I guess it is dirt inside. Open it and clean the machine with compressed air.
Disconnected the flat cable that goes from the front panel to the mainboard and plug it back in.
You would have to open the machine and check if a specific connector went off. I had this once
But I guess the display is still lit up. Or does the display get dark?
If you switch ON the machine can you hear a silent "Click" from a relay inside. It should be hearable after ca. 1-2 seconds...
This card is the input filter card (Z002) and has the spare part number 4281470. Unfortunately now in 2022 it is not available anymore at Kemppi.
They might have 1 or 2 pcs in stock. You have to find a Kemppi dealer who then requests if Kemppi has still stock.
This card is normally not so...
Nobody has one.
Kemppi does not even give the circuit diagrams to the official Service workshops.
Can you tell me what problem you face and why you think it is the control card?
This can apparently happen when a gun regulator RMT 10 is assembled to the torch but not activated by jumper 5 on the control card of wire feeder
Dpo you use a gun regulator?
If so you should set the jumper on the control card of the wire feeder unit. There are 10 pumpers all in 1 row. Jumper...
I know, it is already 2 years ago. but I still answer back.
This error happens sometimes. The problem is mostly that the connection between the mainboard and the so called control card underneath the mainboard is somehow not reliable. There goes a 16 pin flat cable between the mainboard and this...
If a card is a problem then it is the upper one (called A002). I case the workshop wants to replace it they should not charge 240 just for labour.
My advice: try the following (in case nothing serios is wrong with the PCBs): open the machine. Clean it with compressed air. Dis- and reconnect the...
I remember seeing the same thing: those 6 burned resistors. I measured them. They were still ok. And also the machine did not show any wrong behaviour. But I think the advice of wilbur sounds very good: replacing them by wired devices. And maybe only one big resistor instead of 3 parallel. But...
If you had a picture it would be good. You write anount "PCB". As far as know there are 3-4 PCBs in machines of that size. If you measure 200V this is strange. MLS 4000 must be a 3 phase machine. Check the voltage between all of the 3 phases coming from the socket of the wall to the machine...
When you weld aand it does this cut out, check the amps on the display. If it goes up to 190...200A the machine is at its limit. The machine's electronics cuts the powr output I assume in order not destroy itself. The power which is needed would be maybe 220A. And if the machine would do so the...
Wow.... are those the prices in Great Britain. In Cyprus they would kill me. For 220 Pounds they can installa a complete new torch. And then it is even too much !!!!
From my experience a broken liner can block the gas. This blocks this white/crystal hose
where the liner (and the gas) goes through.
Also interesting to know would be: how does it look inside the torch handle. Sometimes this white hose
which carries the gas cracks simply off inside the torch...
Hi
Quite a troubled repair history. Is the problem still valid ? Would like to help you (if I can)!!
I repaired Kemppi MinarcMIG machines many, many times.
My guess is that the so called polarity screw sitting in the heatsink for the output rectifier (tthe heatsink at the front of the machine)...
Check the 2 big diodes next to this glass fuse? check if they (or at least 1 of them) is short circuited. You need a multimeter which can test diodes. Or if you have a simple continuity tester check if those diodes are short circuited. If so replace them. If you are not familiar with it I can do...