I see nothing wrong with the control panels. The radar on/off button disabled is normally the case when:
1) You don't have the surface radar installed (I assume you visited HOME PORT since sept '42 and not just refitted.)
2) You are submerged.
3) Radar is damaged.
4) Graphical mods have been known to corrupt the game (see WIERD BUG
http://www.subsim.com/radioroom/showthread.php?t=131204
-Pv-