Originally Posted by Error 404

Edit: For vMem, can you measure resistance from pin 7 on the uP6106 IC to ground?

Edit 2: I'm pretty sure that CL3P20 is right about the vGPU IC, that was my original assumption, but can you check to be sure? Just because the models that look exactly like it (and function similarly, not to mention actually have datasheets on the maker's site) have completely different pinouts (uP6203/2, etc.)




I figured that out from an XBit post, but didn't feel like trusting one source. Link's borked, btw



Okay, that's a fairly common vMem chip. Should have something together shortly, or more DMM-ing to ask.



I'll check. Sounds like you'll need a 10K pot.

Originally Posted by Error 404

I'll check. Sounds like you'll need a 10K pot.

Originally Posted by CL3P20

If you use continuity to trace pin13 to a resistor or pad...that will be mod point for pencil/solder. ie- pin13 traces to resistor...then you should be able to pencil...if it goes to pad..then its solder only, mmk!?

Originally Posted by CL3P20

If you are referring to the resistance level from pin13 = 5k ohms...then you will need a 100k VR for GPUv...and not a 10k. Whatever mod point measures to * 20 = final VR size to start with for mod.

If you use continuity to trace pin13 to a resistor or pad...that will be mod point for pencil/solder. ie- pin13 traces to resistor...then you should be able to pencil...if it goes to pad..then its solder only, mmk!?

Originally Posted by CL3P20

Ohh...and vMEM is pin6 ->ground...you can use pin3 on the IC, as it is also ground. Measure resistance for pin6..*20= VR size for vMEM mod..ok!!

datasheet here

Originally Posted by Willhemmens

So i need to find a place on the back of the pcb that pin 13 is connected to? or not directly connected to? And were am i lightly to find this?

Originally Posted by Error 404

I could say it was a typo, but that's a lie. Never knew that rule, was just thinking that 5k across the points would lead to .5x original resistance, and 10K was a more common pot



You certain it's PSOP (I was operating off of the SOP package's pinout...)? I'm not criticizing you, and from above I'm assuming you're right. OP, listen to him, not me

Edit: This I think I can do...



Unplug the card, set the DMM to continuity (or resistance) and put one lead on pin 13, then try to find another point (connected to a SMD resistor, preferably) that measures close to 0 ohms. Anything more than 10-ish is a no-go, and a good point should be well under 5, it all depends on your meter, and the quality of the connections, the connection btwn your probe and the contact, etc.

I'm fairly certain I at least go that right

Originally Posted by CL3P20

Doesnt really matter as both of them are pin3 for ground and pin6 for FB...so only a difference of resistance between the two IC controllers..not actual pinout.

..and for tracing the mod point from pin 13..just use continuity [the beep] on your DMM to trace...then measure for resistance and *20 for VR.

Originally Posted by CL3P20

any update on the final resistance or location for pencil mod...I need the GPU in hand to do this myself? ...