Navigation screen won't come on
 

I have a 03 G35 sedan with a double din set up. My deck works just fine but the other day my navigation screen started coming on intermittently. But it's mostly just blank now and rarely comes on. Is this a fuse issue?

Intermittent is rarely a fuse issue. Probably some component on the board that's gotten too hot once or twice and is now not completely soldered to the board.