How to Replace the U1 Display Board on Megmeet Artsen Series Welders？
Modern industrial welding machines are designed for durability, precision, and smart control — and the Megmeet Artsen series exemplifies all three. Engineered with waterproof, dustproof, and anti-collision protection, the Artsen series is built to withstand harsh workshop conditions while maintaining stable welding performance.
However, this robust structure also makes component replacement and internal maintenance slightly more complex. When the U1 display board—a key control interface component—needs to be replaced, technicians must follow a precise, multi-step process to ensure the machine’s structural integrity and functionality remain uncompromised.
This article provides a comprehensive, step-by-step guide to performing a Megmeet Artsen display board replacement safely and correctly. You’ll also learn best practices for welding machine maintenance, display board troubleshooting, and tips to preserve your waterproof welding machine design after servicing.
I. Why the U1 Display Board Is Important?
The U1 display board serves as the central user interface for the Megmeet Artsen series. It allows operators to:
View welding parameters such as current, voltage, and mode
Adjust output settings and fine-tune process control
Communicate with internal control systems through power and signal cables
When the display board malfunctions—due to electrical damage, prolonged usage, or accidental impact—replacing it is crucial to restoring accurate control and machine responsiveness. Performing the replacement correctly also ensures operational safety and maintains system waterproof integrity.
II. Safety and Preparation Before Maintenance
Before starting any internal repair or replacement, take time to prepare properly. A structured approach helps prevent damage to sensitive components.
1) Safety Precautions:
Power off the welding machine and disconnect it from all power sources.
Wait several minutes to ensure internal capacitors discharge completely.
Use protective gloves and anti-static wrist straps to prevent static electricity from damaging electronic parts.
Place the machine on a stable, flat surface for disassembly.
2) Tools You Will Need:
Phillips screwdriver
Flat-head screwdriver
Anti-static gloves or wrist strap
Clean cloth and brush (for dust removal)
Screw containers or labeled trays to keep screws organized
These simple preparations will help streamline your Megmeet Artsen display board replacement and prevent unnecessary downtime.
III. Step-by-Step Procedure: Replacing the U1 Display Board
Let’s go through each step carefully. This procedure applies to most Megmeet Artsen series models that share the same display and enclosure design.
Step 1: Remove the Lifting Rings
Start from the top of the welding machine.
Locate the two lifting rings fixed to the top cover.
Use the appropriate screwdriver or wrench to remove both rings.
These must be detached first to access the screws hidden beneath the top cover.
Removing these lifting rings also prevents them from obstructing later disassembly steps.
Step 2: Detach the Top Cover
The top cover is secured with multiple screws for waterproof and anti-collision protection.
Remove the following screws in order:
Three fixing screws on the right side of the top cover
Three fixing screws on the left side
Two fixing screws on the rear side
Once all screws are removed, gently lift the top cover upward.
Handle it carefully to avoid scratching or bending the sealing surfaces, as this could compromise the waterproof structure.
Step 3: Remove the Side Covers
The next step is to access the machine’s interior by removing both side panels.
Unscrew five fixing screws on the right side cover.
Unscrew five fixing screws on the left side cover.
After removing all screws, lift off each side cover and place them on a clean surface.
These side panels protect the internal modules and cooling channels, so keep them free of dust or debris for reinstallation.
Step 4: Detach the Front Cover
The front cover shields the display board and control components.
Follow these steps:
Remove the three visible screws securing the front cover.
As shown in the instructional video, check for additional screws located around the display area and lower front frame.
Carefully pull the front cover forward, releasing the clips that hold it in place.
You should now have a clear view of the internal wiring connected to the display board.
Step 5: Disconnect the Cables
Before removing the display board, disconnect all electrical connectors linked to it:
Communication cable — transmits data between the control board and display interface.
Power cable — provides power supply to the display board.
Grip each connector by its plastic housing, not by the wire, to avoid damage.
Once disconnected, gently move the cables aside.
Step 6: Remove the Display Knob and Mounting Screws
To free the U1 display board from the front cover:
Remove the right control knob by pulling it outward gently.
Use a screwdriver to remove all fixing screws holding the display board in place.
There are eight fixing screws in total. Remove them one by one and store them securely.
Once all screws are removed, you can lift the display board assembly away from the front cover.
Step 7: Take Out the U1 Display Board
The U1 display board is now fully accessible.
Carefully lift it out of the housing, ensuring no cables or connectors are caught underneath.
This completes the display board removal process.
Inspect the old board for signs of burn marks, corrosion, or damaged connectors—these are common failure points in high-temperature industrial environments.
IV. Installing the New Display Board
To install the new U1 display board, simply reverse the disassembly steps.
Follow these recommendations to ensure a secure installation and system reliability.
Step 1: Position the New Board
Align the new display board with the mounting holes on the front cover. Make sure the connectors and knob positions match the original alignment.
Step 2: Tighten the Fixing Screws
Secure the display board using the eight fixing screws removed earlier. Tighten evenly to prevent warping, but avoid overtightening, which could damage the circuit board.
Step 3: Reconnect the Cables
Plug in the communication and power cables carefully. Verify the connectors are seated firmly but without forcing them.
Step 4: Reassemble the Covers
Reattach the:
Front cover
Left and right side covers
Top cover and lifting rings
Tighten all screws in the reverse order of disassembly. Ensuring a snug fit is critical for maintaining waterproof and dustproof performance.
Step 5: Test the Display Board
After reassembly:
Reconnect the power supply.
Turn on the machine.
Check if the display lights up and responds to input.
If the screen works properly and all controls function normally, the replacement is successful.
V. Display Board Troubleshooting Tips
If the display board fails to power up or respond after replacement, check the following:
Cable connections: Ensure the power and signal cables are fully inserted.
Connector pins: Look for bent or damaged pins on the board connectors.
Screw tightness: Loose mounting screws can cause grounding issues.
Firmware mismatch: In rare cases, confirm that the replacement board version matches the machine control firmware.
Following these checks usually resolves post-installation issues without additional repair.
VI. Understanding the Waterproof Welding Machine Design
The Megmeet Artsen series uses a waterproof welding machine design that requires extra care during maintenance.
Its enclosure structure includes:
Sealed covers and gaskets to prevent water and dust ingress
Shock-resistant mounting frames for anti-collision protection
Reinforced panel design that protects sensitive electronics during transport or operation
When performing maintenance or display board replacement, it’s essential to:
Avoid damaging rubber seals or O-rings.
Ensure all screws are tightened uniformly to restore seal compression.
Keep all contact surfaces clean before reassembly.
Proper reassembly ensures that the machine maintains its original IP protection level, which is vital for performance and safety in industrial environments.
VII. Importance of Preventive Maintenance
Regular welding machine maintenance can greatly reduce the likelihood of display board failure. Here are some tips:
Keep the ventilation paths clean: Dust accumulation can trap heat and shorten electronic lifespan.
Check connections regularly: Loose connections can cause intermittent display flickering or failure.
Avoid moisture exposure: Even with waterproof design, long-term exposure to humidity may affect connectors.
Inspect control knobs and buttons: Physical damage can cause display signal loss.
Performing preventive maintenance every few months helps ensure long-term reliability and reduces downtime in production lines.
Conclusion
Replacing the U1 display board on a Megmeet Artsen series welding machine is a straightforward but precise process that demands attention to detail.
By following the correct sequence—removing the lifting rings, unscrewing the top and side covers, disconnecting cables, and carefully installing the new board—you can restore full display functionality while preserving the machine’s waterproof and anti-collision structure.
Understanding your machine’s internal design and following preventive maintenance routines will ensure long-lasting reliability and performance stability.
For more product information, technical resources, and maintenance videos, visit the official Megmeet Welding Technology website: https://www.megmeet-welding.com/en
