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ZonePro Fuse Replacement

Technical Support Guide

Written by Guillermo Gutierrez

Updated at April 13th, 2026

Table of Contents

Brand: Models: Overview: Instructions:

Brand:

  • dbx

Models:

  • ZonePro 640/640M
  • ZonePro 641/641M
  • ZonePro 1260/1260M
  • ZonePro 1261/1261M

Overview:

The fuse on a dbx ZonePro should be replaced if the unit does not power on while connected to a confirmed working power source.  When replacing the fuse, it is critical to use the exact same type and rating—T 4A, 250V (high‑breaking capacity)—to prevent damage to the unit or potential safety hazards.


Instructions:

  1. Unplug the power cord from the wall outlet and the unit.
     
  2. Locate the Fuse Holder under the IEC power connector on the back of the unit.
     


 

  1. Use a small flat-head screwdriver to gently pry the drawer open.
     


 

NOTE:

A replacement fuse is located in a compartment on the fuse holder. 

 

 

  1. Remove the old fuse and insert a new replacement.  
    Fuse specifications: T 4A, H 250V.


     
  2. Push the drawer back into the unit until it snaps into place.

 

NOTE: 

If the fuse blows again, this indicates a potential fault in the power supply, and will require evaluation from an Authorized Service Center.

HARMAN Authorized Service Centers

You can also contact our Harman Pro Service Department by calling 844-776-4899 Option 2 or Email: hproserviceusa@harman.com

 

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Table of Contents

Brand: Models: Overview: Instructions:

Related Articles

  • Adjusting the Screen Contrast on the ZonePro
  • Connecting Directly to the ZonePro using Ethernet
  • Factory Default IP Settings on the ZonePro
  • Factory Default Serial Port Settings on the ZonePro
  • LCD Screen is Unreadable on ZonePRO Units

Related Articles

  • Adjusting the Screen Contrast on the ZonePro
  • Connecting Directly to the ZonePro using Ethernet
  • Factory Default IP Settings on the ZonePro
  • Factory Default Serial Port Settings on the ZonePro
  • LCD Screen is Unreadable on ZonePRO Units
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