**** Pin 9 is going to be the bottleneck in any attempt to 'quick-n-dirty'
connect a non-Classic logic board to a Classic analog board+monitor, since
it is unique to the classic. My guess is that this requires an add-on
circuit that generates a PWM signal. First, I'm going to try it without.

Try this. Disconnect (cut) the wire to pin 9 in your Classic. Leave everything else 
connected.
Turn on your Classic and see if you have any video. I would guess is you will not have 
any video
I think line 9 is looking for a resistor to ground, or a resistor to 5v.
This is just a guess. YOU COULD BLOW UP YOUR MAC DOING THIS.
So the question is.. Do you feel lucky?
Maybe if you could measure the voltage at pin 9 with the brightness set high and low.
And see if any voltage is coming from the logic board or the analog board with the 
wire cut.
Anyway I think you need to figure out how to make your Classic work without pin 9 
connected.
Good luck.
Keep us posted.
johnsn

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