Re: MSI GTX1070 not recognized on H110 Board, Z490 OK
Could be pcie capacitors. Not sure what else.
DrasticRepairs
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Last Activity: 02-06-2025, 01:20 PM
Joined: 05-04-2021
Location: Sinclairville, NY
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Re: Sapphire RX 480 - 8go no power - 0 volts à +VDDC - Help to find why
It's normal for vcore vddc to be 0 ohms. The only way to test that is with voltage injection. If it draws more than 5A at 0.8V, the core is probably shorted.
Don't worry about that, though.
If a MOSFET is bad, it shows up as a short on the 12V rails.
You'll want to check enable on the vddc controller. If you don't have EN, then trace that back to it's source. You can also check resistance and voltage on perst_buf. It should have 3.3V and nearly oL resistance.Leave a comment:
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Re: Software to analyze Video RAM faults on graphics cards?
You have to use easy bcd and delete the current windows 10 entry from the first partition, then reassign it.Leave a comment:
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Re: GTX1060 not working, Vcore down to 0.3V
If the xtal is good, it would have to be something with refin on the up9511. So check voltage on refin when the core drops. If that's the same as vcore, you can eliminate any power source as the problem. Then check the pwm on vid, and the voltage on vref, and refadj. Also check all resistors between refadj, Vref, and refin.Leave a comment:
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Re: GTX1060 not working, Vcore down to 0.3V
It's probably the crystal oscillator. Check for 0.9V and a sine wave from both sides of the crystal.Leave a comment:
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Re: Seeking Help with ASUS Strix 1070 CG411P5 - This is an odd one.
Have you checked pexrst yet?Leave a comment:
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Re: RX470 - memory upgrade 4GB -> 8GB ?
The 1.35v vs 1.5v difference doesn't seem to matter. I've tried mixing the hynix 1.35 and 1.5v versions.
I'm guessing the memory does have a bad chip, but it's not bad enough to show up on your Lord of the gpu. It's actually called tserver. You can get it to run the test with a higher memory clock by navigating to the folder that tserver runs from and running
./agt -mem=1000
Then
./tserver -boardtest=memfa
You can set the memory frequency to whatever you want. It doesn't have to be 1000....Leave a comment:
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Re: Palit GTX 1050Ti short mosfet value 4C029 RFMOP
Actually, that's not quite what I was saying. The rail that has the bad MOSFET is for the VRAM. The core will always fail short, and it's normal for a good gpu to be around 0.1ohms. So the only way to test for a core short is with voltage injection. In this case it's the memory that would be shorted. However, the memory controller in the gpu runs on the same voltage rail as the memory itself and is very sensitive to overvoltage. So 99% of the time, when the memory regulator shorts, the gpu is killed.
The...Leave a comment:
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Re: Palit GTX 1050Ti short mosfet value 4C029 RFMOP
What's the resistance from the coil next to it to ground? If it's less than 20 ohms, the core is dead. Usually when the memory VRM shorts on nvidia GPUs, it kills all of the VRAM and the core.Leave a comment:
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Re: GTX1080Ti founders edition diagnosis
Oof. 1.8V should be between 600 ohms and 900 ohms. And that's being generous. I'm pretty sure it's a dead core, but you can check pin a11 pexrst on the pcie connector. That's on the back right next to the notch. Track it as far as you can. It might go to an AND gate, or a resistor, then to the core. Also check resistance on it.
I think you're out of luck though. A low resistance on 1v8 is never a good sign.Leave a comment:
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Re: XFX Radeon RX480 with artifacting
There really isn't a way to tell which chip it is. Most people say to change both. And yes. That would be D0 or D1. You could replace one, then the other if the first doesn't fix it. Tserver is useful, but it still just narrows it down to 2 chips.Leave a comment:
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Re: RX470 - memory upgrade 4GB -> 8GB ?
The bios is the only thing that needs to be changed for a RAM upgrade. Was the card working properly before the upgrade? Have you tried running tserver on it? Maybe one of the modules has a bad solder joint. Does gpu-z say it's micron, or is it detecting as Samsung? You could try a micron only bios.Leave a comment:
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Re: MSI GTX1070 AERO ITX v330 ver.7.1 - Picture needed
I added the 1070 aero PCB to the files in the proper thread.
Leave a comment:
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Re: Graphics card Schematics and Boardviews
Here's what appears to be identical to the reference 2080 Ti PCB.
Schematics and boardview....Leave a comment:
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Re: Graphics card Schematics and Boardviews
MSI Aero gtx 1070 bordview. MS_V330_71.cad...Leave a comment:
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Re: Who is good with graphics cards repair, Asus gtx580.
It's called t-server.Leave a comment:
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Re: XFX RX 580 8GB GTR Black Edition 8gb OC+ - no display
Have you checked resistance of 3.3V and perstb (pcie pin A11)?
Edit: Also try all display outputs and see if it shows up in device manager as a secondary card. Sometimes bad VRAM will only let the card display from one output.Last edited by DrasticRepairs; 12-26-2021, 01:08 PM.Leave a comment:
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Re: Gigabyte GTX1080 Xtreme Gaming All Rails OK, no post
Glad to hear that was all it was! Usually it's just a last ditch effort to check that. It's not all that common on the 10 series. The 20 series and AMD RX 400/500 have an AND gate that goes bad all the time, though.
and yeah. I was wrong about it being B11. It's A11. I got my sides mixed up. "A" is the back and "B" is the front. Seems kinda backwards....Leave a comment:
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Re: Gigabyte GTX1080 Xtreme Gaming All Rails OK, no post
The GTX 1050 uses gddr5, which takes 1.5V. The GTX 1080 uses gddr5X, which takes 1.35V....Leave a comment:
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Re: Any hope for a dead RTX4000 GPU?
Okay, cool.
First, you want to pull that burnt chip off. You can test the card without it. Next, you want to measure resistance on the 12V inputs. So the 6/8 pin connectors and the 3 far left pins on the pcie fingers.
That will tell us which rail the shorted MOSFET is on and verify that one really is shorted.
A picture of the whole front of the PCB would be helpful.
Once you have confirmed that there really is a short, you can look for the VCORE and VMEM, power stages, DRMOS, or MOSFETs,...Leave a comment:
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