--- title: Clocking errors reported or clicks & pops heard with Symphony I/O Mk 2 Dante description: Learn how to troubleshoot clocking errors with the Dante configuration of Symphony I/O Mk 2. --- [Skip to content](https://knowledge.apogeedigital.com/symphony-i/o-dante-clocking-errors-reported-or-clicks-pops-heard#main-content) English Show submenu for translations [Contact us](https://knowledge.apogeedigital.com/kb-tickets/new?hsLang=en) ![Apogee Logo White.png\]](https://knowledge.apogeedigital.com/hs-fs/hubfs/Apogee%20Logo%20White.png?height=40&name=Apogee%20Logo%20White.png) Open main navigation Close main navigation - English Show submenu for translations - [Contact us](https://knowledge.apogeedigital.com/kb-tickets/new) - Go to apogeedigital.com Go to apogeedigital.com How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://knowledge.apogeedigital.com/?hsLang=en) 2. [Symphony I/O Mk 2](https://knowledge.apogeedigital.com/symphony-i-o-mk-2?hsLang=en) 3. [Troubleshooting](https://knowledge.apogeedigital.com/symphony-i-o-mk-2?hsLang=en#troubleshooting) # Clocking errors reported or clicks & pops heard with Symphony I/O Mk 2 Dante If Symphony I/O is not working correctly with Dante, the most common causes are a misconfigured clock source or sample rate, a faulty network switch, or a unit that needs to be reset. Follow the steps below in order to diagnose and resolve the issue. How do you configure the clock source and sample rate for Symphony I/O? Check the clock source and sample rate configuration of Symphony I/O as described in the KnowledgeBase article below. Carefully verify the **Enable Sync to External** box as described in the document; if the clock source is **Dante Network**, the box should be unchecked; if the clock source is **Internal** or any external source, the box should be checked. [Symphony I/O Dante Clock Source & Sample Rate Configuration](https://knowledge.apogeedigital.com/symphony-i/o-mk2-dante-clock-source-sample-rate-configuration?hsLang=en)  #### Check Your Network Switch 1. Check that all Ethernet cables are firmly connected at both the Symphony I/O and network switch ends. 2. Ensure the network switch is not an `Energy Efficient Ethernet` (`EEE`) or `Green` switch. If the switch includes these features, consult the switch documentation to determine whether they can be disabled. #### How Do I Reset the Symphony I/O MkII? #### Reset while powering on the unit 1. Start with Symphony I/O Mk II powered off. 2. Press and hold the **Control** knob. 3. While still holding the Control knob, press the front panel **Power** button to power the unit on. 4. Keep holding the Control knob until the startup screen finishes. #### Reset from the touchscreen 1. With the unit powered on, tap the **gear** icon in the bottom right-hand corner of the touchscreen to open the setup pages. 2. Tap the **Setup** tab. 3. Tap **Reset Unit** in the lower left-hand corner of the screen. 4. 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