Rusty Asus Mainboards

[saaya]

http://www.semiaccurate.com/2010/01/...-rusty-chokes/



cant really see how this would burn the mainboard and kill the cpu...
but it sure wont help the board to operate properly, and it aint pretty, thats for sure

and its not really an asus problem, i dont think only asus used those chokes, and they looked fine when asus bought them, i guess... so they couldnt have known that this would happen... i guess this is why asus came up with the idea to have some of the boards components tested by TUV.

really lame from asus to try and dump their stock of the boards at low prices instead of fixing them though...

[dengyong]

Would it be difficult to remove the covers from these chokes ?

[Marco André]

I kinda like the pattern

Oh no!! It's not a new pattern, it's real rust on 12 phase power motherboard!
Nice find Saaya

[mibo]

Is this really a problem - I'm wondering?

Blown capacitors might short your PSU and thus are dangerous. But what will this rust cause? Ok, it looks cheap and old and you feel betrayed - as you bought cheap and old stuff.
Will the rust affect the CPU power supply? How? On what timescale?

[BulldogPO]

Wow!
Where to get some rusted motherboards to install in rusted PC case to make Diesel Punk post apocalyptic PC mod

[Jokester_wild]

Wow!
Where to get some rusted motherboards to install in rusted PC case to make Diesel Punk post apocalyptic PC mod

so i wasnt the only thinking of ratrod style computers when seeings this

[Dr.Paneas]

ASUS sucks a lot lately. . . . This is unacceptable from a manufacturer of its name

[zalbard]

ASUS sucks a lot lately. . . . This is unacceptable from a manufacturer of its name

Lately? You mean for the last 3-5 years?

[Particle]

There is nothing wrong with your board. Your chokes must just be set in a ferrite epoxy or something.

I'm not sure what difference the author thinks there is between "ferrite core" and "iron core" chokes. Ferrite is another word for iron. It's chemical symbol is even Fe.

[BulldogPO]

Ferite + humid conditions?

[Texpat]

There is nothing wrong with your board. Your chokes must just be set in a ferrite epoxy or something.

I'm not sure what difference the author thinks there is between "ferrite core" and "iron core" chokes. Ferrite is another word for iron. It's chemical symbol is even Fe.

Ferrite is not iron! Ferrite is that gray stuff that you find behind most fridge magnets. It can't rust. It's better than iron because it holds a charge better than iron and therefore wastes less energy from the power phases. And of course it lasts longer due to not rusting...

[BulldogPO]

Yep like they said, Ferrite coils are ok, iron is the on that rusts.

[dengyong]

Doesn't matter whether it's an iron or ferrite core.... it's the cover that's rusting. If the cover slides off easily, you could clean them up and paint them any color you'd like.

Ferrite :
1 : any of several magnetic substances that consist essentially of ferric oxide combined with the oxides of one or more other metals (as manganese, nickel, or zinc), have high magnetic permeability and high electrical resistivity, and are used especially in electronic devices.

[saaya]

Would it be difficult to remove the covers from these chokes ?

they are usually glued on, so i dont think you can remove the cover easily...

I kinda like the pattern

Oh no!! It's not a new pattern, it's real rust on 12 phase power motherboard!
Nice find Saaya

heh, yeah, it actually looks cool imo

Is this really a problem - I'm wondering?

Blown capacitors might short your PSU and thus are dangerous. But what will this rust cause? Ok, it looks cheap and old and you feel betrayed - as you bought cheap and old stuff.
Will the rust affect the CPU power supply? How? On what timescale?

im wondering the same... if the rust is only on the coil shielding, then... its just a cosmetical problem really and i really wonder if it affects the reliability and quality of the board at all... even then its pretty embarrassing for asus and really lame to try and sell them for a low price instead of fixing them. then again... if its really just cosmetic... and they accept rmas if the customers complain... then theres nothing wrong with what they are doing... replacing all the coils would probably cost a LOT, and im sure there are many people who dont care at all about the looks as long as the board works...

[dengyong]

The glue doesn't hold very well especially after the coils have heated up... I've had a few slide right off. (I have no experience with this board)
Some low end boards don't even have covers on the chokes.

[Speederlander]

That's not rust. It's performance enhancing oxidation.

[iddqd]

That's not rust. It's performance enhancing oxidation.

hello there, ASUS marketing dept.

[dengyong]

hello there, ASUS marketing dept.

Read your sig.

[cegras]

You know what rust is, right? Iron oxides ...

What is ferrite?

[dengyong]

You know what rust is, right? Iron oxides ...

What is ferrite?

Did you read the thread ?
http://www.xtremesystems.org/forums/...8&postcount=13
Ferrite has nothing to do with this, the cover is rusting and the cover is just for looks. Here's a pic of a similar one with no cover.

[tool_462]

Need to snag a rusty board for Bill Owen to use in that Cooler Master ATCS 850 - District 9 mod

[IFMU]

Not sure how I see this is really "news".

Moved to

XtremeSystems Forums > Hardware > General Computer Hardware

[Particle]

Hmm, we seem to be using two different but valid definitions for ferrite. It most certainly can refer to plain iron and in all definitions means some iron compound.

[dengyong]

Hmm, we seem to be using two different but valid definitions for ferrite. It most certainly can refer to plain iron and in all definitions means some iron compound.

Ferrite has a cubic crystalline structure with the chemical formula MO.Fe2O3 where Fe2O3 is iron oxide and MO refers to a combination of two or more divalent metal (i.e: zinc, nickel, manganese and copper) oxides. The addition of such metal oxides in various amounts allows the creation of many different materials whose properties can be tailored for a variety of uses.

Sourced from wiki.

[Particle]

Ferrite has a cubic crystalline structure with the chemical formula MO.Fe2O3 where Fe2O3 is iron oxide and MO refers to a combination of two or more divalent metal (i.e: zinc, nickel, manganese and copper) oxides. The addition of such metal oxides in various amounts allows the creation of many different materials whose properties can be tailored for a variety of uses.

Sourced from wiki.

Actually, wikipedia itself opens the article for Ferrite as:

Ferrite or alpha iron (α-Fe) is a materials science term for iron, or a solid solution with iron as the main constituent, with a body centred cubic crystal structure. It is the component which gives steel and cast iron their magnetic properties, and is the classic example of a ferromagnetic material. Practically speaking, it can be considered pure iron.

This dictionary agrees, stating this as one of the definitions: "the pure iron constituent of ferrous metals"

Or in other words: Ferrite is iron. Ferrite can also refer to certain iron compounds. It's that second part I learned today. The first part I originally stated was still correct. That's the definition I remembered from Chemistry way back in the day.