My brewer dripped a couple of "tear drops" and stopped. I then put a cup of white vinegar in the reservoir and ran the machine. During the first brew the drip started to open up but it then began to leak from the bottom. I unplugged the machine, turned it upright over the sink to drain any left over water and vinegar. I then plugged it back in and ran two more cups of white vinegar through it followed with two brews of fresh water to rinse. The machine is now dispensing coffee at full force and it is not leaking.
PS: I did check the puncture needle first and that was clean and the rubber gasket was in good shape.