I have several 120-12v bricks, ranging from 2a to 5a output. I haven't had any problems with the bricks themselves, but several cords have failed! On several occasions, I would bench test a set-up... say a 12v pump, powered off a 120Vac receptacle. Everything would work fine... that is, until I actually installed it. I mean, routing the cord thru a wall, or whatever, sealing things up, etc., just to find it no longer worked! I would pull everything back out... set-up the bench test again, and no power. But if I replaced the brick's power cord, things would work again... frustrating as all get out! I now have numerous back up cords.
