--- title: Troubleshooting Common Issues with Your CommBox Meeting Room Display Gen 2 description: Troubleshooting guide for the CommBox Meeting Room Display Gen 2 — fix power, image, audio, and remote control issues step by step. --- [Skip to content](https://support.commbox.com.au/knowledge/troubleshooting-common-issues-with-your-commbox-meeting-room-display-gen-2#main-content) English Show submenu for translations [Log a ticket](https://support.commbox.com.au/knowledge/kb-tickets/new?hsLang=en) [Customer portal](https://support.commbox.com.au/portal?hsLang=en) [![CBOX Final Logo RGB 02-1](https://support.commbox.com.au/hs-fs/hubfs/Logos/CBOX%20Final%20Logo%20RGB%2002-1.png?width=300&height=60&name=CBOX%20Final%20Logo%20RGB%2002-1.png)](https://www.commbox.com.au/) - [Knowledge Base](https://support.commbox.com.au/knowledge) - [System Status](https://commbox.betteruptime.com/) - [Training Hub](https://www.commbox.com.au/training-hub) - [My Tickets](https://support.commbox.com.au/portal) Open main navigation Close main navigation - [Knowledge Base](https://support.commbox.com.au/knowledge) - [System Status](https://commbox.betteruptime.com/) - [Training Hub](https://www.commbox.com.au/training-hub) - [My Tickets](https://support.commbox.com.au/portal) - English Show submenu for translations - [Log a ticket](https://support.commbox.com.au/knowledge/kb-tickets/new) - [Customer portal](https://support.commbox.com.au/portal) - [Book Training Now](https://www.commbox.com.au/book-training) [Book Training Now](https://www.commbox.com.au/book-training) How can we help you? - There are no suggestions because the search field is empty. 1. 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[Meeting Room Display Gen 2](https://support.commbox.com.au/knowledge/commbox-display?hsLang=en#meeting-room-display-gen-2) # Troubleshooting Common Issues with Your CommBox Meeting Room Display Gen 2 ## Step-by-step fixes for the most common problems with the CommBox Meeting Room Display Gen 2 — from no power and no image to audio issues and colour problems. **Applies To** CommBox Meeting Room Display Gen 2 — All models **Step-by-Step Instructions** Step 1: Fix Power Issues - Power light not coming on — check the power cable is firmly connected at both ends, confirm the power point is on, and check the rear power switch is in the ON position - Screen turns off unexpectedly — check that the vents are not blocked and the screen has adequate airflow; also check the No Signal Standby setting under Power On/Off Settings Step 2: Fix Image Issues - Power is on but no image — check the correct input source is selected (press SOURCE on the remote); confirm the video cable is firmly connected; ensure the connected device is turned on and sending a signal - Image is jerking, flickering, or showing ripples — this is usually electrical interference; try turning off nearby devices such as lamps or fans, or move the screen away from them - Screen too dim or too bright — go to MENU \> Image Settings \> Custom and adjust the Brightness slider - Image distorted or stretched — go to MENU \> Image Settings \> Advanced Image Mode \> Aspect Ratio and select 16:9 - Colours look incorrect or washed out — go to MENU \> Image Settings \> Custom and check Saturation, Hue, and Colour Temperature; or try Standard mode Step 3: Fix Audio Issues - No sound — check the screen is not muted (press Mute on the remote); turn up the volume using Vol+; if using HDMI or USB-C, confirm your device's audio output is set to the external screen - Sound is distorted or too quiet — try a different Sound Mode under Audio Settings; check that the Audio Out cable is securely connected to your external speakers Step 4: Fix Remote Control Issues - Remote not responding — replace the AAA batteries; ensure a clear line of sight to the IR sensor on the front of the screen - Remote buttons locked — use the physical buttons on the screen to go to MENU \> Other Settings \> Remote Lock and turn it off 💡 Tip: If you have tried all of the above and the screen is still not working as expected, a factory reset will restore all settings to their defaults. 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