The trimmers suggested for this mod are way too high I think.. between 3.3 and 3.8v with a 1k trimmer is under 1/2 a turn for me on my antec 400w smartpower.. 5/12v is just as bad, if not worse.
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The trimmers suggested for this mod are way too high I think.. between 3.3 and 3.8v with a 1k trimmer is under 1/2 a turn for me on my antec 400w smartpower.. 5/12v is just as bad, if not worse.
STEvil, what size trimmers do you recommend then?Quote:
Originally posted by STEvil
The trimmers suggested for this mod are way too high I think.. between 3.3 and 3.8v with a 1k trimmer is under 1/2 a turn for me on my antec 400w smartpower.. 5/12v is just as bad, if not worse.
500 Ohm trimmer for 3.3v, 5K Ohm trimmers for the 5v & 12v?
I can make fine adjustments with my 3.3v line. Got one of those 25 turn 1K Ohm trimmer set up on that line.
I'm gonna play with mine later 2nite to see if my 5v & 12v will play my game with me....
Will a 5K Ohm trimmer help me get any higher than 12.2v, 5.2v?
I'm doubting it but what's the harm in asking????
Is there a way to turn off that p.o.s BS overvolt protection? If not turn it off, is there a mod like replacing a resisitor/capacitor (if it is one of those that control the OVP???
Is it possible to say take a OVP (over voltage protection) device from say a dead Enermax 350w or Topower 520w PSU to raise the limits of my 550w TP????
Any comments? Is it do-able??Or am I just dreaming being somewhat a nOOb when it comes to PSU sh*t???
Cheers,
Minnyboy
I would have used a 500k on my 3.3v, 1K for my 5v, and 2k for my 12v.
But whether that would work or not in reality...
To fix the overvolt protection I think we would need to find out what chip controls it then add a resistor to it...
IT WORKED! Thanx Minnyboy...I followed your suggestion about taking all the mods off and resoldering the lines together and it worked. I then did the 5v mod and it worked. i did the 12v mod and it still won't adjust but isnt hurting anything. i did the 3.3v mod and it wouldn;t start up again....i decided to swap out all the parts in the 3.3v mod for brand new wire, vr, resistor, etc. It worked beautifully. I guess i screwed up a resistor or something, weird. I'm sittin pretty at 12.08 (will NOT adjust) 5.2, and 3.5. Thanks everybody for all their help. My only question is why won't the 12v mod work? I've taken it off and reapplied it 3 times now...and it the lowest resistance it will give me is 9.01. it is the exact same pot i used for the 5v mod and that one goes almost to 0, what gives? I'm using radio shack pots, thats probably the problem. I wonder if its a bad one. No matter how much i turn it gives me the lowest 9.01k and the highest 9.78k. I hate radio shack pots...
computerpro3,
what value resistor did you use for the 12v line?
I used a 68Ohm fixed + 10K VR.
Maybe go out & get yourself a few more 10K + 5K VR's to play with?
What I did was buy like 5 of each VR I needed & just used the MM to adjust them all to see what was the best ones to use & just throw the others somewhere (I marked their highest resistance(?) on them though for future use).
That way, I was able to be 100% sure that my mods worked first time round.
Maybe give that a shot?
Cheers,
I also used a 10k vr and 68 ohm fixed. I can't be arsed to remove the psu again from the case at the moment cause I did an hour long wiring job last night, but evntually I will try another 10k resistor. The 68 ohm is good according to the multimeter, but the 10k can't be adjusted lower than 9k ohms at all which is limiting me at 12.08.
edit: I mentioned at hardforums that i had modded my trupower and my pm box was swamped with questions about how i did it so i wrote a guide....I think i got everything right, but would like the experts to make sure (don't wanna fry anybody's pc lol). thanx heres the link
Psu Modding Guide
Would soldering a 10ohm fixed resistor and 1k VR on the 3.3v line void the warranty?
Also does cutting the wires on a PSU void the wires? Like if I were to remove the 6pin molex...completley.
lol yea the warranty would be gone
Awww man...dont know if I should do this until I get my computer working (waiting on an OS)
I'll get the supplies anyways.
I got a few Qs.
I was at Radioshack and they didn't have a 36ohm fixed resistor or 68ohm fixed resistor.
All I could find was a 33ohm fixed resisitor. Will this work for what I want to do or will I need 36ohm?
Also the 10ohm and 33ohm resistor I got are both 1/2 watt with 5% tolerance. Will these do fine?
Lastly, the VRs are both 1.25 watts and 15 turns. Will these suffice?
Where abouts in this wide world are ya? Reason for me asking is that I'll send some to ya by snail mail...Quote:
Originally posted by toolbox
I got a few Qs.
I was at Radioshack and they didn't have a 36ohm fixed resistor or 68ohm fixed resistor.
All I could find was a 33ohm fixed resisitor. Will this work for what I want to do or will I need 36ohm?
Also the 10ohm and 33ohm resistor I got are both 1/2 watt with 5% tolerance. Will these do fine?
Lastly, the VRs are both 1.25 watts and 15 turns. Will these suffice?
Any good electronics shop should have what you're looking for.
I've got meself like 50 x 68Ohm 1% fixed resistors & 80 x 10Ohm 1% fixed resistors lying around... I ordered like 10 of each & the vendor sent me 10 packs....Also got around 5 x 1K 25 turn trimmerss, 5 x 10K 15 turn trimmers, & a lot more 1K 15 turn trimmers as well as some others...
I'm offering to send some to you although it may take while if you're a long way from AUS...
I may be wrong but I think you sould use two of those 33Ohm resistors inline (66 Ohm total) & then solder the VR to them as per the instructions...
I'm not sure what you mean by 1.25w trimmers???? Ask the Radioshack guy (who by the looks of things doesn't know squat about electronics) for a 1K trimmer or whatever ones you're after.
Cos I don't know your whereabouts, I can't really help you much in finding another place that would stock the items you're after...
Remember, I'm willing to help you out & send you the resistors & trimmers to the values you need.
All you gotta do is ask or email me. Look under my profile or send me a PM with an address to send what you need & I'll get them to you ASAP....Normally takes roughly 7-10 days for me to send mail from AUS to US....
Other than that, I can't help you more....
Wow man thats very helpful, but by snailmail it will take a week or so. Might be cheaper and easier to just find a place. I mean, I live in one of the biggest city in the world (L.A.) I think I could find a speciality store :P
Thank you very much for the offer.
But would the parts I just bought would they work?
Toolbox - that should all work fine.
Thanks. So 33ohms will do instead of 36ohms.
What could I use to try to get 68ohms?
I guess I might have to find a speciality store.
**EDIT**
Would you guys mind if I reposted this in another forum and used the images from this thread to help explain. Its a great easy mod and this has a lot of info that can be weeded out from the thread.
I ain't sure if I've broken any rules but I've linked to this forum before...Maybe ask the user who posted the pics. I'm sure they'll approve but it's just courtesy to ask.Quote:
Originally posted by toolbox
Thanks. So 33ohms will do instead of 36ohms.
What could I use to try to get 68ohms?
Would you guys mind if I reposted this in another forum and used the images from this thread to help explain. Its a great easy mod and this has a lot of info that can be weeded out from the thread.
As for the 68Ohm Q....Someone please correct me if I'm wrong but couldn't you solder the 33 Ohm resistors inline to to become a 66 Ohm resistor?
Basically you're just adding trhe values & the outcome is damn close to 68 Ohms....
Yes, you can put two 33's inline to get 66, which would work fine with this mod.
Is there anything wrong with doing just the +3.3v mod and not the +5v and +12v? My Enermax 430w only has sense lines coming out of the +3.3v line, but I'd still like to do this mod to improve Vdimm stabilisation and memory overclocking.
Is the +3.3v mod worthless without the +5 and +12v mods?
Yes you can do the 3.3v mod by itself.Quote:
Originally posted by Gogeta
Is there anything wrong with doing just the +3.3v mod and not the +5v and +12v?
If you got ram that likes volts or your 3.3v line sucks then the 3.3v mod helps heaps.
IMO modding the 12v line does not help in Ocing your CPU (might be wrong with my assumption though).
The 3.3v mod helps more IMO as it allows your ram to run to it's fullest potential (with the right ram, that is).
If ya got BH5/BH6 or maybe even CH5, do the mod. My theory is that even if your CPU doesn't OC as good, having your ram running really tight timings will boost perforamnce (probably know that already).
IMHO do the mod, why not? it's the 3.3v that helps the most for performance if I'm correct...
5v line doesn't improve your performance unless you go sick & mod a 5v line to your VC (iirc someone has done that).
12v line might improve your OC but if you don't have a sense wire to mod then you're stuck with maybe a 5Mhz less OC (again, this is just my opinion).
I gained so much more performance with my BH5's with the 3.3v mod. Couldn't do DDR433 @ 2-5-2-2 at 2.8v (IC7-G), now that my 3.3v is at 3.51v, my BH5 can do DDR510 (2-5-2-2-@3.3v Single Channel). Going Dual Channel, I can do DDR470 (same timings & volts).
Can also use GAT now as well at DDR460 (auto, enhanced, 5 clocks, enabled, enabled), B4 the 3.3 mod, I had to leave it at auto & disable the last 2 DAT settings..
I'm rambling now...
Do the mod, you won't regret it.
Cheers
5v and 12v can each help depending on whether the CPU is driven by the 5v or the 12v rail.
If your board drives the ram with the 5v rail, then the 3.3v mod wont help...
All that aside, these mods finally pushed me over 19k (check sig) :D
Ok, thanks guys. I just got some Mushy PC3500 Lvl2, so I'm definitely going to do this mod. DDR510 at 2-5-2-2!!! Man, I'm hopin and prayin mine will go that high. If that happens, my 2.4b will finally see 3.6GHz (200fsb) :D
I am curious about this mod myself. I want to perform is because my 5V and 12V drop down kind of low after a OC. I wanted to know if someone here would be willing to perform it for me.
If interested PM me PLZ.
THX,
Brian
i'd like to do my Qtecs rails, yet only the 3.3volt has a sense line
Quote:
Originally posted by j2me_tech
hi guys,
i'm just wondering if i can just change the pot on the front panel of a tc550w?
How about bypassing the 3.3v pot altogether? Just a straight wire.Quote:
Originally posted by pc ice
yes you can but it wont do what you think it will.. i know i have tried it.
As all the vr's I have measured (ie 10K/1K), do not go any lower than about 3K/250 ohm. If you removed the 1K pots from the TrueControl's front panel it seems to me that you would get less resistance and more voltage out of it.
Did you try that ice?
well wanted to mod the 3.3v line on my antec trueblue 480. did the mod using an 10ohm resistance and put a vr (10kohm) to ground. well the mod seems not to work for me. voltage doesnt increase in bios and i turn the vr slowly towards 0 ohm and watch voltages in bios. then suddenly pc turns of and i must turn alittle bit in opposite direction?. any one an idea?
You are kicking in the ovp for the psu I am betting.
I wouldnt go by what the bios says for voltage, use a multimeter and plug it in like this:
http://www4.ncsu.edu/~rwbradl2/CSC251/images/New3.3.jpg
The red probe goes into that flat connector with the 5 wires running to it. 3 wires are black, 2 are orange, and one is red. The orange wires will give you 3.3v readings. I wouldnt go over 3.7v.