LED wall maintenance: a practical checklist

Daily operation

Power the wall on and off through the processor or a scheduled controller rather than cutting mains power. Avoid static images at full brightness for many hours; use a screensaver or lower brightness when idle.

Cleaning

Remove dust with a soft, dry brush or an anti-static cloth, moving gently in one direction. Never spray liquid onto the modules. COB and GOB surfaces tolerate careful wiping; SMD surfaces should only be brushed.

Monthly checks

Display a full-white and a full-black test pattern to spot dead pixels, colour shifts or loose modules. Check that ventilation openings are clear and that cables and connectors are secure.

Yearly service

Once a year, inspect the structure and fixings, measure power supply voltages, update processor firmware and, if needed, run a seam and colour calibration. Outdoor screens also need a seal and drainage inspection after the rainy season.

Spare parts

Keep a small stock of modules, receiving cards and power supplies from the original batch. Replacing a front-serviceable module takes a few minutes with a magnetic tool and keeps colour uniform.