A closer look at the mechanism that is responsible for piercing the capsule lid, I had wondered for a long time that these tiny thorns always manages to punch the cover of the capsule. The time has come, the lid does not appear to get the necessary hole and the capsule is pressurized, so that the lever no longer be opened. The pressure had broken down after three hours, I was able to remove the capsule. In a new trial, I have the capsule tray closed with more impetus, in the hope that that provides a more accurate hole, at least it works again, let's see how long.
So overall not quite satisfactory .... would halt the other reviews to read before .... but habs unfortunately completely spontaneous and ill-store bought, to blame the Tchibo.