Absen KLCOB V2 Series troubleshooting

Common KLCOB V2 Series 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.

• A module goes fully dark after transport, vibration, or a bump

  Likely cause: Flip-chip COB relies on tiny solder connection points; shock/vibration breaks the current path and the module (or lamp group) goes dark until the joint is remade or the module is replaced.

  Step-by-step fixGet the fix →

• Cabinet running hot, dimming, or color-shifting under sustained high brightness

  Likely cause: LED brightness and color track junction temperature; staying in spec plus COEX thermal correction keeps output uniform, and heat above the operating range accelerates COB failure.

  Step-by-step fixGet the fix →

• Dark blotch or dead area after moving cold panels into a warm/humid room (condensation)

  Likely cause: Condensation on/inside a cold COB panel bridges fine connections; acclimating and low-brightness warm-up evaporates moisture without thermally shocking a wet, energized board.

  Step-by-step fixGet the fix →

• Dead/dark individual pixels or small dark dots on the COB surface

  Likely cause: COB seals the die in resin, so localized rework is not possible; module-level front swap plus reloading the optical-correction file is the only clean repair and preserves seamless calibration.

  Step-by-step fixGet the fix →

• Need to update receiving-card firmware or load a new cabinet configuration

  Likely cause: The KLCOB V2 has no standalone product firmware version — it is driven by NovaStar COEX cards whose firmware ships inside the .ncp and is updated via NovaLCT; using the cloud/NCP path guarantees a compatible package.

  Step-by-step fixGet the fix →

• On-camera flicker, scan lines, or tearing (broadcast / xR / virtual production)

  Likely cause: Camera flicker is a refresh-vs-shutter beat; 3840 Hz refresh plus COEX shutter fit/phase offset/frame multiplication and genlock align the panel scan to the camera, removing scan bands and tearing.

  Step-by-step fixGet the fix →

• Stacking / rigging KLCOB V2 cabinets for a fixed install

  Likely cause: Exceeding the 20-cabinet stack limit or under-rating the structure risks mechanical failure of a fixed-install wall; the WLL/structure sign-off must come from qualified personnel, not field improvisation.

  Step-by-step fixGet the fix →

• Visible brightness/color mismatch or seams between adjacent cabinets or modules

  Likely cause: COEX bakes per-cabinet optical correction into the .ncp; a missing or wrong file removes the factory uniformity data, which is exactly what shows up as bright/dark cabinets and visible seams.

  Step-by-step fixGet the fix →

• Whole panel/cabinet dark or no image on one or more cabinets

  Likely cause: KLCOB V2 cabinets run on NovaStar COEX receiving cards in a daisy-chained data/power topology; the first failed link blackens all downstream cabinets, so isolating the break in the chain restores the group.

  Step-by-step fixGet the fix →

• Wrong resolution, offset image, or garbled/mirrored mapping across the wall

  Likely cause: Garbled or offset output is a mapping problem: the controller must know each cabinets pixel count and the physical daisy-chain order; sending and saving the correct topology fixes it.

  Step-by-step fixGet the fix →

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.

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