Audio
QSC Q-SYS Core troubleshooting
The QSC Q-SYS Core problems live-event techs bring to Ask Roadie most (also called Core 110f, Core 510i, Core 8 Flex, Core Nano). Pick your symptom, or describe your own in plain words, and get the likeliest fix first, with the manual page when there is one.
Common Q-SYS Core errors & problems
What techs run into most, and what's usually behind it. The step-by-step fix for your exact unit is in Ask Roadie.
- Step-by-step fixGet the fix →
AES67 streams drop out / PTP clock mismatch when multiple Cores are on a corporate network
Likely cause: AES67 relies on a single agreed PTP grandmaster; uncontrolled auto-election on a shared LAN causes clock mismatches and dropouts.
- Step-by-step fixGet the fix →
Can't find the Core on the network / don't know its IP address
Likely cause: Default DHCP/link-local means the address is unknown until read; the front panel and Configurator are the two supported ways to discover it without guessing.
- Step-by-step fixGet the fix →
Clock Sync Error status on the Core
Likely cause: A Clock Sync Error is a symptom of PTP grandmaster contention or a network that isn't prioritizing clock packets; fixing election and QoS restores lock.
- Step-by-step fixGet the fix →
Core 510i (or other Integrated Core) won't take a design / behaves as an I/O peripheral
Likely cause: Integrated Cores double as I/O frames; in Peripheral Mode the processor is intentionally disabled, so the mode setting — not a fault — is why it won't run a design.
- Step-by-step fixGet the fix →
Core firmware / Q-SYS Designer version mismatch when pushing a design
Likely cause: QDS bundles the matching Core firmware and flashes it on deploy, so keeping Designer current — and checking model support/upgrade path — prevents deploy failures and known-bug exposure.
- Step-by-step fixGet the fix →
Core or device shows a status of Fault, Missing, Not Present, Compromised, or Initializing — what does it mean?
Likely cause: These are the defined Q-SYS device status states; knowing which are benign (Not Present, Initializing) versus actionable (Fault, Missing, Compromised) tells a tech whether to intervene.
- Step-by-step fixGet the fix →
Intermittent audio/video dropouts across the Q-SYS network
Likely cause: Q-SYS carries a real-time sample clock over the LAN; if the switch doesn't give clock and audio strict priority, jitter/late packets cause dropouts.
- Step-by-step fixGet the fix →
Need to factory reset a Core / locked out by an Access Control password
Likely cause: The reset clears the stored access password and network overrides, which is the manufacturer's sanctioned lockout recovery — no backdoor password exists.
- Step-by-step fixGet the fix →
Persistent file sync fault between redundant (primary/backup) Cores when using audio/media files
Likely cause: Redundant Cores mirror media between them; a filename the file system can't replicate stalls the whole sync and reports a persistent fault until it's removed/renamed.
- Step-by-step fixGet the fix →
Setting up network redundancy — how LAN A / LAN B failover works
Likely cause: Because both paths carry live traffic in parallel (not active/standby), loss of one network is seamless — there is no reconvergence delay.
Not on the list? Describe it your way, or paste the error code off the display. Ask Roadie works the problem with you until it's fixed or you have a clear next move.
How Ask Roadie helps with the Q-SYS Core
- 1. Pick the QSC Q-SYS Core. It's already in the list.
- 2. Describe what you're seeing. In your own words, or the error code off the screen.
- 3. Get the likeliest fix first. Steps in order, the manual page when there is one, and a note when other techs have confirmed it.
- 4. Still broken? Tap 👎 and it keeps going from where you left off.