A few weeks ago I had a problem with my Nanao MS-2931 OSD in my Blast City. Turns out it was a wire that had been pinched and severed. Fixed that and I am now trying to fix my screen convergence and would like to throw up a grid and other test patterns but the test button doesn't do anything when pushed. The other two buttons work and I even switched buttons around to see if I had a bad switch, to no avail. Am I being silly and missing something here?