desolder each LED individually, noting polarity. install and solder new LEDs. voila. done. if you dont have any soldering skills, pick up a nice weller soldering iron, some rosin core solder, and practice practice practice. i would consider it a 7 out of 10 on the hardness scale for an experienced solderer, and ive had a soldering iron in my hand for the past 13 years. so its up to you.