Originally Posted by EpicAMDGamer
Allright so I got my trim POT's today. I have a 25turn 20K and a 25turn 50K, which should I use for memory and which for the core?
And when I turn it on the first time, should I have the pot's set at a certian point. I mean I dont want to turn on the card and have it fry itself.
I'd use the 20k on the core, and the 50k on the mem.
For the pot, first determine how you want to turn it to change the voltage. Let's say you want to turn the pot cw for it to increase voltage. Therefore you want to start the pot in the ccw direction. Turn your pot ccw 25 turns or until it starts making little clicking noises (which means it is at the end). At this point, find the two legs that read the max resistance (make sure one of the legs is the middle one). From the middle to one leg should be ~0ohms and the middle to the other leg should be 20k or 50k (depending on which pot you are using). The pair of legs that meaures to the max are the two that you solder to. Thus when you put the pot in the circuit, the resistance is maxed and therefor will not affect the circuit drasticly.
Once you solder the pot in, do the same resistance measurement from the FB pin to ground. If the resistance is approximately the same (should be a little less), then your mod should not damage anything.Edited by just_nuke_em - 10/31/12 at 10:59am