ASUS GTX 1660 dont detect, missing voltages

[Traptor]

Hi Guys!

I would like to ask some help for my ASUS PH-GTX 1660 gpu.
As you can see on the picture I found only 12V and 5V voltages.

I have boardview and schematics but I don't understand why don't have more voltages.

Anybody can help me?

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages

OK, I finded one missing resistor: PR338 near of the PU3 chip.
I added one 0 ohm resistor and now I have more voltages.
VPEX is missing at the moment.

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages

I found more missing parts on VPEX line. After I put the resistors I got VPEX, but I dont get picture...
Linux lspci lists the GPU but nvflash give error message: "Adapter not accessible or supported EEPROM not found"
I can write this bios chip with ch341a + 1.8V adapter.

In bios pin 1 I measure 1.8V continuity. It seems the CS (chip select) command is not received.

Anybody has suggestion what can I do?

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages

I think chip select is OK, but I dont have oscilloscope and I tested it with this method: https://www.youtube.com/watch?v=0hWnkRl3t1Y

So the question is this: Why give nvflash the "Adapter not accessible or supported EEPROM not found" error?

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages

So this is a very exciting journey.

The reason of the error message "Adapter not accessible or supported EEPROM not found" was the wrong - old - version of nvflash...

GPU is working but after testing with mats/mods I saw 4 of 6 memory chip are bad.

I don't know at the moment the repairing is worth it or no.

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages

I made many test and I dont sure the memory problem...
If I try to booting windows without driver the GPU is working fine, but after the driver install I got black screen.

I measured the Vmem and Vcore voltages during the boot phase and in the driver initialization moment voltages are changes.
Vcore imncreasing from 0.77 V to 0.84 V and Vmem increasing from 1.38 V to 1.44 V. And after that I got black screen.

[Dr.Pc]

Re: ASUS GTX 1660 dont detect, missing voltages

Hallo mein Freund
Hast du DDR5x Speicher?
Normal müsstest du doch 1,5V auf Vmem haben.
Vcore von 0,77 zu 0,84 würde ich jetzt mal nicht als schlimm empfinden. Wenn die GPU mal auf last geht, bist du bestimmt mal auf 1,.... V.
Hast du das Bios überprüft?

Hello my friend
Do you have DDR5x memory?
Normally you should have 1.5V on Vmem.
I wouldn't consider Vcore from 0.77 to 0.84 to be bad. If the GPU goes under load, you are definitely at 1,.... V.
Did you check the bios?
.

[Dr.Pc]

Re: ASUS GTX 1660 dont detect, missing voltages

thx

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages

Hallo mein Freund
Hast du DDR5x Speicher?
Normal müsstest du doch 1,5V auf Vmem haben.
Vcore von 0,77 zu 0,84 würde ich jetzt mal nicht als schlimm empfinden. Wenn die GPU mal auf last geht, bist du bestimmt mal auf 1,.... V.
Hast du das Bios überprüft?

Hello my friend
Do you have DDR5x memory?
Normally you should have 1.5V on Vmem.
I wouldn't consider Vcore from 0.77 to 0.84 to be bad. If the GPU goes under load, you are definitely at 1,.... V.
Did you check the bios?
.

Hi,
this card has DDR6 memories not DDR5.
Yes I did check the bios.

[ktmmotocross]

Re: ASUS GTX 1660 dont detect, missing voltages

"booting windows without driver the GPU is working fine, but after the driver install I got black screen"

standard behavior with bad rams

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages

"booting windows without driver the GPU is working fine, but after the driver install I got black screen"

standard behavior with bad rams

Ok, but now I have shortage on 1V8_AON line...

[ronelex]

Hi Guys!

I would like to ask some help for my ASUS PH-GTX 1660 gpu.
As you can see on the picture I found only 12V and 5V voltages.

I have boardview and schematics but I don't understand why don't have more voltages.

Anybody can help me?

Hellow sir, can you share your boardview and schematic for this model? I got missing 1.8AON

[Traptor]

Hellow sir, can you share your boardview and schematic for this model? I got missing 1.8AON

Yes.

LINK to schematic & boardview https://www.badcaps.net/forum/troubl...atic-boardview

[SMDFlea]

Copied schematic to new thread.

[Traptor]

Re: ASUS GTX 1660 dont detect, missing voltages



Ok, but now I have shortage on 1V8_AON line...

Haha, the shortage is gone. The bios chip is wrong and its made the shortage.
After replace this chip the card is booting and give picture on DVI output.

According to mats/mods I have memory error on A1 bank, failing bits A034 and A050.
I reballed the memory but nothing changes there is error on A1 bank, failing bits A034 and A050.

I'll buy a new memory chip to see if that fixes it problem.

[Traptor]

Memory replaced but nothing changed...
mats/mods still finds a memory error on bank A1, bits A034 and A050 failing.