Answer to: My blackberry 8830 blank out the screenHi, how are you? You must replace your LCD screen, before buying a new piece, look the backside on the broken LCD, there's a serial a number like: 007/111, 001/111. That's your LCD number, you must buy a new one that have that serial number. If you look around the site you'll find some guides that explain how you can replace the screen. I hope this helps you! Sorry about my English. Good luck.