bad ATI 9800

[gedon]

I think I found the problem of an old Hercules 9800 AIW yesterday
One resistor is missing.
NO warranty, so what can I do?

[MONKEYMAN]

Very little i would have to say......its gonna be extremely hard to attach such a small surface mount component and nearly impossible to get the correct part.

[Aedan]

Given the line of other components, I suspect it might be a decoupling capacitor. You'd have to see if it was connected between ground and the chip supply though to be sure.

[dsio]

Given that everything is usually multiply redundant, I'd short it together and pray to xenu. Even if you could find a replacement component, I doubt you could fit it, and its soldering into the space that shim leaves you. Shorting it on the other hand would at least be simple and neat.

[Samuknow]

Originally Posted by Áedán

Given the line of other components, I suspect it might be a decoupling capacitor. You'd have to see if it was connected between ground and the chip supply though to be sure.

That is what I was thinking also...No way to be sure of the value...

Is there a way to trace it back and possibly use a leaded device as opposed to a surface mount device? Might be a little easier to acquire a leaded cap.

[Aedan]

Originally Posted by dsio

Shorting it on the other hand would at least be simple and neat.

If it is a decoupling capacitor, shorting it would short the power supply, and potentially cause the whole thing to go up in smoke.

Decoupling capacitors are not critical in value - as long as it's approximately correct.

[gedon]

I asked ATI Support yesterday. they said "ask Hercules". Does the manufacture of the card put this component on the chip?

[Samuknow]

Originally Posted by Áedán

If it is a decoupling capacitor, shorting it would short the power supply, and potentially cause the whole thing to go up in smoke.

Decoupling capacitors are not critical in value - as long as it's approximately correct.

Where does one go about getting 0204 SM caps?

[Aedan]

Originally Posted by gedon

I asked ATI Support yesterday. they said "ask Hercules". Does the manufacture of the card put this component on the chip?

Not normally, no. It would be supplied as a package from ATI. That doesn't mean that ATI will answer a support request for a product from Hercules though.

Originally Posted by samuknow

Where does one go about getting 0204 SM caps?

I tend to buy such things from RS and Farnell personally. I don't know what is available in the US however.

[gedon]

received a new email from ATI support, they can't help me
if I understand it right, the support has no acces to this kind of information

[dsio]

If I were you, I would buy a destroyed 9800 off ebay. Water damaged, overheated, PWM damaged, whatever, as long as the core is more or less intact, and do a transplant.

[dsio]

http://cgi.ebay.com/128mb-Ati-Radeon...ayphotohosting

[Samuknow]

Originally Posted by dsio

If I were you, I would buy a destroyed 9800 off ebay. Water damaged, overheated, PWM damaged, whatever, as long as the core is more or less intact, and do a transplant.

Brilliant dsio....

[aghastpumpkin]

I was just going to say...the same. Oh well.

[dsio]

/pfft

[gedon]

I am not familiar with 9800. use the whole 9800 series the R350 chip?

[dsio]

The very late model 9800XT uses the R360, as far as I know, all the others use the R350.

[Takeshi_0]

dsio just provided a brilliant idea!