This post is from one of several previous incarnations of this site and probably doesn’t quite fit the current format. In a former life this was a group blog and a tumblelog before it became a static jekyll site. If anything looks broken or is worded oddly that could be why. Pardon the dust.
Yep its true, the Gameboy Advance has a secret contrast control hidden under the sticker on its rear. EAGB have the full instructions on how to adjust it. !!! WARNING: Pixelised does not condone making this adjustment and doing so may well invalidate your warranty so dont come crying back to us when you break your shiny new GBA…!!!
Update: It’s been confirmed, fiddling with this will permanently damage your GBA. We repeat, do not try this at home.