Fixes for the most common Yealink MVC S90 problems, from the quickest checks to when to contact Yealink. Start at the top: most issues are a setting, a cable or firmware.
Quick checks
- Restart the device: unplug power for 30 seconds, then reconnect.
- Reconnect the cables, using the ones that came in the box.
- Update the firmware. How
No picture on the room display
- Check the HDMI cable from the MVC S90 to the display, and that the display is on the right input.
- Restart the MVC S90 from its settings, or by removing power for 30 seconds.
- Check the camera isn't covered by a privacy shutter.
- Update the firmware.
Picture is blurry, dark or badly framed
- Clean the lens with a dry microfiber cloth.
- Make sure auto-framing or speaker tracking is turned on in Yealink's app or the device settings.
- Light faces from the front; avoid a bright window behind people.
- Check the camera is at roughly eye level and centered on the room.
No sound or people can't hear you
- Check the device isn't muted (look for a red mute light).
- Check the volume on the device.
- Move laptops and their fans away from the microphones.
Echo or feedback
- Make sure only one microphone and one speaker are active in the room: mute laptops that also joined the meeting.
- Don't run the room's audio through both the device and the TV speakers at the same time.
- Hard, bare rooms reflect sound. Rugs, curtains or acoustic panels reduce echo a lot.
- Update firmware: echo cancellation improvements often come in updates.
Keeps disconnecting or drops out
- Use wired Ethernet rather than Wi-Fi, and check the switch port for errors.
- Update firmware.
Won't turn on or status light is red/blinking
- Check the power adapter is the original one and firmly connected, and try another outlet.
- Unplug for 30 seconds and power it back on.
- Check the status light meaning in the user guide; a blinking light during startup or updates is often normal.
- If it never finishes starting, contact the manufacturer's support for a recovery.
When to contact Yealink
If none of this works, the device may need warranty service (Yealink warranty: 24 months for Teams Room Systems, Collaboration Bars, BYOD kits, USB room cameras, VC room systems, Zoom Room kits and Meeting Boards; 24 months for personal speakerphones/headsets/USB cameras; 12 months for SIP and Teams desk/conference phones). Open a case on Yealink support. Bought from us? Contact us and we'll help with the claim.
More MVC S90 guides
- MVC S90 buyer's guide: specs and price
- MVC S90: setup guide
- MVC S90: mounting and placement
- MVC S90: Teams, Zoom and Google Meet
- MVC S90: what room size it covers
- MVC S90: price and total room cost
- MVC S90: full specs
- MVC S90: alternatives compared
- MVC S90: accessories
- All Yealink room kits compared
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