Do paint fumes affect electronics?
Seems very unlikely. Consider that lots of harmful industrial chemicals are used in the production of electronics to begin with. 

Usually most people's concerns with VOC's associated with painting have to do with human health, especially the young and old. It's generally best to minimize any contact with these by ensuring lots of ventation and if possible, using a low VOC product. Latex based paints are preferable to oil based paints in this regard.