Dead for no apparent reason - logic board AGAIN?

Question

So last night, after I had installed all my software updates and restarted successfully, I decided to pop in a new airport card b/c mine had been giving me trouble (and I wanted to find out whther it was the card or the logic board that was failing)
Well. I found out. The thing successfully shut down without a problem, and replaced the card without a problem, plugged it in. hit the power button. nothing. nothing nothing.
not even a hum or a chatter.
I've been poking through the discussions here, and I understand that this is likely a logic board failure.
I've already had my logic board replaced, twice I think. The funny thing is that my poor 'book worked for 3 yrs. without issue and now it's been failing close to once a year.
I'm kind of at a loss as for what to do, I really can't afford to keep getting it fixed like this! Also, I have two exams this week, and yup, of course I take all of my notes on my laptop. Distressing, to say the least.
Well at least that was cathartic.
ibook G3   Mac OS X (10.4.7)   there's no option for 10.4.8.... also, dead.

Answer 1

If it's the recognized logic board failure, it will usually start up at least. You may have to wait overnight for it to start up again. I did on two of my three logic board failures.
You may know that enough Dual USB G3 iBooks suffered from this problem that Apple began the iBook Logic Board Repair Extension Program in January of 2004. Check out the FAQ page and if the symptoms look familiar, give Apple a call. If your iBook qualifies, it's a free fix.
If you are past the three-year time limit, try calling [phone] and ask for Customer Relations (NOT Customer Service--they can't help you) and ask them to please make an exception to the three-year limit in your case.
If the answer from Apple is absolutely, positively, "NO!" DT & T Computer Services in Fremont, California offers the cheapest repair I've found. They have a six-month warranty on the repair.
Good luck!