I just got this iMac G4 from someone i know and everything works on it except the screen is so dim you can barley see anything.

At first i thought it was jsut the brightness turned all the way down , so i hooked it up to other screen using the port in the back , but that came in good and the birghtness was good.

I was playing with it earlier and i moved the screen a certain way and it came in pretty clear in color but it was such a breif moment and it hasnt does that since then.

Does anyone have an idea what it could be?