So, I bought a broken 7970 off of here in the hope to repair it. It is sometimes picked up in RBE (I cannot load bios but the card shows up)... Also Windows detects the card and trys to install default drivers but CCC will not.
***This card cannot be RMA'd due to it being bought from a second party... Plus the block has been off and I've replaced thermal grease... etc***
So upon inspection of the PCB I have found what looks like an area that is less than the size of a dime has most of its capacitors burnt.
These are the small SMD Capacitors that you can see in the picture and the larger ones are labled 2018, 2019, and 2028. The smaller smd Capacitors are not labeled from what I can tell.
So I have tried to contact Sapphire to get the specs on these capacitors in order to replace them but they will not respond.
I have replaced a SMD capacitor or a 5870 with good results (it works now).
My options are... use some SMDs that I have laying around on spare broken cards: 5870, 6870... etc. I have been told that I can replace the capacitor with higher voltage, ulr, and same or higher capacitance, but not knowing the specs on any of the capacitors I'd have to just desolder a few of the other capacitors of the same size and check them with a meter at school then test some extra capacitors on the spare parts cards I have.
Another problem I have is that I feel comfortable doing this with the larger caps (i'd be using a heat gun or maybe just a small soldering Iron I have)... But I do not know how I would do it with the small caps as they are really tiny. I am going to ask around and see if anyone on campus has a nice soldering/reflow station but it may be a long shot.
Any thoughts or ideas would be greatly appreciated!
Thanks guys!
Andrew