If you're encountering problems where none of the external monitors connected to your TESmart KVM switch are displaying (showing a black screen), we suggest trying the following troubleshooting steps. If the issue persists, please reach out to the TESmart Customer Service Center for further assistance. You can contact us through the chat window at the lower right or by submitting feedback. Our dedicated team of professionals is ready to help and provide after-sales support.
Applicable product models: Dual/Triple Monitor KVM Switch
This article includes the following topics:
- Input and output issues, docking station compatibility, and cable problems
- Check for monitor recognition issues
- Docking station/adapter issues
- Resolution of the monitor
- Final cross-experimentation method
We provide detailed troubleshooting steps below for the situation where all monitors display black screens. Please refer to the following suggestions for assistance:
Input and output issues, docking station compatibility, and cable problems:
Please try connecting the problematic monitor directly to the computer (bypassing the KVM) and check if the issue persists. If the monitor still doesn't work, it suggests that the problem may lie with the source, monitor, cable, or docking station. It's important to keep the original cable or connected converter unchanged during this testing process.
Check for monitor recognition issues:
If the correct monitor name cannot be identified, it indicates a connection problem with the product. We recommend reaching out to TESmart customer support directly.
Note: Steps to check display recognition:
"Settings" -> "System" -> "Display" -> "Advanced Display Settings" -> then click on the drop-down arrow symbol. Providing a screenshot of this page would be very helpful.
Docking station/adapter issues:
Have you used any adapters or docking stations to connect the computer and monitors to the KVM switch? If so, check the signal direction of the adapters or try using a different adapter. The correct signal transfer direction is from the computer to the KVM switch and then to the monitor. For example, if the input source port is USB-C and the KVM port is HDMI, the appropriate converter to use is USB-C to HDMI, not HDMI to USB-C.(If all external monitors can display normally when directly connected (bypassing the KVM switch), please proceed to the next troubleshooting step.)
For more information on docking stations, click on the docking station
Resolution of the monitor:
For more information on the resolution of the monitor, click on the resolution of the monitor