Shenzhen Mastarled Co., Ltd · Shenzhen, China [email protected] +86-755-8652 6281
How an LED Screen Is Made From SMT to Ageing Test
Process Guide

How an LED Screen Is Made From SMT to Ageing Test

Inside MASTARLED’s production process: SMT, reflow soldering, module ageing, auto drying, full screen testing, and pre-shipment review. All steps ensure reliability before shipment.

SMT Line to Final Test: A Step-by-Step Process

The journey from raw components to a ready-to-ship LED screen begins at the SMT auto line, where high speed SMT machines place components onto PCBs with precision. After placement, the boards go through reflow soldering to secure all connections, followed by soldering inspection to verify joint quality.

Module Quality Control Before Assembly

Before modules are built into cabinets, each one undergoes a module ageing test to detect early failures. An auto drying system removes moisture from the modules to prevent defects during soldering and improve long-term reliability.

See the Indoor Fixed With High Definition specification for the figures quoted above.

Assembly and Full System Testing

Modules are assembled on the full-screen line, where the entire screen is installed and tested for image uniformity, brightness, and pixel integrity. After installation, the screen goes through a full ageing test under controlled conditions to simulate real-world use.

Pre-Shipment Review and Final Check

Before shipping, every screen is reviewed in the in-house showroom. This allows buyers to inspect the display in person, confirm colour accuracy, and verify the final configuration before the container is sealed.

In-House Teams Ensure Process Control

MASTARLED maintains in-house R&D, PMC and QC teams. This allows direct oversight of every stage, from design to delivery, ensuring consistency and adherence to internal quality standards without third-party dependency.

Why This Process Matters for Buyers

Each step reduces the risk of field failures. SMT precision and soldering inspection prevent early short circuits. Module ageing and auto drying reduce moisture-related defects. Full screen testing ensures no dead pixels or brightness mismatches arrive at the job site.

Questions Buyers Ask

Questions on This Topic

What happens during the module ageing test?

Each module is powered on and tested under controlled conditions to detect early failures before assembly into cabinets.

Why is auto drying used before assembly?

To remove moisture from modules, which prevents soldering defects and improves long-term reliability in the field.

Is the screen tested before it leaves the factory?

Yes. Every screen undergoes a full installation test and a screen ageing test before shipment.

Can buyers see the screen before it ships?

Yes. The in-house showroom allows pre-shipment review of the complete screen for colour, brightness, and image quality.

Do you use third-party testers for quality checks?

No. All testing and inspection are done in-house by MASTARLED’s QC team.

Apply This to Your Own Project

Send the wall dimensions and the closest viewing distance and we will turn this guidance into a specific cabinet layout.