My 22″ Acer monitor died about a month ago. I did a little googling and found that this model has an output transformer prone to failure. It was a $20 gamble that paid off (new transformer from lcdparts sitting on the bubble wrap in the photo below ). About 45 minutes round trip, the majority of the time was spent figuring out disassembly. Photos were an important trail of digital breadcrumbs that I used to get the monitor back together.

Awesome video on the basic function of an LCD monitor here.