Epox vdd mod- Kill Board? HELP!

[wrx1]

I did the mod for vdd voltage by soldering a pot that is 1kohm and 0.75w.
Board then never booted up .
Board now seems dead as it starts but gives no display and no post beeps.
The LED says "7L".
Removed the mod and it is still the same...

Any ideas?

[wrx1]

I know what I did wrong now! Soldered the right chip but the wrong pins on the opposite side of what I should have soldered

I assumed pin was pin 1 on both sides of the Chip!!!
So I soldered pin 5 and pin 8.

What does this mean?

Can I just replace the IR3037 chip , or would the board be damaged as a whole.

[N8]

wrx1,

Welcome to Xtreme :)

Sounds like a dead board :(

Hope someone can say otherwise.

[Holst]

you conncted the output driver pin to the soft start pin.
if you have removed the mod and your board is still dead then you have killed something.
Possibly just the Vreg, maybee the mosfets either way you wont be able to repair it yourself.

[wrx1]

HOLD THE PHONE.
I had it on the right way but forgot to plug the monitor in!!!

3 hours went by testing and checking .
Now we are in business.
Stuck it on 220 fsb and it is fine.

I´d never though it could be pushed this far at all.

[Holst]

ROFL... haha

no monitor.

nice overclock :D

Be carefull not to increase VDD too far, richbastard smoked his board at 2v.

[KS1]

Lucky you wrx1.
Most modern volt regulators have some sorts of protection built-in e.g. short circuit, overload.
For info, there is a dot mark on pin 1 of the IC.

[gobbo]

Ahh the classic O/Cing mistake, forgetting to plu power in, blown fuse rather than motherboard adn the classic monter cable no plugged it!

Happened to all of us at the best of times!

[Emericana]

last night i reinstalled my auidgy drivers 5 times, the whole time thinking my NF2 drivers were messed up, and tried everything to get sound to work... i mean everything

turns out my speakers werent plugged in

i nearly punched myself in the face :D

i am not makin this up either thats the sad thing lol

[cpulloverclock]

VMEM@2.9v
VDD@1.68v
2*WINBOND 5NS

234 in DUAL DDR
http://membres.lycos.fr/cpulloverclock79/234.jpg

236 IN SINGLE DDR
http://membres.lycos.fr/cpulloverclock79/236.jpg

[|Oc|REvO_HsArC]

Just one question...... how much power (Watts) does the nforce2 chipset consumes at those voltages (1.55v to 1.9v) with a peak speed of 230mhz ??

I'm asking to know which TEC we could use on it... a 50w one? 85w ? i could simply use a 120w but LOL... i dont want negative temp's, just the correct one to keep the chipset at environment temperature or a bit lower...

[KS1]

I don't know if this answers your question or not.
The IC (IRU7313) that handles the power to the chipset has Continuous Current Drain at 6.5Amp at 25C.
If you run the chipset at max 2V, I don't think you need more than 40W Peltier. But you might need to cool IRU7313 and 3037 too.

[|Oc|REvO_HsArC]

Thankx!

i just saw your signature... you have 8RDA and OCz Pc3500!
the same combination i will have in about a week.... you mind if i ask if you have any problem "overclocking" those mems on that board ?

[KS1]

I set 2-3-3-7 at 221MHz FSB --> no problem (with Vdd mod).
2.5-3-3-7 upto 230MHz (but screen flash and 3-mouse-pointer problem again)
I did the Vdd mod already (1.78V) but might not be high enough to
run 230MHz FSB.
Are you serious putting a Peltier on NB?

[|Oc|REvO_HsArC]

a small one..... yah! you see, i hate noise :) i'm already watercooled, and cooling that hot chipset by Air is out of the question, using only water it will still get hot, but.. why not a small Peltier to cool things down enough to have nice performance with ZERO noise....

I have 1 OCz 512mb PC3500 EL.... i heard ppl saying it wont pass 166fsb without problems on 8rda.. but you seem to be OK... dont know what to think now :)

[Pjoeloe]

Originally posted by cpulloverclock
VDD@1.68v
?? You said it was 2 V ??

[|Oc|REvO_HsArC]

Pjoeloe
10. x 220/Vcore@2.1V/VDimm@2.9V, Original Samsung PC2700 @2-2-2 sync with fsb, Vdd mod@1.9V

Thats a sweet mem you got there Pjoeloe! samsung ddr333 doing 220mhz 2.9v is awsome!....
im starting to wonder if that Vdd Mod doesn't care which mem are we using after all!

[|Oc|REvO_HsArC]

that is the Pc2700 king for sure... no doubt! i have one my self...but OCz Pc3500EL took its place.... it was a fine mem...all she did was 200mhz stable on the Tuff KT333! :)

[Pjoeloe]

ocz :( :( go to google and use the word ocz scandal, you will find a few interesting topics about ocz. Ocz uses ordinary samsung(!!) chips, here in the Netherlands a few shops have broken the contacts with ocz because of this "scandals".

[cpulloverclock]

Originally posted by Pjoeloe
?? You said it was 2 V ??
Yes, it's a mistake :(

[|Oc|REvO_HsArC]

Ocz uses ordinary samsung(!!)

? the Pc2700's ? not the Pc3500EL for sure.... or not?

[Pjoeloe]

Ocz uses for the EL series also samsung chips, I`m sure yes. Just what I said, ocz is fake........ but good ;)

[fredgod]

Pjoeloe

I have a samsung pc2700 that does 236@ 2.8volts 2.5-7-3-3

Is urs doing 230 @2-2-2????

[fredgod]

few sandra mem bench

@ 232fsb, 2.7v

[Pjoeloe]

Originally posted by fredgod
Pjoeloe

I have a samsung pc2700 that does 236@ 2.8volts 2.5-7-3-3

Is urs doing 230 @2-2-2????

Mayby with a v-dim mod, but currently with 2.9 Volt/ 220 Mhz 2-2-2-5 is the max. V-dim mod is on the way, only risky :( :) What is your fsb speed with cas 2-2-2-5? (I have the special ctl high speed versions)

[PimpJack]

If it can run advertised speeds than its not fake or scandal. Many companies use other chips. Using pc2700 chips should be quite ok since there is no pc3500 standard. Ofcourse it would be a scandal if they just sold u pc2700 memory and called it 3500. I think all they do is just select "special" chips that will run at those speeds. Hence the lower price.

[Pjoeloe]

Yeah, that`s a good point, maybe you`re right about that. Interesting idea this..... I`m curious if Corsair does this, but I don`t think so. Think corsair uses it`s own chips, don`t know for sure.....

[fredgod]

Pjoeloe

mine runs 2-6-3-3 @212fsb

but uping my ddr voltage doesnot make a diff , rather the ram loves low voltage,any higher then 2.9v it gives blue screens , i have option on my it7max2 about 3.2v.

And this is a ctl cas 2.5 chip

What should i do to get it running @ 220fsb like u with those timings.
Should i do some burn-in? or .....

But will cas2 make a diff , i get high bandwith 3525 in sandra.

[Pjoeloe]

Don`t know, some samsungs are good overclockers, some don`t......