Cappuccinos and Lattes

I have an espresso maker. It is a very inexpensive model, but it suits my needs nicely. Or rather, it did. It isn't working at the moment. It steams milk beautifully, yet I can't get it make an espresso. I'm thinking that it needs a good internal cleaning to get rid of all the calcium build up. However, this cheap model doesn't have a way to get inside it to clean, and I'm not sure how running vinegar through it will work.

So, I'm off to experiment. First to see if a bit of vinegar solves my problem, and second if that doesn't work then try and disassemble the maker. It already doesn't work so it isn't like I am going to wreck something. LOL