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Old 01-27-09   #101 (permalink)
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Ok, another question... yeah, I know... I just want all info stored in my brain


So I got one of these from radio shack.. (pic attached)

Am I correct in thinking that by using the multi meter touching the red - black to see what the resistance is set to and adjusting the screw to find out which way to add or subtract the number?

And to have it set to 400 Ohms when I begin?


I am going by this guide and the solderless one here as my first attempt will be solderless to be sure everything works and it does help.

so am I on track and gathering this info correctly?How to: Vmod your 8800 GS/GT/GTS /9600 GS/GSO/GT-vr-resistor-2.jpg

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Old 01-27-09   #102 (permalink)
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That is correct.
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Old 01-27-09   #103 (permalink)
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Looking good.

BTW, make sure to tear off the pin you are not going to use. If you switch pins you will go from max resistance to no resistance. Which could end up badly.
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Old 01-27-09   #104 (permalink)
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Quote:
BTW, make sure to tear off the pin you are not going to use. If you switch pins you will go from max resistance to no resistance. Which could end up badly.
Exactly..an easy mistake..easily prevented Your on the right track so far.

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Old 01-28-09   #105 (permalink)
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ok now plz look at these pics and identify those ground points and what to do next
the value is between 3.97 to 3.99 ohm
Attached Thumbnails
How to: Vmod your 8800 GS/GT/GTS /9600 GS/GSO/GT-28012009199.jpg   How to: Vmod your 8800 GS/GT/GTS /9600 GS/GSO/GT-28012009201.jpg   How to: Vmod your 8800 GS/GT/GTS /9600 GS/GSO/GT-28012009206.jpg  
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Old 01-28-09   #106 (permalink)
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That is correct ^^^ So you will need a 20k Ohm VR set to max resistance,for your GPUv mod..[a 50k can be used, but will bring less precision to the adjustments..so 20k it is].

*Once you solder the VR in line, check for resistance at the VR in the same way..tuning with the VR, to ~3.72k Ohms, should raise the GPUv to ~1.21-1.24v.

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Old 01-28-09   #107 (permalink)
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now i just need a 20k Ohm VR?? how to measure voltage plz mention the points ?? on which points the + and - terminals of VR will be soldered ?? how to measure the resistance of vMEM??
anyother advice
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Old 01-28-09   #108 (permalink)
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Quote:
Originally Posted by nouman View Post
now i just need a 20k Ohm VR?? how to measure voltage plz mention the points ?? on which points the + and - terminals of VR will be soldered ?? how to measure the resistance of vMEM??
anyother advice
Again, on page one, in purple you will see the vGPU measure points. Now I didn't see the vMEM measure points in the pic. The resistance measure point is in the lower left corner.
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Old 01-28-09   #109 (permalink)
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here are some more pictures
Attached Thumbnails
How to: Vmod your 8800 GS/GT/GTS /9600 GS/GSO/GT-28012009213.jpg   How to: Vmod your 8800 GS/GT/GTS /9600 GS/GSO/GT-28012009212.jpg  
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Old 01-28-09   #110 (permalink)
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Quote:
Originally Posted by CL3P20 View Post
That is correct ^^^ So you will need a 20k Ohm VR set to max resistance,for your GPUv mod..[a 50k can be used, but will bring less precision to the adjustments..so 20k it is].

*Once you solder the VR in line, check for resistance at the VR in the same way..tuning with the VR, to ~3.72k Ohms, should raise the GPUv to ~1.21-1.24v.

OK, now I'm a little confused. If his resistance is ruffly 4.0. 4 x 20 = 80K Ohm. Would he not need a 100K or 80K if there is one? Did I miss something?
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