Voltmod HD3870 Sapphire ON Fire

lol?

Very careless mistake.

Take a look at the PCI-E power connector you soldered the POT to.

You soldered to two pads right? You soldered one to ground (the pad from the side of 3 that is closest to the GPU core), however the other one from the other row connects to the live PCI-E pad.

You should have soldered in the row closest to the GPU core, as it relates to the black wire on the connector, and on the wire. The other color is positive, in this case 12 volts I believe.

Very surprised your card lasted as long as it did.

Also Air cooling is not nearly enough for that much voltage, water cooling, or at least a decent air cooler is required.

the heat blew the wires lol. I guess you can try to clean it off, get a reference cooler and try to RMA it?

No The Vmod Works at 1.56V
But 1.7 V ?,
i Don't Know The Pc Don't Work Even Without 3870??

I'm using 550W PS
And The ps Did not works With out the MotherB
I did connect The PS-on ('green) With PG(grey)
PSFans did Not Work???

I'm gonna go ahead and deem this fail.

No, he's saying that you attached one of the wires to the wrong point of the PCIe power connector. You're only supposed to connect the wires to the ground! What you did it connect it to straight 12V! Like he said, I'm surprised that it lasted that long!

that was not a smart idea, and by the looks of it you used too much voltage

you'll have to by a new card.

Yea, definitely a new card! For stock cooling like that, the most I would do it about 1.4v. With watercooling, maybe, just maybe 1.65v. Otherwise you are killing your actual GPU.