I have a DIY LED strip w/ 12 blue LED's. Today, 2 wont light, 1 is so dim you can barely tell its on at all and the rest are so dim they wont light up the tank at all but you can see them glow. None are bright anymore.....

They light right up when plugged in. They dont turn off right away though....takes a few seconds and they fad out instead of turning off instantly.

Any ideas?