White LED problems in General Electronics Posted November 4, 2013 Also, it is generally not good to parallel LEDs. Hmmm - I don't know how else I can do it! I'm very new to this. I thought msp430->shift register->darlington array as sink was an OK way to be able to turn on or off sets of 3 of 4 leds I'm not surprised that ebay is a dumping ground for sub-par components. I'd have thought a seller specialising in LEDs wouldn't want the bother of the -ve feedback on duff things though.