Schematics and BRD for AMD 109-C29657-10 Blackcomb

Hi.
Looking for the schematics and the Boardview (if possible): Video Card AMD 109-C29657-10 Blackcomb 1GB. It comes on Apple iMac 27" A1312 Mid-2011 (MC813LL/A MC814LL/A). I got a capacitor C142 blown and I need to find the right one for the replacement. Or please give me some tips which capacitor could be used instead.
Any help would be greatly appreciated!

 

[ConstaZ]

What I'm thinking, based on frequency and resistance value, which is 270 Ohms for similar capacitors nearby, could it be 10-12mF? Correct me if I'm wrong. Still need a voltage value. Or I might be using a 25V one. Any ideas?

 

[ThienBui]

difficult
Unavailable schematic.

 

[ConstaZ]

Ok. Thanks. I will resolder the capacitor that I thinking might work well and let you know after running tests I've done the same before with A1260 and Mac Mini without schematics. Just need to use a bit bigger voltage and maybe bigger tolerance caps than the original ones, just in case.

 

[monamemak]

reference schematic

 

[Dan Rick]

reference schematic

help us with this schematic please friend