Numark NV and NVII - My NV screens are not displaying wave forms. What should I do?

numark nv displayscreenv2If your music files have not been analyzed in Serato prior to connecting your NV or NVII, your NV screens may not display the waveforms.  There are few reasons this may occur:

Using the Analyze Files function in Serato helps detect file corruption, builds and saves waveform overviews, and calculates auto-gain and BPM values. This step is necessary to ensure that all of your files are ready to be used with your NV and NVII. The following guide will walk you through how to analyze your files in Serato DJ and what to do if you encounter an error.


  1. Before you begin
  2. How to Analyze and Prepare Files for Serato
  3. Corrupt Files - Everything You Need to Know
  4. Further Technical Support



Before You Begin

Many issues can be resolved by updating your software.  Before you proceed with additional troubleshooting, make sure you're running the latest version of Serato DJ.



How to Analyze and Prepare Files for Serato

  1. To analyze files in Serato DJ, please run your Serato software in offline mode (with the NV/NVII USB cable disconnected from your hardware).  

    numark nv offlinemode
  2. Check off both Set Beat Grid and Set Auto BPM prior to analyzing your files.  We recommend leaving your Range at None.

    numark nv setbeatgridsetautobpm
  3. Highlight the song that you wish to analyze. 

    numark nv selectsongs
  4. You could click the Analyze Files button to start the process or simply drag and drop your highlighted songs onto the Analyze Files button.

    numark nv analyzefilesbutton
  5. Wait until this has finished analyzing all of your songs.  When complete, your Analyze Files button will become un-highlighted.  

    numark nv selectsongs

Note: The auto BPM function will not be applied if the track already contains BPM information.  If after analyzing the songs, you know the current BPM information was analyzed incorrectly for a particular track, double click on the BPM tag for the track and delete the BPM value before re-analyzing.  To re-analyze these files and calculate an auto BPM or auto gain value, simply drag and drop them onto the Analyze Files button.

If you are unable to complete the analyzing of your files, see Serato's article Troubleshooting freezing and crashing while Analyzing Files for further assistance.  


Corrupt Files - Everything You Need to Know 

numark nv seratocorruptfilesIf a corrupt file is detected during the analyze process, Serato will tag the track with a corrupt file icon (pictured right).  It is important that ANY corrupt files are removed from the library. Corrupt files can cause Serato to crash even if the file is not currently in use. If you're using an external hard drive or thumb drive, please delete these files from your Serato database.  Keep in mind, when using an external hard drive or thumb drive, your files may need to be re-analyzed each time before using your NV.   

To delete a song from the Serato library, navigate to the ALL section.  Click on the song to select it and use the keyboard shortcut Control + Delete for PC users or Command + Delete for Mac users to delete the song (make sure the Protect Library option in Serato's setup is turned off).

For information on supported Serato DJ file types, click here or read below.


Corrupt File Error Messages in Serato


Unsupported File Error Messages in Serato


Further Technical Support

Whether you are a customer or dealer, if you already own a Numark product, or if you just have pre-sales questions, the Numark technical support team is available to help!

Each product has a dedicated support page on the website where you can find manuals, specifications, software updates, drivers and troubleshooting guides:

Visit the link below to connect with any of the following support options: online community support, phone support, email support.