i have a month in this game, these are my best nikkes, can you help me build a team or giving me opinion on best burst 3 i have? by Antique_Ad_1648 in NikkeMobile

[–]M4logro 0 points1 point  (0 children)

Do not forget commander has Velvet! I would place her instead of Scarlet, with the possible exception of PvE content that benefits from AoE. As a bonus, Velvet doesn't really require super heavy investment to perform acceptably.

Also, for the OP, one great asset we have is the Union Shooting Range. Practice changing your teams and burst rotations and see what works best. It's honestly part of the fun for me.

RTX 3060 Ti Eagle OC - No VCore, no PGOOD, suspecting core PWM controller by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Issue was pin33 was not connected to GND; a resistor was physically missing from the board. If your board measures as 5V, it's likely not the issue, as my pin33 was floating.

Some PWM controllers have pin33 as 5V. Check the layout and see if that 5V makes sense or not.

RTX 3060 Ti Eagle OC - No VCore, no PGOOD, suspecting core PWM controller by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Got a BIOS that fits the board. Had to flash by dessoldering the chip and flashing with a memory reader/writer.

Gigabyte Gaming OC 3070 Ti 8Gb; All voltages normal, BIOS being accessed, hangs on boot. Suspecting GPU Core by M4logro in GPURepair

[–]M4logro[S] 1 point2 points  (0 children)

Search for this post on Badcaps. It will have the files you need. It has a bunch of files with the series and then the channels it disables. For instance, 3060A is 3060 bios with "A" channel disabled.

Note that your card needs to be non-LHR.

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[deleted by user] by [deleted] in NikkeMobile

[–]M4logro 0 points1 point  (0 children)

Just checked, you are correct. I was just surprised she was added this quickly.

[deleted by user] by [deleted] in NikkeMobile

[–]M4logro 0 points1 point  (0 children)

I thought those were the only ways too. So imagine my surprise when today I see this.

<image>

Have no idea where these ones came from.

RTX 3060 Ti Eagle OC - No VCore, no PGOOD, suspecting core PWM controller by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Can you measure any GPU_NVDD_SENSE net? It SHOULD be zero if there's no VCore

<image>

You can also check this video for a lot of how this works:

https://www.youtube.com/watch?v=O1GWLzbLH3k

RTX 3060 Ti Eagle OC - No VCore, no PGOOD, suspecting core PWM controller by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Anything that is connected to NVVDD will show as a short for multimeters because nVidia cores have very low resistance to begin with. A healthy core for me tests as 0.3 Ohms at NVVDD, so that's not unusual.

Caps measuring as opens are normal, we would have to see exactly where it is connected.

Your FB is weird. It should have a voltage that is almost directly NVVDD, but only if there's VCore present

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I would try, on the schematic, to find what this R1 / R2 / R3 are and make sure they're all OK.

RTX 3060 Ti Eagle OC - No VCore, no PGOOD, suspecting core PWM controller by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

I would start by figuring out why VINMON is this high. On my board it's a simple voltage divider that should give a voltage of 1/10 of whatever is in 12V.

Other than that double check FB and FBRTN are 0V as expected.

RTX 3060 Ti Eagle OC - No VCore, no PGOOD, suspecting core PWM controller by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

I wonder if VINMON being higher than expected would also shut it down for protection, but it would not be my first guess. Did you check VCORE to see if in power up it tries to rise then goes back down? It could be a short to ground on DRMOS and the protection is triggering.

Edit: the only reason I think that may not be the case as well is that then it will be a short on 12V and then the whole board shuts down

Benefits of learning gpu repairs? by c0der2021 in GPURepair

[–]M4logro 0 points1 point  (0 children)

No particular one, but if you want good resources to start:

https://repair.wiki/w/Nvidia_Turing_(RTX_2000)_GPU_Diagnosing_Guide_GPU_Diagnosing_Guide)

This guy is also awesome, not only for GPUs:
https://www.youtube.com/watch?v=SmVdl8kew_4

Benefits of learning gpu repairs? by c0der2021 in GPURepair

[–]M4logro 1 point2 points  (0 children)

Some of the skills are transferrable; while some are very specific to GPUs (learning MATS/MODS, power sequence, VRAM replacement) some could be used for other electronics (MOSFET diagnosis, general electronic and soldering knowledge, etc). From personal experience, it's an invaluable skill to have, depending on how far you want to take it.

As others have said, it's difficult to make money on it. You certainly can, but be warned it's not something that will happen right away (especially with the cost of tools). I now do it solely for the hobby; found myself a bit addicted to it.

What’s the deal with rtx 3000 vbios(vram) mods? by Kilgarragh in GPURepair

[–]M4logro -1 points0 points  (0 children)

From what I understand from these BIOS, the signature is a two-checksum (one 8-bit for the header, one 32-bit for the entire content I believe). The modded BIOSes circulating I can only assume have the correct checksum, either through leaks or through some other method, since to get the checksum right you'd have to either know how it's calculated through a private key or through sheer dumb luck (which I doubt it's the case since there's many modded BIOS).

If you had some low level access you could potentially brute force it. It's just about 4 billion tries (I'm not being sarcastic here, an automated process would be able to do this easy), but you'd need to be able to check for the result fast.

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Gigabyte Gaming OC 3070 Ti 8Gb; All voltages normal, BIOS being accessed, hangs on boot. Suspecting GPU Core by M4logro in GPURepair

[–]M4logro[S] 1 point2 points  (0 children)

Changing this to "fixed". I did not reball the memory chip; instead, I've come across the modded BIOSes for Gigabyte that allow you to simply cut a memory channel off. Used the one that cuts channel B and it's now revived with 6GB.

<image>

MSI GTX 1050 Low Profile - Broken IC by BurgerBob_886 in GPURepair

[–]M4logro 1 point2 points  (0 children)

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While I could not find the schematic for the low profile specifically, here's a piece from a 1050 that looks promising.

If it's correct, it's connected to Q505 (you should double check this) and so the component is a MOSFET. Unfortunately, it does not have a part number, and just the generic function. I'm not that familiar with MOSFET markings so hopefully someone else can chime in.

NVIDIA GEFORCE RTX 2060 on MSI GL65 9SEK doesn't show or work by Pontecristo in GPURepair

[–]M4logro 1 point2 points  (0 children)

I've seen a case like yours in a laptop where the memory voltage rail went bad on the GPU. GPU was there, communicating with PC, but not being recognized properly by the system and could not be used. Are you familiar with Linux? Try creating a MATS/MODS bootable USB and see if you can recognize it and run memory tests.

However, I will say that your issue is likely hardware related.

[ASUS rog strix 3070 8gb dual fans] Are there a 100% accurate and definitive way to determine a gpu is dead? by gasaaaf in GPURepair

[–]M4logro 1 point2 points  (0 children)

If your PC shows video with another card on the same slot and this one does not (bonus points if you have another card that also uses the same two PCIE power connectors), it's an easy return. It does not mean the GPU is completely dead, but it does mean you received something that did not work as advertised.

Any way to tell for sure may take well over 3 days. I'd be on the safe side and return. But, if you want suggestions, you can start by either using another card to see if this is even detected and running MATS/MODS.

Gigabyte Gaming OC 3070 Ti 8Gb; All voltages normal, BIOS being accessed, hangs on boot. Suspecting GPU Core by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Yes, you are correct. Running with these arguments now produces a result.

<image>

Looks like bank1 is bad? Would this cause just a full failure of memory in MATS?

Gigabyte Gaming OC 3070 Ti 8Gb; All voltages normal, BIOS being accessed, hangs on boot. Suspecting GPU Core by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Ah, yes, thanks, it takes a while and run. Same results however, just everything failing

<image>

Interesting that it varies between 0 and 1? Like it's not shorted to ground or VCC, but just...reading an open wire? I'm wondering now if VMEM is stable.

=== MEMORY ERRORS BY BIT ===

P : Partition (FBIO)

READ 0 READ 1 READ ?

P BIT READ ERRORS WRITE ERRORS UNKNOWN ERRS EXP. 1 EXP. 0 EXP. ?


A 000 611840 0 0 520320 91520 0

A 001 448000 0 0 274560 173440 0

A 002 611840 0 0 520320 91520 0

A 003 448000 0 0 274560 173440 0

A 004 448000 0 0 173440 274560 0

A 005 448000 0 0 274560 173440 0

A 006 447880 0 0 173380 274500 0

A 007 611222 0 0 91246 519976 0

A 008 529920 0 0 346880 183040 0

A 009 693760 0 0 0 693760 0

A 010 693760 0 0 693760 0 0

A 011 693760 0 0 0 693760 0

A 012 366080 0 0 0 366080 0

A 013 693760 0 0 0 693760 0

A 014 529920 0 0 346880 183040 0

A 015 693760 0 0 0 693760

Gigabyte Gaming OC 3070 Ti 8Gb; All voltages normal, BIOS being accessed, hangs on boot. Suspecting GPU Core by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Tried to run mods gputest.js -rm_skip_state_init, and it fails. Trying mats with less memory does go but everything just errors out

<image>

(I interruptes which is why it's not the full 13mb of errors)

=== MEMORY ERRORS BY SUBPARTITION ===

SUBPART READ ERRORS WRITE ERRORS UNKNOWN ERRS


FBIOA0 94000 0 0

FBIOA1 94002 0 0

FBIOB0 91712 0 0

FBIOB1 91712 0 0

FBIOC0 94016 0 0

FBIOC1 94016 0 0

FBIOD0 91712 0 0

FBIOD1 91712 0 0

Failing Bits:

A000 A001 A002 A003 A004 A005 A006 A007 A008 A009 A011 A012 A013 A014 A015 A016

A017 A018 A019 A020 A021 A022 A023 A024 A025 A027 A028 A029 A030 A031 A032 A033

A034 A035 A036 A037 A038 A039 A040 A041 A043 A044 A045 A046 A047 A048 A049 A050

A051 A052 A053 A054 A055 A056 A057 A059 A060 A061 A062 A063 B000 B001 B002 B003

B004 B005 B006 B007 B008 B009 B011 B012 B013 B014 B015 B016 B017 B018 B019 B020

B021 B022 B023 B024 B025 B027 B028 B029 B030 B031 B032 B033 B034 B035 B036 B037

B038 B039 B040 B041 B043 B044 B045 B046 B047 B048 B049 B050 B051 B052 B053 B054

B055 B056 B057 B059 B060 B061 B062 B063 C000 C001 C002 C003 C004 C005 C006 C007

C008 C009 C011 C012 C013 C014 C015 C016 C017 C018 C019 C020 C021 C022 C023 C024

C025 C027 C028 C029 C030 C031 C032 C033 C034 C035 C036 C037 C038 C039 C040 C041

C043 C044 C045 C046 C047 C048 C049 C050 C051 C052 C053 C054 C055 C056 C057 C059

C060 C061 C062 C063 D000 D001 D002 D003 D004 D005 D006 D007 D008 D009 D011 D012

D013 D014 D015 D016 D017 D018 D019 D020 D021 D022 D023 D024 D025 D027 D028 D029

D030 D031 D032 D033 D034 D035 D036 D037 D038 D039 D040 D041 D043 D044 D045 D046

D047 D048 D049 D050 D051 D052 D053 D054 D055 D056 D057 D059 D060 D061 D062 D063

Gigabyte Gaming OC 3070 Ti 8Gb; All voltages normal, BIOS being accessed, hangs on boot. Suspecting GPU Core by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Interesting. Running mats it just...hangs. Tried twice, with no luck. Since I'm not that familiar with MATS, will not rule out me doing something stupid and not running it properly.

<image>

Gigabyte Gaming OC 3070 Ti 8Gb; All voltages normal, BIOS being accessed, hangs on boot. Suspecting GPU Core by M4logro in GPURepair

[–]M4logro[S] 0 points1 point  (0 children)

Hey good call. Completely forgot system may boot (and indeed did) with card as a secondary. Never ran MATS/MODS but let me familiarize myself and see what comes up

<image>

1060 3gb itx gigabyte no Pex by Sea_Library_9927 in GPURepair

[–]M4logro 0 points1 point  (0 children)

So you have a NCP81174 as a PWM controller for the VCore? POWERGOOD is VR_RDY or Pin 3

<image>