Forum - BIOS Modding Guides and Problems » Nvidia 12v sense Bios modding.

#1 | Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 4:11 am

So long story short I have a GTX Titan (original) and after some modifications and blowing up most of the card, when I power the card up I get a message saying to plug in the power connectors. Currently that is impossible (half the card is missing). Is there any bios mod to disable the check for the power connector sense lines? I'd de-solder the bios and flash a modified bios on to it.

Cheers.

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#2 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 6:00 am

@coldwove - Half of card is missing and you're trying to use it? I doubt that would work even if removed BIOS check for power supply line connections.
Only a few people I know that could possibly help with that here... maybe @SoniX or @CodeRush or @Mov AX, 0xDEAD maybe some others but I can't think of who right now

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#3 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 7:18 am

I solved it :D scraped on the back of the core to reveal a via and soldered it via a resistor to 3.3V. works fine now.

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#4 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 8:54 am

@coldwove - Good you figured it out! I was thinking about mentioning soldering power to a trace, but assumed you'd have to do that for 6 traces or more and didn't think you'd be able to spot them all.
So how does this run with half the card broken off?

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
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#5 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 9:15 am

Card looks like this:

I soldered some temporary connectors to the Vcore, Vmem and PLL rails, added some external VRMs and with the final solder job where I pulled gpio12 high it now works. I'll need to beef up the power connectors before I go and use it properly, but for now it's alive again.

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#6 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 10:14 am

Amazing! Why did you cut it, or did it just break off?

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
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#7 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 10:21 am

A culmination of little accidents about 4 years ago resulted in an internal short between 12V and GND on the power generation side so I took the angle grinder to it. It has been sitting untouched for quite some time and I finally decided to get around to making it run.

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#8 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 10:46 am (Last edited: Thu Feb 14, 2019 10:46 am)

That's so cool you were able to make it run again I though that was a clean cut So with no VRM side, how is power delivery being managed and delivered?

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
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#9 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 10:57 am

I have quite a few epowers which are just stand alone vrms which I can hook up to whatever i'm testing. Makes life easy for when power rails are missing.

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#10 | RE: Nvidia 12v sense Bios modding. datum

Thu Feb 14, 2019 6:13 pm

You do bitcoins don't you

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
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#11 | RE: Nvidia 12v sense Bios modding. datum

Fri Feb 15, 2019 2:25 am

No not at all I just do a lot of overclocking and end up blowing a lot of VRMs. I'll use something like this for the power rails:

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#12 | RE: Nvidia 12v sense Bios modding. datum

Sun Feb 17, 2019 9:08 am

Beefy heatsink there, and tons of power input, wow! Do you do extreme overclocking with LN2

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
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#13 | RE: Nvidia 12v sense Bios modding. datum

Sun Feb 17, 2019 2:44 pm

Zitat von coldwove im Beitrag #9
I have quite a few epowers

you lucky guy. I don´t know how long I am searching for a working one :P

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#14 | RE: Nvidia 12v sense Bios modding. datum

Mon Feb 18, 2019 11:48 am

No LN2 yet, only DICE, i'm still looking for a reasonably priced dewar :/

@oldirdey I think EVGA is still selling their epower V on ebay for 100usd and there are a few assorted ones hwbot for 70-100usd.

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#15 | RE: Nvidia 12v sense Bios modding. datum

Fri Feb 22, 2019 8:06 pm

Dice is always nice

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
I view the forum like this, please bump your thread 1x every 24-48 hours if no reply

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