Review on Keurig K-Classic Coffee Maker Rhubarb Edition: Single Serve Brewer for 6 to 10 Oz. Brew Sizes by Raquel Lopez

I read some posts here where the brewer accidentally stops working. The first one I bought came out in 2 days. The replacement stopped working after 2.5 weeks and behaved the same way - just didn't brew coffee. If this happens to you, the problem may be that (I discovered this by accident and blamed Keurig for not including a note or instructions in the documentation) the piercing needle is clogged with dirt or coffee grounds. The device detects excessive back pressure and stops. All you have to do is take a paperclip and open a piece of wire to insert it on either side of the needle to remove any dirt. After that the block worked fine. If you call Keurig, you'll also get a device to clear that port. If your machine tries to brew a cup but stops without filling the cup, try it first.