Missing CAP on an ASUS 3450 = ?

[FatRakoon]

I have an ASUS ATI 3450 PCIE GFX Card

It however has a cap Missing / Broken off.

Apparently, it was knocked off by a ham fisted lad who was trying to put it into his first build and so its never been used, but the cap is missing.

So, I was wondering if anyone could tell me what value this cap is or rather was?

This is a picture of the EXACT card

http://www.expreview.com/img/news/080123/asus_2.jpg

Its the silver cap with the red markings on it... I cannot make it out.

Many thanks

 

[Boozebeard]

I feel sorry for the guy who broke it

 

[twist3d0n3]

can you see where the trace leads to?

it's possible its not that important

 

[FatRakoon]

I feel sorry for the guy who broke it

Well, yes and no.

Its happened to me before,m so I know how it feels, but he is a cocky runt, so secretly I kind of wee'd a bit when I laughed.

can you see where the trace leads to?

it's possible its not that important

Perhaps... I cannot see any traces at all to be honest that connect to it.
Underneath both are NOT traced to anything, and on top the positive half is coloured white anyway, but the red half has 2 traces near, but not touching the contacts.

I suppose I could pop it into a cheap Mobo to have a look if it works though I suppose, but I would much prefer to know the CAP values.

 

[Monkeynut]

It looks like a polymer cap which is much harder to get hold of than standard electrolytics. It's likely it's 2.5V and perhaps 470uF as this seems extremely common but you'd have to find out for sure, you wouldn't want to install the wrong one! (bad things would happen, very bad things) you could try www.badcaps.net as they seem to know their stuff in this regard.

 

[lord filbuster]

I found some pictures of other hd 3450s (including a reference card i think), and judging from these, i'd say it was either a 16v 100uf aluminum polymer cap, or a 2.5v 820uf one, and i think the latter is more likely, but i can't say for sure. As the poster above said, it definitely isn't a regular electrolytic. Unless you know someone who has that exact card and can check, or you find a better photo, i wouldn't risk it. Maybe asus could help you?

 

[FatRakoon]

Monkeynut & Lord Filbuster

First off, 2.5v ? Id rather think that its 25v before 2.5v

470uf - Yes, its a common value as is 100uf however 820uf is also doubtful

Im not expert of course, Im only going by past experience but 16v or 25v is more likely and 100uf or 470uf are more likely farrad values

The most common of these I would assume, is therefore the 16v 470uf cap

Getting hold of any value cap of any type is not a problem.

But yes, its an unknown component and replacing it with a wrong one can do untold dammage, so its not worth the risk.. Not for a component that only costs few pence.

Thanks guys. It means a lot.

 

[drunkenmaster]

16v 270uf ,probably

if you looked for the card on newegg, and zoomed in on the pictures(and wait for it too focus, it will) it will show you the top of the cap, however, its a different colour, if its just a change to the make or if the card changed to a new rev that required something different I don't know.

I also know nothing about caps and I assume the 270 on the cap is the uf rating, it also says 81m.

Checking a Sapphire model it has both 16v 100uf caps on and a 2.5v 820uf cap on.

 

[lord filbuster]

Monkeynut & Lord Filbuster

First off, 2.5v ? Id rather think that its 25v before 2.5v

470uf - Yes, its a common value as is 100uf however 820uf is also doubtful

Im not expert of course, Im only going by past experience but 16v or 25v is more likely and 100uf or 470uf are more likely farrad values

The most common of these I would assume, is therefore the 16v 470uf cap

Getting hold of any value cap of any type is not a problem.

But yes, its an unknown component and replacing it with a wrong one can do untold dammage, so its not worth the risk.. Not for a component that only costs few pence.

Thanks guys. It means a lot.

Yeah, 25v is more common, but only for electrolytic capacitors. The one that snapped off is a solid polymer cap, and they are really low voltage, and really high capacitance. i'm fairly certain you either want this one click or this one click. I think that the cap there is also acting to supply some series resistance too.

 

[Defunkt]

This thread reminds me of an old MSi mobo I had that 2 caps fell off (yes fell off) and the board still worked fine for a couple of years XD

 

[lurkio]

can you see where the trace leads to?

it's possible its not that important

Shush dude , dont let the secret out

Yes folks , Electronic manufacturers sometimes stick on components just for decoration

 

[twist3d0n3]

Shush dude , dont let the secret out

Yes folks , Electronic manufacturers sometimes stick on components just for decoration

i'v had them fall off things before with absolutely no change to the component... sometimes they just reduce noise, nothing more...

 

[FatRakoon]

Well, I have had areply from ASUS

They wont tell me the component, but they have said that I can go through the RMA process.

Arg, to be honest, its probably not worth the effort. I iwll slap it into a cheap board as I said and if it works, I will just de-solder the pins that are left on the board to tidy it up, and use it for a a spare.