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Malves,
Just came back from getting all 3 mods done. In the middle of changing those weak-as Antec Fans with more powerful ones from my dead Enermax 350w. Gonna test it to see if it works & then report back.
IC7-G VTT mod to be done on Monday & then getting some XMS-3500 & I'm there:banana:
Cheers for the advice M8
:toast:
edit: It's a pity my OCZ Gold 466 don't like high voltages & my A-Data DDR500 won't do any more than 544@2.5-5-4-4 mo matter what amount of volts I give it
Hey, Minnyboy
Good to hear on the mods.:) I still gotta get my lazy @ss outta the chair and do the 12v rail mod. :D
Good luck, my friend. Hope you get some crazy MHZ. ;)
ALright, well I modded the 3.3 line succesfully ( my first VOLTMOD!!!!! ) and now im goin to the 5 v and 12 v. here are my questions b4 i get started. i have a 33 ohm fixed resistor and a 10 k vr for the 5 v line, but what resistance should i set the vr to b4 i solder it and start up? also, for the 12 v line i have a 68 0hm resistor and a 10 k vr, and my same question earlier applies to this....what resistance should i set the vr to b4 soldering? thanks guys. this thread just gave some new life to a power supply that i thought sucked...:toast:
makatee,
set the resistance of your 10K Ohm VR to max resistance (10K Ohms) so that when everything has been modded, you won't get much of a rise on your lines.
Very similar to your 3.3v mod. You set your 1K Ohm VR to 1K Ohm before you started right?
Godd luck with your mods. Mine's doing really, really good m8 & I hope your's turns out just as well as mine did.
Cheers :toast:
This is good reading... glad i made it to the end before posting any questions.
I think makatee's questions and the answers everyone gave is going to make this mod easy.
I have a few questions myself though. Does it matter if you do the mod closer to the ATX connector or closer to the actual PSU case?
Also for the "ground". People keep referring to the black cables or whatever. I know in the ATX connector diagram that there are black cables that are referred to as ground.
So as a ground, can i strip the black cable and attach the ground wire from the potentiometer to this wire?
I just want to make sure this is possible before I did the mod as well.
Also, I'll be cutting the thin vsense lines correct so I can add in the resistors?
From top to bottom:
1. Doesn't matter if it's close to the ATX connector, inside the PSU, or half way between both.:)
2. Yes, you can use the PSU's ground (black) wires for your ground.
3. Yes, the sense line is the one to be modded.
shimmishim,
I actually got my friend to do the mods for me.
What I got him to do was open up my PSU & do the job inside & have the VR coming out of some gaps where the cables come out since I have to put it in my Vapo & my PSU has to mount sideways. I have double-sided taped the VR's I have so I can easily acces it.
My friend actually done the it really neat as I think that having the mods done closer to the ATX 20pin makes it a bit hard to mount the VR's without cable clutter.
I have included a pic of where I've place my VR's.
What the guy mean when they say that you can just use a black cable is just cutting the insulation of one of the black cables from the ATX 20pin connector & soldering the ground to that as the black cables you see on the 20 pin sonnectors are basically ground cables.
My M8 did it a bit differently, he actually took the PCB of the PSU out & soldered the groung to one of the ground cable soldering joints underneath the PCB of the PSU.
Ignore my writing on the VR's, I just did it so that I know which way to turn the screw on the VR to give it more volts. I did it wrong though but haven't been bothered to scrub that ink off & do it in the right direction.
Good luck with your mods M8.
edit: I used the smaller 25 turn (I think VR) as I think it is better looking..hehehehe
Looks nice man. Buy your friend a 6pack. :hehe:
THanks everyone for this great thread. I finally did the mod and now all is well and this power supply is finally worth what i paid for it....this is my first vmod!!! and it worked! :toast:
Thanks guys!
I'll be doing this mod as soon as I get back to school.
It'll be my Friday afternoon project :)
Then I'll be settin' up the prommy WOO HOO!
i can't seem to find a 36 ohm resistor on the radioshack webpage.... does anyone have the exact part number?
thanks!
and if i can't find a 36 ohm, would 47 ohm fixed resistor be okay for the 5 volt line?
thanks!
sorry i was able to find a 33 ohm resistor at radioshack.com.. i think that should suffice :)
I used a 36Ohm fiexed resistor with a 10K Ohm VR so that 33 Ohm fixed resistor should be fine.Quote:
Originally posted by shimmishim
sorry i was able to find a 33 ohm resistor at radioshack.com.. i think that should suffice :)
if u need ground, dont even need to cut any ground wire, there's several spots on the PSU pcb u can use as a ground point..
That's exactly what my frien did for me. Works beautifuly as well. if I ave the time i will open up my PSU & post some pics of what the inside of my PSU looks like. He actually soldered the ground to one of the ground points underneath the PSU.Quote:
Originally posted by Ragnarok
if u need ground, dont even need to cut any ground wire, there's several spots on the PSU pcb u can use as a ground point..
I'm wrapped that my friend didn't listen to me & persisted on his method. I gave him some old slot1 P3 mobo's as a gift for doing the mods for me. he's done my IC7-G Vmem mod, 9800pro Vgpu & Vdd mods as well as my PSU mods. He has surprised me in the quality of workmanship he has done for me.
Next up is my IC7-G VTT & 9800XT vmods.
BTW, has anyone experienced any problems when setting the 12v & 5v lines over 5.3v/12.3v? My 550w Antec TP has this prob where if I set the lines I mentioned any higher than 12.3v my PSU won't start.
Pity he doesn't drink beers, otherwise I'd shout him a few slabs.
I wasn'[t planning on cutting the ground wire. I was just going to strip a part of it so I could attach the ground wire from the VR to the black ground wire.
:)
Just strippin' it.. not cuttin' :)
:banana:
shimmishim,
I know that you weren't going to cut the "ground", as I wouldn't either.
If you do the "open PSU" method, check where one of you ATX 20pin ground leads go to & flip the PSU pcb over & solder a ground onto that.
Works good for me. Anyway you do it & it works is good so get at it m8. Good Luck while you're at it m8.
3 more days & I'll be able to test this GREAT mod out, my BH-5's are on the way.:banana: :banana:
I was kinda shattered when i bought the Antec as it would not hold it's rails like my Enermax 430w. B4 the mod, my Antec was 3.2v, 4.8v, 11.7ishV while my Enermax was 3.35v, 5.15v, 12.26v.
After the mod, I'm as happy as can be:banana: .
Was comtemplating on getting the 550w Enermax but that can wait til one of my PSU dies now. hehehehehe
thanks for the tip minnyboy!
i'll do that instead...
but all three wires should fit there right? (one ground from each volt rail)
i haven't busted open my antec yet.. i will do it this afternoon.
just finished up the mod!
looks good...
except i measured teh voltages as
3.3 --> 3.65
5 --> 5.3
12 --> 12.5
volts show up as
3.47
5.16
12.11
board to blame?
up the volts now?
thanks!
Absolutely normal, everybody's board does that. Since no electrical components are 100% efficient, some voltage is actually "lost" (converted to heat) as it zips through your motherboard's power circuit. This is the reason electrical components output heat.Quote:
Originally posted by shimmishim
just finished up the mod!
looks good...
except i measured teh voltages as
3.3 --> 3.65
5 --> 5.3
12 --> 12.5
volts show up as
3.47
5.16
12.11
board to blame?
up the volts now?
thanks!
shimmishim,
I measured my voltages with my MM & it's shows up right but through the mobo bios it loses some volts.
Better to believe what the multimeter says.
Anyways, good to see your mod turned out well.
Where'd you end up soldering the ground to?
When I opened up my PSU, I could ony see 1 ground wire for my mods. I presumed that my friend had soldered the three grounds to that 1 & then soldered it onto the back of the PSU ocb.
i ended up using the black ground cables after all...
everything works great!
except after i stuck in my new 3.0C, my board just died.. no boot or anything :(
so i gotta get a new board... but i can't figure out which one to get...
Off topic but WTF happened? Too much power? another IC7-G would be good & doesn't cost mucho for the mods.Quote:
Originally posted by shimmishim
i ended up using the black ground cables after all...
everything works great!
except after i stuck in my new 3.0C, my board just died.. no boot or anything :(
so i gotta get a new board... but i can't figure out which one to get...
Maybe PSU killing the board?
__________________________________________________ __
P.S 100 posts finally!!! Now to go into the goodies shop
i doubt it..
it booted before with my 2.4C
it was only after i switched the cpu did i start having problems...
with the hardware monitor for abit board...
3.3 --> 3.47
5.0 --> 5.16
12 --> 12.11
i setup the voltages as 3.65, 5.3, and 12.3 and measured with a multimeter.
my new voltages are:
http://www.johnshim.com/mods/psu mod.JPG
seems that lots of energy is loss between the psu and the mobo.
i tweaked the voltages a little more
3.3 --> 3.7
5 --> 5.4
12 --> 12.4
it's amazing how much it drops. oh well! thanks for the help everyone!