On this page, you will find tips on solving minor problems with MMA welding equipment. Many issues, such as lack of power, connection problems, or incorrect settings, can be repaired independently without the need to send the device to a service center, which will save you time and costs.
Before starting the repair, make sure you have read the device's instruction manual, understand the manufacturer's safety recommendations, and have the necessary tools and repair skills.
Symptoms | Cause | Action |
---|---|---|
No power, malfunction signal or improper device operation | No connection or loose plug inside the device | Remove the housing, check and correct the connections of all electrical plugs inside the device |
The arc does not ignite | Improper contact of welding cable clamps or ground clamp | Adjust the contacts of welding cables and ground clamp |
After powering on, the power indicator light does not light up | No power supply voltage | Check the fuses at the power supply connection |
The overheating indicator light is on | The device has overheated. | Wait a few minutes until the light goes off and continue welding. |
The fan does not work | The fan is blocked by a bent cover | Straighten the fan cover |
Unsatisfactory weld quality when using the MMA method, electrode sticks to the welded material | Improper polarity of welding cable connections | Connect the welding cables correctly |
Moist electrode. | Replace the electrode | |
The welder is powered by a generator or through a long extension cord with a cable cross-section that is too small | Connect the device directly to the power supply network | |
Unsatisfactory weld quality when using the TIG method | Improper or poor quality materials or consumables used | Replace consumables. Change tungsten electrode or gas cylinder to materials of higher quality |
Improper flow of shielding gas | Check if the shielding gas flows with the appropriate intensity | |
Improper shielding gas pressure | Check the bottle reducer. Check the gas supply hose, improve the hose connections and the condition of the quick connectors |