OCN's V'mod Squad's, Volt Mod Essentials! - Page 19 - Overclock.net

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post #181 of 1500 Old 01-14-2010, 03:31 PM
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post #182 of 1500 Old 01-14-2010, 03:36 PM
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Originally Posted by superj1977 View Post
Ahh okay Im sure its 1.8k now. So to determine the VR you would need allyou have to do Is take the resistance reading and multiply it by 20(common rule) and that comes to 1.897kx20=~38k. So a 50k VR would suffice for the mod.

What size VR's do you have?
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post #183 of 1500 Old 01-14-2010, 03:41 PM
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Zilch for the variable resistors,was hoping to do pencil mod as my soldering is uttery awful.
Can pencil mod be done you think?
I could maybe solder at later point but need lots of practice.
Had trouble last week soldering wires back onto fan controller,lol,im bad.
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post #184 of 1500 Old 01-14-2010, 03:44 PM
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Originally Posted by superj1977 View Post
Zilch for the variable resistors,was hoping to do pencil mod as my soldering is uttery awful.
Can pencil mod be done you think?
I could maybe solder at later point but need lots of practice.
Had trouble last week soldering wires back onto fan controller,lol,im bad.
Yeah a pencil mod would work As well, let me look at your pix of your card and I will edit them in paint and show you which resistors to measure so you know which one is coming off the FB. Give me just a moment to look at your Pix.

EDIT:Okay take the red terminal and measure the resistance on the points marked in the pic. you should get the exact same reading on one of those as you did pin #20. That will be your alternate mod point and will be the resistor that you pencil to lower the resistance and raise the voltage
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post #185 of 1500 Old 01-14-2010, 03:54 PM
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Ok im getting excited now,was supposed to be doing course work but,balls to that.
Back in 5 min.
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post #186 of 1500 Old 01-14-2010, 04:20 PM
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Ok im getting excited now,was supposed to be doing course work but,balls to that.
Back in 5 min.
Just make sure that you do your homework, education is of the utmost importance!

Any luck with the resistors?
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post #187 of 1500 Old 01-14-2010, 04:32 PM
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Ok,Top=1,Bottom=4
1 no
2 no
3,initiall reading of around 1.66 then goes up to 1.99 then gone?***?
4,initiall reading of 1.66 thengoes up to 1.99 then disapears??

Either my meter is goosed or someone sneaked lsd in my last cuppa t,i cant belive i get strange readings like this.
I have tried with different ground areas and rechecked pin 20 and still get my original reading but upon measuring resistor 3+4 i get a quick reading on both and then it shoots up and disapears.
Please tell me its ok and you know exactly whats going on?
Im gona keep trying for few more minutes just incase its me being a gimp.
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post #188 of 1500 Old 01-14-2010, 04:45 PM
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Hmmm...that is some heavy fluctuation going on.

1. either those arent the resistors
2. your DMM is bad but unlikely since it doesnt fluctuate or vary its resistance on pin 20
3. Is there another resistor being hid by the terminal in the pic I marked?
4. Not a good connection when measuring resistance

EDIT:Okay man I have to make dinner for my son so I have to log off for now. do me a favor and measure every resistor you can find in that area(would have an ex..R204 or whatever. Also its possible that the resistor is on the other side of the card so flip it over and measure the resistors underneath that chip on the other side and you will get a reading dead on or very close to that reading from #20. ill check back in a little bit
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post #189 of 1500 Old 01-14-2010, 05:08 PM
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Changed meter setting to 200k and on res 3 i get 02.0 solid no drop.
on res 4 i get 02.0 solid no drop.
Just had little probe around at tiny resistors in row above chip,theres 9 in a row together then 2 to the right,on the 9 together i get the same as pin 20 on the first 3 on right.
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post #190 of 1500 Old 01-14-2010, 05:22 PM
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Ok then check this out.
Looking at a close shot of chip i can see that as the trace leaves pin 20 it passes through a very small resistor,so measured resistance and at point 2 i get no resistance but at point 1 i get 1.880 with meter set to 2k.
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