The light wouldn't come on in my Keruig K cup . I tried shaking it upside down and all the things everybody says to do . I took an air hose and blew out the needle in the top where the K cup goes and the bottom where the water empties out from the reservoir, when I did that water started pouring out of it. I plugged it back in and it worked. It powered backup where the lights wouldn't come on before.