Mobo Blues - why me :(

[Grimuls]

Hello Reader
Where to start....Ive been without a good system because of the lack of a good motherboard, for some months now.
Truth be told, I've been having hard luck with my PC parts. (I have no money to buy any really, and the ones I have are dying.

Anywho, right now am most dissapointed. With what I dont know.. but I have to be with SOMETHING, so right now I'm blaming my self.

Here's the story,

I recapped a Gigabyte motherboard (SKT 462),and I was soo happy. It was just one of those board that was laying by the way, that you would wish would just work some day.
So I took to the task, spotted some bad caps, and low and behold, it came up. I was Proud I was happy. I had wanted this for years...

But before putting it in the Case (lord I wish I had ), I decided to just apply some of my thermal paste to the the chipset.

I pinched in both of the clips that hold down the Chipset HS on the underside, and when pushing one through, my tool slip, and I split a transistor ... IN HALF
I knew it was now over, but I tested it anyway... and indeed, it was.

My questions to you,
can I replace one of these?
Will the average one off of another board work (summing up some inner hope
here- I really doubt that :|)

The lil thing is the ONLY thing wrong with the board.
(they're the smallest (silver thingo-s) lil thing in this picture)
http://www1.istockphoto.com/file_thu...ic_closeup.jpg

[Grimuls]

Re: Mobo Blues - why me

Edit - It was a resistor :|

[gonzo0815]

Re: Mobo Blues - why me

Well. from your pic i can`t figure out, what part you have destroyed....you fore shure have to make a closeup pic from your board, otherwise noone can help you.

iN generall it should be possible ot replace an resistor or and apacitor, it all depends on your soldering skills ;-)

[shadow]

Re: Mobo Blues - why me

Yer, a close up picture is a must in this situation. The destroyed component can not be seen. Any component can be pretty much replaced. However some are very difficult to remove without the proper equipment. Something like a DIMM memory slot or an ATX connector. A simple resistor, transistor or capacitor should be able to be done with just a normal soldering iron.

If/When you are going to post another picture, use the badcaps forums as the image host provider. Makes it much easier to see the component without the 'iStockPhoto' banner splashed in the middle.

Here is a link on how to do it, just in case you do not know:

https://www.badcaps.net/forum/showthread.php?t=1868

[Grimuls]

Re: Mobo Blues - why me

Thanks much for the responces

OK firstly, That pic was of my actual Mobo (I apologize for the confusion) - it was just a random pic I picked to illustrate what I was taking about.

I dont have a camera close to me right now, so I'm afraid that such examples are the only ones I'll be able to provide.
Here's another more accurate one. If I'm not mistaken, this is a resistor, I hear they may also be capacitors, but.. I'm not aware of that.

I'd really hope these components are indeed replacable - I've worked soo hard on this motherboard, and really, its currently my last hope .
If they are, how so? How likely will just bridging the circuit(where THAT component came from) work?

I already tried that, but it didnt work, which leads me to another question ;
(which I would personally answer in the affermative I guess);
could recapping the motherboard with caps of higher capacitance and voltage have had anything to do with the fact that just bridging the legs of the component (in the pic) just DOENST work?

Thanks again.

[Per Hansson]

Re: Mobo Blues - why me

That looks like a resistor, you can use a normal big resistor in it's case...

But you will need to find out what the resistance of it should be...

[Grimuls]

Re: Mobo Blues - why me

That looks like a resistor, you can use a normal big resistor in it's case...

But you will need to find out what the resistance of it should be...

OK, thats sounds good, AND BAD :\

I'm going to look on the PCB, but in the case that its not marked there...
How can I find out the value of the capacitor? :\


--------EDIT---------

ok I took a look, only the resistors on top of the PCB are labelled - they must've thought the ones round back werent important - I dont see anythere.

What's next - a schematic diagram maybe? . How will I find out what resistor this is - I really need a mobo - this has to work.

[Rainbow]

Re: Mobo Blues - why me

You need someone with the same board to read the resistor value.

[Spacedye69]

Re: Mobo Blues - why me

Which means you will need to post the model number.

[Grimuls]

Re: Mobo Blues - why me

Good news guys!
(though its a bit late :o :p)

I bridged the resistor, and the system is functioning!

Thing is though - that I'm pretty sure that as a result of that...
the board is overvolting! .

Of course we know that resistors RESIST current - so naturally, if one isnt present, we can understand how more voltage than was designed for.. could come through :\

It killed an AGP card if i didnt mention, and incidentally... it was the RESISTORS.. ON THE CARD.. that get hot (in its now faulty state).
I'm theorizing that because too much current was coming through on the AGP port.. the resistors on the card died (seeing that they would be the components to hold back current). (make sense?)

My Vcore also seems to be a bit.. unusually high (1.81 sometimes).

But because I know that this board is one of those that adjusts everything automatically in the name of stabilty (can also clock up to the most stable via its utils)...
I'm KINDA... letting that pass off as normal.
But it is in the back of my head.

The real crappy thing about this situation though, is that I CANT put a new card in that slot - for fear it IT dying as well...
AND.. the dam thing cant tell you what the AGP voltage is....

Anyone know how you can measure AGP voltage?.. (perhaps what pins on the underside)

[shadow]

Re: Mobo Blues - why me

I do not remember right now but AGP voltages should not be too hard to find out. One thing to tell us is whether the motherboard has an AGP2x or AGP4x (and maybe AGP8x) or AGP2x/AGP4x (and maybe AGP8x). They changed the voltage significantly from AGP2x specification and the AGP4x/AGP8x specification. Some motherboards only support AGP2x or AGP4x/AGP8x. However some older boards work with both voltages.

[Per Hansson]

Re: Mobo Blues - why me

Look for a mosfet close to the AGP slot and measure on it

[gonzo0815]

Re: Mobo Blues - why me

I think this resistor was intended to programm the o/p voltage of this small AGP voltage regulator. It is a simple step down buck controler, just search google for the numbers printed on it.
I would try an 10K, or lock at the appsheet of this little controler IC.

[Grimuls]

Re: Mobo Blues - why me

Well. safe to say.
This board has never given a problem since.
I loved it, because of our history together.
But I gave it as a gift to someone as well as fixing up their lil home studio PC.

Felt good ^_^
All input given on this thread over its tenure was greatly appreciated btw.