Revival Complete! Mission Accomplished.
Video for board 3 is compiling and will be posted in 3 hours. LOL (G5 is slow at iMovie)
Board #3 was giving me fits. No matter how much I "flexed" it, it would not chime, would not produce video, nothing.. So i proceeded to further troubleshooting by first checking the Address and Data lines for shorts. Everything was ok there, so then I started checking the logical supply grid. Both the ground plane, and the +5V which is required at minimum to get it to boot. dont need the -5v or +/-12v to boot an SE/30. those are only needed for peripherals and sound.
Ground had proper connection at all ICs. 5V had proper connection at all ICs. So I was ready to throw in the towel for the day and worry about it later when I felt like dragging out the scope. But i decided to check all the filter chokes. Well guess what, L13 was open circuit, preventing +5v from getting to the 32Mhz Oscillator. Sure enough when I went to remove it, it fell apart. So that explains the intermittent operation and eventual failure.
Also, I did discover on Board #2 that there is a solder blob stuck inside the floppy connector header. So i dunno how I am going to fix this besides snip it all out and replace it.
Jumped out L13, and sure enough, it fired right up. it is now operational and stable.
. Those are done, NEXT.....
I hope this helps people out. I haven't really seen any replies, So I am not sure what people think of all this. But as long as it helps out the next person, its all worth it.
Main PC: Intel core I7 920, MSI x58 platinum, Radeon4850
PB: tibook G4, ibook G4, Lombard, 160, 165, 180, Duo 2300x2, Duo 270c x2, 520cPPC, 3400c, 1400c
Desktop: G3AIO, 5260/100 x2, SE, SE/30, 512k, plus, LCIII, 7100, iMac G5 iSight, 6400/225