Just used my (second hand) Gaggia Cubika for the first time and after successfully pouring a shot, the group burst off when removed from pressure build up (coffee granules everywhere!!), and as a result the ON button is now jammed and I had to turn off from the plug. Does anyone know what I can do to,
a) prevent the pressure burst when removing the group
b) un-jam the ON button
Thanks coffee people!!!
a) prevent the pressure burst when removing the group
b) un-jam the ON button
Thanks coffee people!!!

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