Hey
I got a short on 3 pins of the PCI-E gold connector for 12V.
I see a few caps near the top right (near main power connector) that look blown, one is showing a short across it to GND.
Unforunately I don't have a schematic or board view for it (EVGA GTX 1070 FTW 8GB).
Due to the large number of caps there, I think it may just be decoupling.
Any ideas on figuring out the cap values? There also isn't any reference numbers for the caps on the silkscreen.
whc14765
Member
Last Activity: 11-27-2022, 02:54 PM
Joined: 03-24-2022
Location: London
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1070 - Blown SMD caps, short on 12V PCI
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Re: Graphics card Schematics and Boardviews
Need schematic and board view for EVGA GTX 1070 FTW 8GB.
Some SMD caps are blown, can't figure out what values they are. -
What is 12V_PEX8_F?
I have PALIT Jetstream 980Ti 6GB missing a 5V rail, it seems that the 12V_PEX8_F (probe point) near the 5V buck converter is missing.
I have never heard of a 12V PEX rail, what is it??
Also, I thought that 5V is turned on first, then PEX??Leave a comment:
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Where is 5V,12V rail generated - PALIT 980Ti
I have a PALIT 980Ti 6GB givng me a black screen.
3.3V is present, 5V is not. Does anyone know where 5V is created?... -
980Ti - White screen crashing on heavy load
Hey,
I have a windforce 980ti that had a blown PCI connector fuse and also one of the DrMOS connected to the PCI I think for memory voltage rail was blown, so replaced that too.
Card runs fine on heaven light load. With heavy load, within 1s, i get a white screen and the pc crashes.
No other issues. No artifacts -
Re: GTX 970 GPU crashes when loading drivers?
Update:
Turns out that issue is only happening on HDMI. Card itself was running but HDMI would cut out. DVI is working fine. Very strangeLeave a comment:
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Re: GPU crashes when loading drivers?
UPDATE:
I managed to get it to boot into normal Windows, started up Heaven benchmark and it immediately went black screen.
Not sure if I messed up the soldering on that 1 phase or if its an actual VRAM issue.Leave a comment:
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GTX 970 GPU crashes when loading drivers?
Hey,
I got a MSI GeForce GTX 970 which had a 2.5ohm short on the PCIE 6pin. I replaced one of the VCORE MOSFETs and the short was gone.
The card boots up now. I got it booted into Windows, started downloading drivers (didn't install yet) and it just black screened - I assume Windows by that time had started loading its own GPU drivers onto mine.
After that, everytime the PC would start booting Windows, I would get a a black screen.
I went into Safe Mode (Worked fine) and installed the drivers. But I get the same issue went booting into... -
Replacement Fuse - 980TI Gigabyte
Hi,
I have a GIGABYTE Windforce 980TI with a blown fuse. I have already found the root cause for the fuse blowing.
I need help getting a replacement fuse - I'm fine with waiting some time for some cheap ones from China.
The fuse says 10A on it. And I'm not sure what package size it is exactly. Also, how do I know if it is a fast or slow fuse?
... -
Re: BEST BST-863 vs Atten 863D
Oh sorry, that is the one I meant....Leave a comment:
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BEST BST-863 vs Atten 863D
Hey,
I need a new hot air station. The Quick is quite expensive in my area and difficult to get.
At the moment, I have the option of a used Atten 863D 1000W for 100 pounds or a new BEST BST-863 1200W for the same price.
I saw SDG Electronics had a good review of the BEST. Louis recommended the ATTEN, not sure if he has seen the BEST. -
Re: Gigabyte 980TI Windforce - Blown PCIE Fuse
UPDATE:
Looks like that PCIE 12V x16 is supposed to go all the way to the other end of the board. I'm suspecting the driver/FET IC has shorted out and hence seeing the 16ohms. Maybe this is the 16 ohms for the memory or something?
Right next to the huge electrolytic caps
. Going to need to shield those really well.
...Leave a comment:
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Gigabyte 980TI Windforce - Blown PCIE Fuse
Hey,
I have a Gigabyte 980TI Windforce. No shorts on the main 8 pin PCIE power connectors. The 8 phase buck converter inductors are showing 2.5ohms.
The card doesn't power up at all - no lights, no fans, nothing. I noticed that all of the 8 phase inductors are showing 0V. I couldn't find a fuse for the 8pin power connectors.
I did notice that the PCIE x16 connector 12V line has a fuse F3 (10A marked on it) which is blown. It is reading 16ohms on one end.
1st Question: Is there some logic on the board that checks the 12V on the PCIE x16 bus connector...Last edited by whc14765; 04-08-2022, 06:35 PM. -
Re: DrMOS just won't desolder
Thanks for the detailed response. I have a feeling this DrMOS might be fused to the ground pad. It isn't showing a short but when I first opened the card, that DrMOS had 2 loose solder balls close to the edge of the IC. I assume it must have gotten extremely hot. But there's no shorts and coil Resistance is fine at 2.5ohms too....Leave a comment:
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Re: DrMOS just won't desolder
Is it worth getting a cheap preheater or instead spending the money on a better hot air station and use that hot air to "preheat" the board....Leave a comment:
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Re: DrMOS just won't desolder
Will preheating the board to 220C not desolder the components from the back when I start applying hot air to the front? Also, will the plastic connectors for PCIE 6pin/8pin be safe at 220C?
Sorry, I've never used a preheater before, might have to buy one now. I see these 1600W IR ones for around 120GBP, if you have any expereicne with them?...Leave a comment:
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Re: DrMOS just won't desolder
It's a QFN, the legs are flowing, it's the huge ground pad that is keeping it in place....Leave a comment:
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Re: Palit 980TI JetStream 6GB - keeps burning VRM(s) in 3d mode
Hey, I'm working on that card as well at the moment, I could help you with a few readings if needed.
A side note: how the heck did you get those DrMOS desoldered, are you preheating the board? My 480C hot air station (Yihua) just won't do it.Leave a comment:
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DrMOS just won't desolder
I've tried everything - my blower is at 480C on max speed (Yihua 995D) and this IC on the PALIT 980Ti just won't move.
Any ideas on how to get it off? I believe the ground plane is just sinking the heat too quick.
I've added loads of flux and I am trying to remove with tweezers whilst applying hot air directly on the DrMOS. -
Alternative to SM7320
Do I have to use the exact same MOSFETs and how do i decide on replacement?
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