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1 Brewing unit won't go back in
The brewing unit of our Melitta Caffeo Solo did not going back in.
I found mentions of the motor not being properly aligned.
The official FAQ states: The motor might not be in the correct position. Check if the water tank is filled and if the drip tray is in place. Turn the appliance OFF and then ON again. Then simultaneously press the button for My-Coffee and the on/off button for more than 2 seconds. The motor will move into the correct position. Insert the brewing unit again and check that it is correctly locked in position.
However, this proposed solution did not reset the motor position in my case.
I found that the locking handle of the brewing unit moves a metal lever.
This metal lever engages a button in the machine.
By carefully pressing this button (i used the handle of a small spoon), the motor reset to the correct position.
Long story short: I don't have a question, and just wanted to post this here for future reference.
crwdns2934109:0crwdne2934109:0
1.6crwdns2936485:0crwdne2936485:0 
crwdns2944067:02crwdne2944067:0
perfect solution - most grateful.
crwdns2934271:0crwdnd2934271:0 jim frost crwdne2934271:0
Thank you so much for posting this -- a friend of mine gave me a Melitta machinea few days ago and I wasn't able to get the brewing unit back into it. It turns out the model I have, the Avanza 600, has two switches that need to be pressed simultaneously. I think I also had to put some water into it before it would come to life at all. Thank you again!
crwdns2934271:0crwdnd2934271:0 Jim Benstead crwdne2934271:0