My Barberpole screen had the typical molded/crusted over appearence too. I removed it and cleaned it with warm soapy water and a soft cloth laying on a towel in the bathtub. The outside was the moldy side, inside just dirty.....
And it smells better too!
Electronically, it's getting there, I watch it occasionally but I would'nt think of making it a daily watcher but it's cool to show off!!