My sound machine is making unpleasant sounds. Now what? February 21, 2018 20:14 Updated If you like, you may try cleaning your machine. Over time, dust can build up on the motor inside, causing the sound to change. If that doesn’t help, please contact our customer service team, and we’ll take good care of you and your machine. Related articles Can I clean my sound machine? What is “pink noise”? What’s the process for a sound machine repair? My Dohm is not working. What are my options? My sound machine smells funny.