Gemmy Lightshow for Christmas Lights

Can anyone point to a tutorial or website that shows you how to setup your own arduino kit for Christmas lights? What do I need to get?

I have a set of Gemmy Lightshow select color changing lights 48 count string of LED lights but the circuit board is dying. All of the lights work but after a couple minutes, most shut off leaving just a few lights, 8-10, blinking. The circuit board looks really simple and small, I'd like to replace it with something that I can program in my own light show.

Thanks for any tips and help