Can I fix this?

[stevo1210]

My friend's graphics card recently burnt up and I want to fix up his card to get it running again. It's a really good card so I feel kinda sorry for him.
Anyway, we tested this card to see if it would work because in his Dell Dimension 4600, it wouldnt boot and kept shorting the PSU or something like that.
Anyway, we decided to test it in another PC that wasn't a Dell and the card let out a lot of smoke and a horrible stench.... I jumped an hid under the table while I pulled the power cable out in the same process.

The card was really hot when I touched it just a few seconds after the event. Anyway, we found two burnt components, a MOSFET and what seems to look like a tantalum capacitor maybe?
The marking on the MOSFET is 505 T60 N02R and the other thing that looks like a tantalum capacitor has marks of SK32.

The MOSFET is directly underneath SK32 in the picture.... you may not see it, but the sides of the MOSFET have turned black with carbon or something like that.....

The components look fine, but have been melted off the solder tabs in the "burning up" process.

One thing I did notice is that the card is filled with Rubycon MBZ and Rubycon YXG series caps.



I don't know what caused this... one day it just decided to screw up....I hope this can be fixed....
The PSU on the Dell is a Hipro 250W with no bad caps and the PC still works perfectly without a problem.

Thanks.

[Leopard]

Re: Can I fix this?

Is that card a 9800 series Radeon card? Some 9800 cards had some sort of manufacturing defect, something in the solder used on the backside of the card, "behind" the GPU itself. If the GPU reached high temps the solder would expand a little. When the process was repeated numerous times if the cooling wasn't adequate, the solder would expand enough and the GPU got shorted and cooked.

[kc8adu]

Re: Can I fix this?

if the mosfet in that vrm shorted through the gpu is toast.
the sk32 it a schottky rectifier.
its probably shorted.
take it out and check the mosfets for shorts s-d
if you are lucky just the sk32 is bad.