Fantasy JET III TIG AC / DC 200 3in1 WELDER PLASMA PFC IGBT

[OscuKoo]

Heres few pictures of my fried frend. Other parts could be changed but that IC1 markings have been grinded away.

 

[eddie49]

Hmm, that's a tough one...visually,it is not an obvious high voltage or high power circuit.
Do you know what was plugged in to the white 2-pin connector near IC1 ?

 

[bc30se]

I bought my unit from FACHOWIEC and they are a direct importer here and first to go to if there are problems, these units are still being sold:

https://fachowiec.com/sklep/pl/prod..._ac_dc_200_igbt_welder_fantasy+_uchwyt_parker

so the repair must be achievable, if you wish, PM me, you will give me the details, board version etc, I can call them and ask whether they prefer to have a complete machine for service or will just provide needed parts.

PS. mine is still going strong...

 

[OscuKoo]

Fachowiec didn´t answer at all. So it´s time to order new mosfet and other parts and try to repair. Hopefully IC1 is still fine, there seems to been arc too.

Have to check where that two pin connector near IC1 goes to.

There is no more markings or details on that board than that in picture. Machine is JLT AC-DC 210 P.

 

[OscuKoo]

Does anyone know where I could find working pcb board to replace this one?

This same board is used also in two knob version of everlast 210EXT and many other digital AC DC TIG welders.

Or could some one who has same type board "AC DC 320WH" in machine to look those resistors values next IC1 near CN2?

 

[RolandWeld]

Hello,

I have to dig up this pretty old thread, but I also have a problem with this JLT TIG welder (JLT AC/DC TIG-210) (also sold as "Fantasy Jet"). I haven't used the welder for a while and after I powered it on a few days ago, some capacitors on the power supply PCB blewed up with a bang. The display of the welder was still on and unfortunately, I haven't powered off the welder immediately. A few seconds later the device was dark.

I was able to replace the capacitors and a blown diode, but the problem is that one transformer was also damaged, because a blown capacitor on the secondary side got short-circuited.

The problem is, that this seems to be a very special transformer which isn't available seperately - I believe there is a winding ratio printed on it (14:38:38:14) that I couldn't find anywhere on the net. I also already asked the dealer from which I bought the device about 10 years ago, but unfortunately they could no longer supply spare parts for it. I also asked the known Polish distributors like FACHOWIEC and spaw-serwiscz - they both told me, that they can't deliver spare parts.

It would be a pity to dispose this welder, because of one damaged part - I was generally quite happy with the functionality of this device. So - does anybody know a solution or a source where I can buy such a transformer or (better) a complete replacement PCB? Maybe somebody owns such a welder or PCB with another fault and would sell the PCB as spare part!?

BR
Roland

 

[eddie49]

Hallo und herzlich willkommen im Forum !

From the way that the problem on your machine occurred after a period of non-use, it sounds like the insulating aluminium oxide film in the electrolytic capacitors deteriorated, causing a short-circuit.
There is a discussion on the need for gradual reforming of unused capacitors in post #30 onwards of this thread

Blown my welder up.

There appear to be three large bolted connections, for zero, plus, and minus outputs. I think this is mains in via a MOV to the AC side of the diods, the other connection can be seen in the above shot.

www.mig-welding.co.uk

and post #3 of this thread:

Smoothing caps advice please

I want to experiment further with my Topmig 150 by fitting capacitance between transformer and choke as the better welders have. I have 12 of these caps which are 4700uF and 63v but not sure about the other specs and if they would be suitable. I would like to connect all 12 in parallel for a...

www.mig-welding.co.uk

Usually the capacitors are fed by the DC bus as soon as the machine is switched on, before welding starts, and so they can begin to reform. How soon after you switched your machine on did the fault occur, and had you already tried to weld by then?

How many windings are on the transformer? Have you removed it from the board and confirmed that the windings are open-circuit?

The Chinese website Alibaba lists many electronic components and complete PCBs used in the "generic" inverter welders, but as you said, it is hard to track down the exact part:

Powerful and Industrial ferrite core transformer - Alibaba.com

Alibaba.com offers a range of powerful,efficient ferrite core transformer to meet commercial and industrial needs.Neodymium ferrite core transformer can also be found.

www.alibaba.com

I think there will not be much wire on this transformer, and the windings will be quite thick. You may be able to dismantle it, count the turns, and rewind it yourself, or find a local transformer/motor rewinding company to do this. To resist the skin effect at the high frequencies used in inverters, the wire used may be multi-strand "Litz" wire.

To reach other Forum members - such as @OscuKoo - who may have a PCB with other non-repairable faults, you can precede their name with the "@" sign, or highlight their name and select "Start a Conversation". You could also try asking for parts on the Polish electronics website "elektroda.pl" .

 

[RolandWeld]

Hello,

thanks for your reply.

From the way that the problem on your machine occurred after a period of non-use, it sounds like the insulating aluminium oxide film in the electrolytic capacitors deteriorated, causing a short-circuit.

I know, that the problem of the blown capacitors was caused by not using the device for a long time.

How soon after you switched your machine on did the fault occur, and had you already tried to weld by then?

I think that happened within one minute after switching on the machine. I haven't tried to weld, but I didn't switched off the device immediately (because at first I wasn't sure, which device caused the bang). I switched off the device after about 2 minutes. My next mistake was turning it back on again after a short while (tto see if it was still working) - it powered on normally but a few minutes later it got dark (this was propably the moment, when the winding of the transformer got damaged due to the short circuit of the capacitor).

How many windings are on the transformer?

I think, that the label on the transformer (14:38:38:14) describes the amount of windings or the ratio of the coils. In that case, there seem to be 4 coils included in this transformer. It might be somthing like this https://pdf.directindustry.com/pdf/...co-ltd/flyback-transformer/224418-928933.html but with only 8 pins.

Have you removed it from the board and confirmed that the windings are open-circuit?

No - not yet. But you can see that the insulation film is burnt and discolored (that's why I think it's damaged). I will unsolder it maybe this weekend.

The Chinese website Alibaba lists many electronic components and complete PCBs used in the "generic" inverter welders, but as you said, it is hard to track down the exact part:

I've already looked at all of these entries - there is no transformer with this ratio available.

I think there will not be much wire on this transformer, and the windings will be quite thick. You may be able to dismantle it, count the turns, and rewind it yourself, or find a local transformer/motor rewinding company to do this. To resist the skin effect at the high frequencies used in inverters, the wire used may be multi-strand "Litz" wire.

This would be the last option - since there are two coils on each side of the core and these are also insolated with a foil, it wouldn't be that easy. The windings are very thin (not thick as you mentioned) - the affected transformer is on the PCB for the internal power supply (not on the high power side).

It would also be possible that other parts on this PCB were damaged as well - in that case a full replacement PCB would be the better solution (but the chance to get one is not very high).

 

[eddie49]

the affected transformer is on the PCB for the internal power supply (not on the high power side)

I guess this board may be supplied by AC mains, or powered by the main DC bus after the input rectifiers ( i.e. it is a DC-DC converter ). Either way, if you know the output voltage(s), maybe you could replace it with a general-purpose power supply.

 

[Johnderek]

I'm inclined to agree with Fred Moore on this issue - my gut feeling is that most, if not all, of these 'sub-premium' Inverters share most, if not all, of the same stuff - from the same production line(s) - inside, or as near-as-dammit to not really matter.

Look at the controls available on that Thermal Arc above - pretty much the same as that Fantasy (oh what a dumb name...) and many other digital control panel welding machines I've looked at all look the same except the layout of the controlling 'buttons' and graphics are different. I very much doubt there is 1,000 Chinese factories all producing this stuff in the volumes required to allow western sellers the buy-price headroom in order for them to offer two year warranties on the stuff. imo this stuff has to be really MASS produced to keep unit costs low enough to make the business model work.

I notice on this site that there is much banging on about R-Tech (and I ain't knocking em) - but where are the internals for their machines made? My guess is that if it was in the UK the item would cost a couple of grand more instead. There are enough people saying they've had to send their R-Tech back as it had failed (and, yes, great customer service etc, replaced it) - but that's hardly 'bullet proof' reliability is it? Their business model has enough profit margin built into the cost of the units to allow it to work. Therefore... my GUESS is that we can probably obtain much cheaper machines of the same effective component quality...

Or summat like that anyway...

OK... I'm ready for the

Exactly you pay for 2 machines when u buy it...
Sherman is another one polish brand with chinese imternals..

 

[bc30se]

and green everlast in us sells the same stuff as sherman, magnum, or fachowiec in poland... this is all the same

 

[Nenko]

 

[Nenko]

I am looking for this board Welder Fantasy Pro JLT AC / DC TIG 210 Device Control Board - Symbol Board ACDC2100CP B2.12. or if someone has a broken model U1 chip.

If anyone knows what the U1 chip is I would be very grateful!

 

[zeppelin builder]

From my understanding it is a case of quality control, chinese companies will build anything to a price, they are no doubt made in the same factories by the same people, but if a customer specifies a certain level of quality and pay the extra I think they get a better machine, I think it is probably the same the world over.
I bought a cut40 years ago, the guy explained that he opened up every machine and inspected them, he said a lot of the time it is silly little things that let the machines down, so if checked and sorted before use then they last well. MY cut40 is still working well after nearly 4 years, even with me oerating it....
I dont have a problem with chinese built stuff, it is who/where you buy it from that is key, a good reputation for customer service and a good warranty from a company that will still be around in a years time. I would pay the extra for a uk supplied machine simply for the back up and peace of mind.

now is that the guy who also sells the wsme welders that are reworked and gauranteed he also repairs them plasma part uk iirc ?