Relay identification please :)

[Barttech Computers]

Of a pcb with markings ST180 could anyone help with replacement part

[sam_sam_sam]

Please take a picture of the relay itself so we can see what type of package it is in

[stj]

worst design i think i'v seen in years.
all those big resistors cooking a bunch of capacitors directly below them!
also i see those soot stains - you need to clean that off when you replace blown parts because the carbon is conductive.

[Barttech Computers]

Please take a picture of the relay itself so we can see what type of package it is in

doing now :

[Barttech Computers]

worst design i think i'v seen in years.
all those big resistors cooking a bunch of capacitors directly below them!
also i see those soot stains - you need to clean that off when you replace blown parts because the carbon is conductive.

terrible design is a complete understatement, worst I have seen

[Barttech Computers]

HERES THE PICS

[R_J]

That is a transformer, not a relay

[Barttech Computers]

Great, any idea were i may find a suitable replacement

[stj]

if you didnt know what it was, how do you know it's bad?
what is the whole board from anyway?

[Barttech Computers]

if you didnt know what it was, how do you know it's bad?
what is the whole board from anyway?

Fuse kept blowing, 0 ohms one side of fuse, inject 1v and transformer got extremely hot, after removal resistance is high kohms,no short and obviously its very burnt on bottom

[stj]

transformers are for AC, if you inject DC they will get hot - they are just coils

[eccerr0r]

Transformers are supposed to look like shorts, it's just a long piece of wire inside after all.
Transformers tend to be custom for the design. Is this a switch mode power supply? Can't tell if it's an EI or ferrite core, looks like the latter and hence a switch mode, but the circuit around it looks wrong.
Will need more data, better pictures of board surrounding it...

[CapLeaker]

Now this is going to be an interesting thread.🤔

[Barttech Computers]

Thanks everyone for letting me know, I got a board replacement in end.

[eccerr0r]

Now this is going to be an interesting thread.🤔

Damn, you jinxed it!

[CapLeaker]

Damn, you jinxed it!

I was looking forward to this thread! This would have been interesting.

[stj]

it has potential to be educational

[eccerr0r]

it had potential to be educational

FTFY... buying replacement boards is not educational

[sam_sam_sam]

FTFY... buying replacement boards is not educational

I agree with you hole hardly about it was just getting interesting now it gone unless this person decides to try to repair it this would be interesting

[sam_sam_sam]

Fuse kept blowing, 0 ohms one side of fuse, inject 1v and transformer got extremely hot, after removal resistance is high kohms,no short and obviously its very burnt on bottom

Sometimes you can check a transformer with a ring tester but do not completely rely on it because depending on the type of transformer it is it might show it shorted when it really is not

This is why the question was asked what type of device is this board used in please post some pictures of this device plus all of its board front and back of each board