Apple Colorsync - G3/G4 Scan Rate Problem?

whostudios asks: "Last year I bought two Apple Colorsync monitors which both died within 12 months. Both had a broken main delection board, and both were connected to blue and white G3's. Last week I bought myself a Sony G500 21" and in the box I found a special adapter which fixes some kind of a scan rate problem with G3's/G4's. Could this "problem" have something to do with my broken Colorsync monitors? I don't know anything about scan rates, but I read that the wrong scan rate could possibly damage a monitor..."