
into a signal the video deflector on the CRT can actually display for 
you.


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