• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

What is this called

Status
Not open for further replies.

Pommie

Well-Known Member
Most Helpful Member
I would meter that before buying a new one. The burning on the PCB in front of it probably caused the burn marks.

Mike.
 

Les Jones

Well-Known Member
Most Helpful Member
In the first picture it looks like the wire has melted where it comes out of the winding about one third of the way up from the bottom pin. This does not make sense as there is no pin for it to connect to. I think the company that made the welder will be the only source. But I suspect they will only supply the complete board as a spare part.

Edit. after posting this message I noticed Greory's post #4. If two pins are missing it would explain the melted end of wire.

Les.
 

Gregory

Member

dknguyen

Well-Known Member
Most Helpful Member
I went on the sight but I can not understand the language.
I hope that some wone can supply me with this item who speaks English
So near but so far
Thank you
Keep searching using information that appears on the labels in subsequent searches. The link I sent you showed that it was from a company called Hangsing.
 

dr pepper

Well-Known Member
Most Helpful Member
Google translate might be use to you here, you can translate the whole page.
I have a imported mig weld set, it has several ferrite transformers, it looks like they parallel them to get high enough current.
 

gary350

Well-Known Member
I use to repair circuit boards, one thing you need to consider, did something on the circuit board kill the transformer or has the transformer killed other parts on the circuit board. You need to inspect every part on the board then test all the ICs, transistors, diodes, mosfets, and other parts that could be fried inside without showing signs of self destruction on the outside. Check all the capacitors. Inspect resistors for cracks. Sometimes resistors cook on the bottom side where they touches the circuit board. I would never buy a new part for an old board until I know the board is good.
 

Aleph(0)

Member
Gregory that's a ferrite transformer which is basically gaurnateed to be custom wound so I say manufacturer/distributor is best contact for replacement:)

I went on the sight but I can not understand the language.
I hope that some wone can supply me with this item who speaks English
So near but so far
Thank you
Gregory UniMig brand distributors/service centers located in predominately English language countries should be able to help you:)!
 

Aleph(0)

Member
That is a problem as they will not release a part for the board.
Gregory sry for that:(! That's symptom of _disposable society_! It's just easier for them to sell entire board or product than parts or heaven forbid train/hire REAL technicians instead of just card swappers:rolleyes:!

So anyhow I agree! Easiest solution is finding same model welder sold low as parts! So I'm thinking Ebay and like that might help:)?
 

Gregory

Member
I use to repair circuit boards, one thing you need to consider, did something on the circuit board kill the transformer or has the transformer killed other parts on the circuit board. You need to inspect every part on the board then test all the ICs, transistors, diodes, mosfets, and other parts that could be fried inside without showing signs of self destruction on the outside. Check all the capacitors. Inspect resistors for cracks. Sometimes resistors cook on the bottom side where they touches the circuit board. I would never buy a new part for an old board until I know the board is good.
This is what I think caused the problem.
K75T60
 

Attachments

AnalogKid

Well-Known Member
Most Helpful Member
Very few companies support "untrained" users doing component level maintenance on a high-power circuit. At best they will sell you a replacement board, but don't count on it. ebay often has boards salvaged from all kinds of equipment, so you might get lucky there. I've repaired my Panasonic TV twice with working boards pulled from units with bad displays.

There is an obviously dead resistor in front of the transformer. Are you sure the transformer has failed? Not all pin positions have to be populated.

ak
 
Last edited:
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top