>>You also might pop some cheap capacitors and electrolytics.
Possibly, but 2 volts extra shouldnt dshouldn't do much. I'd wager that most components (even I'm cheap dodgy stuff) will be over specified because it's cheaper to go for the mass made stuff that's readily available than it is to get something that exactly matches your requirements.
If 14v would kill it, I'd wager it's got a fairly limited life on 12v anyway.
I should probably stress again that I'm just guessing here. I'm no electromagician.
EDITED: 17 Oct 2014 00:09 by KOSWIX