How do I replace LEDs for Coralife Lamps and where do I get the bulbs?

I have had 36%26quot; Coralife lamps, with daylight, monnlight, and LEDs, for about 6 months on my 75 gallon corner tank The LED bulbs quit. I can't figure out how to remove/replace them.How do I replace LEDs for Coralife Lamps and where do I get the bulbs?pet co petsmart rate as best you got to pull it towards u