I know that this is an old question but iFixit is good for helping multiple people with the same problem. My Mr. Coffee “Automatic espresso, cappuccino & latte maker” Model BVMC-EM7000DS is leaking from the bottom and not creating steam, having been in storage now for two years. It was working fine before it went into a box.
The machine could in theory drip clear water or coffee. Mine was dripping water. The unit normally drips into the overflow tray but mine was dripping under the back/left corner. Many screws need to be removed (delta-Y shaped) from the bottom panel. Once you’ve removed seven screws, the bottom does not want to come off. Situated in the middle of the tray area is a 1/2” horizontal clip as part of the plastic. You’ll need to ease the entire bottom backwards to clear this obstacle then the bottom panel will come off. Obviously, you should have removed power and everything removable.
Inspect all hoses and hose connections. Mine were all in working order. Mine appears to be leaking from the white water pump which connects the inlet tube from the reservoir to the tank which boils the water. It is unlikely that I will be able to order replacement parts for this water pump. I will still engage the company to see what options I might have.