Power button fails to work about 95% of the time

Hello,
I have a Toshiba P205-S6267 that is having a strange issue.
About 95% of the time the power button fails to work when on battery, and it fails 100% of the time when the AC adapter is plugged in.
I am getting pretty stumped on this one and starting to think I may need to replace the 7-button circuit under the power button.  Before I spend the $55 to do that, I wanted to see if anyone had any advice for me.
Here are the things I have tried.
- the standard unplug the power / battery and wait a few minutes then plug it back in.
- tried this only on battery, same issue
- tried only on AC, won't power up at all
- checked AC adapter with multimeter and it was outputting the correct voltage (also it keeps the battery charged still)
- removed the keyboard and speaker cover then reseated the 7-button circuit
- cleaned the ribbon cable contacts and reseated the ribbon cable for the circuit
- removed RAM and tried each stick by itself, no change.
I'm kind of lost here.  Again, I am probably at a point where I need to replace hardware but I don't want to drop the cash without some kind of verification that I'm not retarded. 
Any assistance or advice is welcome.  Thank you.

Ah, I've been playing around with this and it seems I was mistaken about the nature of the problem.
It is deterministic, for one. It seemed nondeterministic because the action that makes the glasspane paint() fail is the act of giving focus to the JInternalFrame that the glasspane belongs to.
Why does giving focus to a JInternalFrame disable that frame's GlassPane? I can take focus away from it, and the repaint() method starts working again.

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