I'm attempting the trayload ATX converstion using the guides on radio mods and http://members.fortunecity.com/tinux1/sites/imac-atx.html. I like the simplicity of the fortune city one, even though it doesn't have softpower. The problem is that I don't have the power filter board any more, so there's just the 26 pin connector on the motherboard left to connect to. You can see an image of the connector here. http://www.radiomods.co.nz/imactoatxconversion/logicboardpowerconnector.jpg All the sites for Rev. A-D G3 iMac hacks involve the 24 pin power filter board.
Radio Mods has this pin out diagram but I need more information. The powerboard filter had a 5VR, 5VS and 3.3VS that aren't used in fortune city hack. But I don't know which pins this would relate to on the 26 pin connector. The apple service manual for Rev A-D doesn't have this pinout.
T+5V GND GND +3.3 +3.3 -12 GND GND +12 +5 +5 GND +12 -function
26 24 22 20 18 16 14 12 10 8 6 4 2 -pins
25 23 21 19 17 15 13 11 9 7 5 3 1 -pins
PFW GND GND +3.3 +3.3 +3.3 GND GND GND +5 +5 GND +5 -function
Do you know where I can find a more detailed pin out? Or can you help me identify which pins are 5VR, 5VS and 3.3VS. Thanks!
p.s. The plan is to is to solder like wires together and have a pushbutton switch to ground to turn on the ATX power supply.