Display backlight doesn't work

Hi, I have a Powerbook G4 A1107 (the low res 17" model) with a display backlight that doesn't work. I'm figuring it is either the CCFL or the Inverter. Is there any way to tell short of, a) purchasing a $100 inverter board and plugging it in, or b) cracking open the Display to see if the bulb is burnt?

The computer has had no other issues, there was no prior flickering before the backlight died, the cables seem in good condition and have good connections, and the display is visible when a lamp or flashlight is placed behind it.