Butters autoweld 245 help

[Williewelder]

Hi everyone. I'm posting this for a elderly neighbour
He has a butters autoweld 245 and needs a new pcb for it. From what I've researched online the original boards are not available but there may be a universal one that will fit
Does anyone know where I could get one? Name / model etc I'm looking for or anything that can help. I've included pictures for your reference. It's actually the black 20 pin 'resistor' but again not available so a new board it is unless anyone knows different
thanks

 

[eddie49]

Hello and welcome !

The black integrated circuit has 22 pins, and it appears to be a dedicated microcontroller. It is marked "Elwresta EW 22", which is actually the part number of the printed circuit board, so the chip has been labelled specifically for use on that board.
According to this thread on the Polish electronics website "elektroda" :

https://www.elektroda.pl/rtvforum/topic3313607.html

the generic part number of the chip is R-uEM95-04G. However, there is no information online about that device.

According to this completed auction on eBay Germany, the same board is used in welders from L-Tec, EWM, Messer, and Migatronic.

EW 22 GA ELRESTA Wien Ersatzsteuerung MIG MAG • EUR 28,00

EW 22 GA ELRESTA Wien Ersatzsteuerung MIG MAG - EUR 28,00. ZU VERKAUFEN! 122963716912

picclick.de

Also used in the Murex Tradesmig 230:

Murex Tradesmig 230 PCB

Hi to everyone. I am new to this forum. I have got a Murex Tradesmig 230 with pcb Elresta Wien W22 4273882. It has got a burnt resistor R1. Can anyone tell me the value of this resistor or supply me with a schematics diagram? Thanks.

www.mig-welding.co.uk

If you decide to substitute the board with a generic one, I think the diagram on Page 15 of this manual shows the external connections of the PCB:

http://murex-welding.co.uk/manuals/other/Instruction%20Manuals/Tradesmig%20165-235-245-285.pdf

Another possible diagram:

https://www.hobbielektronika.hu/forum/getfile.php?id=230578

The word Elwresta appears to be the name of a company, and they are/were located in Wien - Vienna.
This UK company offers to fix the boards on a repair-and-return basis:

Elresta Wien W22 4273882 | PCB | Repair & Supply | Lektronix

www.lektronix.com

https://www.lektronix.com/brochures/repair/united-kingdom-aldridge.pdf

What exactly has gone wrong with the Butters Autoweld? We may be able to help you or your neighbour fix the fault without needing a new board.

 

[MoreWellie]

black 20 pin 'resistor'

you do understand that this isn't a resistor pack and therefore cannot be tested with a multi meter? Just in case this is what you have done and are assuming it is this that is broken

 

[MoreWellie]

and that board has seen a repair or two before and there are quite a few "interesting" looking solder joints, some of which may be dry and worth running a soldering iron over with some proper lead solder before, providing you feel confident to do so

 

[a111r]

Yes a generic board could be a good solution if that chip is both damaged and obsolete.
Here is one I bought out of curiosity and have yet to use it. Needs a bit of deciphering, maybe some additions but one can't moan at the price:

Aliexpress universal PCB

A couple of weeks ago there was a helpful post, linking to a AE universal PCB. On the site there were a fair few, so I had to buy the simplest one: https://www.aliexpress.com/item/1005001550160079.html?spm=a2g0s.9042311.0.0.40ab4c4d095wtG It arrived in 10 days. The quality seems good, better...

www.mig-welding.co.uk

 

[arther dailey]

doesnt tecarc offer a board repair service , well worth doing , I have the same mig , brilliant tool and wouldnt part with it for anything , get in touch with tecarc I would say.