Won't start up after using as host for target firewire...help?!

Question

I used my iMac G4 1.25ghz flatpanel to install Tiger to my G3 iMac via Firewire Target mode, and now the G4 won't start up/has no power.
Because the G4 wouldn't start up in Target Firewire for some reason, i used the G4 as the host and started up the G3 in Target, restarted the G4 from the DVD, and installed Tiger to the G3 (i am positive i used the correct destination disk, adn the G3 is now showing the Welcome screen so it was sucessful).
Afer installing, the G4 automatically restarted on the Welcome screen- apparently normal in this situation, from what i read- and i turned it off via its power button because i want to do the Welcome stuff from the G3 itself (was that a mistake?). I'm thinking i might have only put it to sleep, tho, before i pulled the Firewire cable.. i didn't hold the button down long.
Afer i pulled the Firewire cable, the G4 wouldn't start up again via the Power button. I pulled the power cable and plugged it in again, but still absolutely nothing- obviously no power. No response to trying to reset PRAM, start it up from an external drive, via firewire, or CD- it's like it's unplugged.
What could have happened? Would pulling the Firewire cable have messed up PMU if it was only asleep, not shut down? Could i have damaged the power cable when i pulled it?
Could having used it to install to another drive in Target mode have screwed it up (i've read of many people doing this without problem).?
Should i try pushing the PMU button, or are there other things i can try first? (i can borrow a power cable from my son's G4 iMac)
I'd sure like to get it booted in some way or other ASAP to make sure i didn't mess up the G4's hard drive somehow...

Answer 1

thanks, i'm going to read and bookmark that for future ref... i had a post not post, tho, that said: tempest in a tea-pot, it was just something with the power supply. As soon as i tried a cord from a friend's a few hours later, it powered up. Oddly enuf, when i then reattached the original power cord, it powered up from that, too.
I wonder if these have some kind of time-delayed automatic reset on the firewire or power supply or pmu, because NOTHING i did worked right after it happened.