Only a week old. for the last couple of days will not brew a cup of any size. shows brewing on lcd, nothing comes out. I have noticed, the LCD has lines through it and also, no matter what size i choose, i get nothing but small size... however now it won't brew anything or maybe an inch worth

Try pushing a paper clip or dental pic up the spout, the part that pokes into the K-cup, they often plug up.

Carefully clean the sharp pin that pouches the hole in the top of the k-cups by inserting a toothpick or paperclip into the hole where the water is pushed into the k-cup.You need to descale it by cycling some vinegar and water through it. Pour a couple cups of vinegar and a cup of water in the reservoir push the large cup size, you can reuse the vinegar mix just don't pour any grounds back into the resevoir.Do this several times (you should see noticeable improvement)then run some clean tap water through so your coffee doesn't taste like vinegar. Hope this helps!Justin

First clean and please try again
Fill the reservoir with water.
Place your mug underneath the machine.
Add the K-Cup.
Choose your serving size.
Press the brew button to begin brewing.
Enjoy your delicious cup of coffee! .

Hi,

Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.

Keurig CoffeeBrewer not making a full cup of Coffee
heatman101

Hi,

Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.

Keurig CoffeeBrewer not making a full cup of Coffee
heatman101

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Hi,

Here is a tip that I wrote that will give you some things to try that will helpyou get your Keurig coffee brewer workingagain.

Keurig CoffeeBrewer not making a full cup of Coffee
heatman101

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Try completely unplugging your pot and then plugging it back in. It is possible that this will reset the programming in your coffee pot. If this doesn’t work, I recommend calling Brevell customer service and they will either help you or probably send you another pot.

In Uk i would take it back to shop as faulty and get either replacement or full refund as it is not fit for purpose. Depends where you live and what consumer rights you have.

Doesn't sound like a descaler issue. I am having problems with mine and noticed that water is flowing back into the reservoir when it is pouring into the coffee cup. I think there is a valve that is not closing properly.

I had the same problem, contacted Keurig and they suggested the descale procedure, which did nothing. The brew size was very small, the display would not let me select the size, and water was being pushed back into the reservoir. I was able to resolve the problem however.
First I went through a gallon of white vinegar, without results. Then I did the following:
Went to Walmart and bought "Brew Rite". Tried 8 cup mixture (8 cups of water, two tablespoons of mix), did not work. Being persistant, put in another 8 cups, and when the reservoir was empty of the solution let sit 2 hours while unplugged and then put in clear water. By the time I got half way through with the clear water, the device started working properly, no problems since. This may work for you...