Usually metric screw M5 or M6 0.7pitch. Try local hardware store, should not be more then 25 cent each so you try 1/2" long and up.

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague