Kemppi Minarc Tig MLP Machine Parts FAQs
Spare circuit cards, switches, grills, cables and couplings for a TIG inverter welder, and how to work out the right one for your machine.
How do I work out which spare part my TIG welder needs?
Start with the rating plate on the machine. It shows the maker, the machine type and serial or traceability details, and usually the standard it was built to. Quote those exactly when you look for a part.
Then use the parts list or service section of the manual to find the position and part number of the item. If the old part is still in the machine, the number printed or labelled on it is the best match. Similar-looking parts often differ between versions or revisions of the same machine, so check the revision marking as well as the name. If you cannot confirm a match, ask our team before ordering.
What are the parts of an inverter TIG welder that most often need replacing?
Usually it is the parts that are handled, exposed to dust or moved: front panel switches and potentiometers, gas and cable couplings, cooling fans, rear grills and inlet rings, and internal ribbon cables and connectors. Electronic cards can also fail, but they are normally replaced only after the simpler causes have been ruled out.
Wear tends to show as intermittent controls, loose or leaking connections, a noisy or slow fan, cracked casings or overheating warnings. The cause depends on the machine and how it is used, so the manual's fault-finding section is the right starting point.
Can I fit a replacement circuit card myself?
Only if you are competent to work on electrical equipment and the maker's instructions allow it. A welding power source contains mains-connected parts and stored energy, and the HSE says people doing electrical work must be competent for the task. If you are not sure, have a competent person or the maker's service agent do it.
Before ordering, confirm the card is the correct type and revision for your machine, because a card that fits physically may still be wrong. Keep the old card until the machine is working properly again.
Why do I have to unplug the welder and wait before opening the case?
Opening a live or recently used machine is dangerous. HSE guidance says equipment should be made dead and proved dead before work starts, and that isolation should prevent anyone re-energising it by accident. Unplug the machine from the mains and keep the plug under your control while you work.
Inverter machines also contain capacitors that can hold a charge after switch-off. The waiting time and any discharge procedure depend on the machine, so follow the maker's service instructions. Do not assume a short wait is enough.