Diagnose the problem with your Astra espresso machine. Pay attention to any strange noises, changes in taste or a complete malfunction of the machine. Check all valves, steamers, knobs or other moving parts that are susceptible to breaking down.
Obtain all necessary replacement parts. Once you have determined what is not working, you'll have to buy a new part. Often, these cost little and are easy to find. You can order directly from the factory on the Astra website or even find many of the parts in a hardware or plumbing store (See Reference 1). If parts are unavailable from the factory or out of stock in a local store, there are many online suppliers of materials, which have a large selection of Astra parts (See Reference 2).
Make all repairs on your own once you receive the replacement parts. Utilize the user's manual or any instructions that come with the parts as a guide.
Contact an expert if the repairs are too complicated or if you are not comfortable doing them on your own. Many espresso machine dealers offer repair services. Contact one in your area and ask about their experiences working with Astra machines. If your machine is still under warranty, you can return it to the Astra factory for all necessary repairs. Contact the customer service department for details.