If the coffee machine sounds tortured, blocks or the coffee ends up in the pomace container then this is often due to the brew group.
Also if the coffee grounds are wet and muddy or the crema on the coffee is missing, then a new brew group can often solve the problem.
1x brew unit as shown
SUP005 Magic
SUP012 Magic
SUP012DE Magic
SUP012D Magic
SUP013 Magic
SUP014 Royal
SUP015 Royal
SUP015ST Stratos
SUP015V Royal
SUP016 Royal
SUP016C Royal
SUP016ERI Royal
SUP016E Royal
SUP016O Royal