PB 520c Contrast issues

[Carboy7]

I have a PowerBook 520c and there was a bit of a problem with the display where if you poke the display in the right place, the contrast will bug out. Sometimes if you hit in the same spot again, the display will become readable, but unstable. Basically, it goes from unreadable bright, to unreadable dark, to unstable dark, and then basically flicker.

I have saved a 520c from the depths of a neighbor's garage! Are you happy now?

 

[MikeatOSX]

Maybe the reason is one of the electrolytic capacitors on the inverter board?

 

[Carboy7]

Not sure. Can anyone provide a picture of the board or anything electronic that may reside behind this plastic panel?

 

[MikeatOSX]

http://tim.id.au/laptops/apple/powerbook/powerbook_500_series.pdf

 

[reukiodo]

According to

it looks like an array of capacitors, or perhaps the ribbon cable from the bottom board to the actual LCD.