I've had my K-cup coffee machine for over a year, and recently it's only brewing about half a cup (sometimes less). I've read through the manual, and done the whole de-scale thing (run white vinegar through the machine, etc). It'll run fine for a cup or two afterward, then it's back to the same 1/2 cup shenanigans. The display says to de-scale, so I can only assume it's still an internal issue.
I recently bought a filter that you put in the tank, because I typically use tap water (which I'm sure leads to the build-up), but I still have the 1/2 cup issue.
Has anyone had this happen, and what did you do to fix the problem?