What are the most common meeting room AV faults and fixes?
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The same eight to ten meeting room AV faults account for roughly 80% of helpdesk tickets across a typical UK office estate, and most of them have well-understood fixes that don't require a hardware swap. The pattern is rarely "the kit is broken"; it's almost always configuration, cabling, network or peripheral state.
| # | Symptom | Most common cause | Typical fix |
|---|---|---|---|
| 1 | Meeting won't auto-join, room not pre-populated | Calendar resource mailbox config (CalendarProcessing settings, AutoAccept) | Reconfigure the resource mailbox in Exchange / Microsoft 365 admin |
| 2 | One-way audio (we can hear them, they can't hear us) | USB hub power, mic muted at hardware level, mic table-top button toggled off | Power-cycle the room, check mic LED, replace passive USB hub with powered |
| 3 | Camera not detected by the room PC | USB cable flex at the connector, especially long ceiling runs | Replace with shielded active USB cable rated for the run length |
| 4 | Display shows source on screen but no audio | HDMI EDID handshake failure, audio routed to wrong output | Re-seat HDMI, force EDID via DSP / matrix, check Windows Sound output |
| 5 | Control panel "not connected" / blank | PoE switch port reset, network change, IP conflict | Confirm PoE on the port, check VLAN, re-cradle the panel |
| 6 | Echo / muffled audio on calls | AEC reference signal misconfigured, mic too close to a speaker | Run DSP autoCal, reposition ceiling mic, verify Q-SYS / Biamp AEC config |
| 7 | Wireless presentation drops mid-meeting | Network roaming between APs, Wi-Fi 6E radar interference (5GHz DFS) | Pin AirMedia / ClickShare to a stable AP, change channel away from DFS |
| 8 | Room "online" in monitoring but Teams app frozen | Windows update mid-rollout, MTR app version drift | Reboot, check firmware matrix compliance, defer non-validated Windows builds |
| 9 | Lights / blinds / shades not responding | Control system program lost connection to gateway (KNX, DALI, Lutron) | Restart control processor, check gateway power and IP |
| 10 | Booking panel shows wrong status | Resource calendar not syncing, sign-in token expired | Re-sign-in the panel against the room's resource account |
A few patterns worth noting. Anything labelled "intermittent" by users is almost always a USB cable, a flapping network port, or a peripheral that's losing power overnight. Anything that "started last Tuesday" is almost always a recent change: a Microsoft 365 update, an IT firewall change, an OEM firmware push. The first diagnostic question on any reactive ticket should be "what changed in the 24 to 72 hours before this started?"
Most of these fix remotely on a properly monitored room. See Strive AV's support service for the diagnostic process, or the platform-specific Microsoft Teams Rooms FAQ for MTR-only patterns.
Quick reference: auto-join (calendar config), one-way audio (USB power), camera not detected (cable flex), source-no-audio (HDMI EDID), panel disconnect (PoE / network), echo (AEC), wireless presentation drops (Wi-Fi roaming). 80% fix remotely. First question on any ticket: what changed in the last 24-72 hours?
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