Troubleshooting a Megapixel HELIOS LED wall
Chosen for high-end projects, broadcast and virtual production, the Megapixel ecosystem (HELIOS processors, NanoSync synchronization) distributes the signal over IP. Faults are diagnosed like a network: links, latency, synchronization.
A wall segment drops out
- Open the processor interface and identify the failing links: the topology shows where the chain breaks.
- Swap the affected link (fibre, SFP, RJ45) with a known-good one to isolate cable, optic or port.
- Check intermediate switches where present: a port renegotiated to a lower speed creates intermittent artefacts.
- Check the affected panel group's power before blaming data.
Synchronization and capture
On set, lock the processor and cameras to the same reference; NanoSync distributes precise synchronization where traditional genlock no longer suffices (multi-processor, mixed rates).
Tearing-like artefacts between zones driven by different outputs signal a missing reference or inconsistent rates between outputs.
For heavy formats (ST 2110, high frame rates), validate the whole chain at the shoot's real rate before the day: a link that holds at 25p can drop at 50p.
Frequent issues and related guides
Lines on camera despite flawless hardware: capture settings — camera flicker guide.
Mute panel or group: the boundary method applied to IP links — dark area guide.
Uniformity after panel swaps: calibration — colour and calibration guide.
A failure right now? Lédia, our AI engineer, guides you step by step, 24/7, photos included.
Talk to LédiaSee pricingFrequently asked questions
The interface shows a link « up » but the area is black — how to decide?
An active link does not guarantee application data: physically swap the link with a healthy segment. If the fault follows the link, cable or SFP; if it stays, look at the panel side (power, card).
Does NanoSync replace genlock?
It complements and extends it: high-precision reference distribution at scale. Cameras still lock to the house reference distributed on set.
What to check before a high-frame-rate shoot?
The whole chain at the real rate: media server outputs, processor, links, and panels at a refresh suited to tight shots. A two-minute filmed test avoids a day of reshoots.
Is Lédia useful on such a high-end ecosystem?
Yes: she structures the diagnosis (IP chain, sync, calibration) and prepares a complete file for escalation if a manufacturer intervention is needed.