Hey if board repair is within your capabilities, then go for it. Any card that's had abuse on this level (chunks missing) is likely to have other issues, and I wouldn't take it on unless bored or well-remunerated - and I've never been bored.
I'm just a bit surprised that someone experienced in repairing multi-layer circuit boards is unable to find commonly-available service data . . . and fires the parts cannon without determining the card's problem first. Personally, I prefer a more systematic and measured approach.
Thanks for the offer of pictures, but I have no emotional...
Joe24
Member
Last Activity: 12-07-2023, 06:51 PM
Joined: 06-15-2021
Location: Flat.
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Last edited by Joe24; 12-07-2023, 06:50 PM. -
@TrailandError:
Appears to be the same or very similar board as MSI MS-V371. According to V371 boardview, which can probably be found somewhere in this thread, component is #C4382 (pin 1 = USBC_VBUS, pin 2 = GND), 0.1µF capacitor, 0402 size. Pin 1 is on the right in your picture, pin 2 is on the left.
I doubt replacing this cap is going to solve anything though, unless the USB-C port was causing you trouble. Should function without it, although maybe a bit unstable.
I'm looking at that chunk missing out of the board right next to your component of interest,...Last edited by Joe24; 12-06-2023, 06:31 PM. -
Re: 2070 Super with crazy power consumption numbers
Turned out to be a firmware issue. Evidently this is an early version of the board v1.0C, and it requires an obscure firmware version to make it work which is not one of the "official" firmware versions. This resulted in the GPU mis-parsing the string of voltage/power consumption measurements from the 45491. All good now.
P.S., With the proper firmware, the bottom DP jack came to life too. It was dead but I hadn't got around to looking at it yet.Last edited by Joe24; 02-15-2023, 11:45 PM.Leave a comment:
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Re: 2070 Super with crazy power consumption numbers
GPU power reading is exceeding board power reading. And memory should not be 3W. Common sense fail....Leave a comment:
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2070 Super with crazy power consumption numbers
Have a Gigabyte 2070 Super with some bonkers power draw readings. Card runs fine, other than some GPU throttling because of the power numbers. But GPU power always reads too high, more than the power reading for the entire card. And VRAM power always reads way too low, along with PCIe and 6-pin power readings. The 8-pin reading seems plausible.
Typical readout while running 720p Furmark, 8x AA:
GPU clock: 1590 MHz
Mem clock: 1750 MHz
GPU temp: 58.8 °C
Hot spot: 71.8 °C
Fan speed: 33% / 1000 rpm
Mem used: 454 MB
GPU load: 97%
...Last edited by Joe24; 02-03-2023, 02:20 AM. -
Re: Graphics card Schematics and Boardviews
Same question here. Anyone have schematic and/or boardview for Gigabyte RTX 2070 Super Gaming OC 3X GV-N207SGAMINGOC-8GD? I have for 2070 and 2080, but both of them have USB-C, while the 2070 Super has an extra DP port instead . . . and guess which port on this card needs some reconstructive surgery! There are also some other minor differences. I could probably figure it out by comparing the other DP ports, but much faster to use actual factory data.
EDIT: Found it. This boardview for GV-N207SWF3OC-8GD appears...Last edited by Joe24; 02-02-2023, 12:14 AM.Leave a comment:
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Re: Genius Ultramatic R2-T3 remote,Need help identifying component
Now I've got a bunch of reading to do! Thanks for pointing me in the right direction. I hate not knowing how things work. Where's bigclive to do a complete circuit analysis when you need 'im, lol.
Yes, the red LED threw me at first too. You would expect it to come on when you press buttons, right? Wrong, it only comes on when the battery is low. It's just connected to a divider net and a Darlington array (circled in blue on the board pic above; bottom SOT is a diode, top 3 are NPN BJTs).
...Last edited by Joe24; 07-13-2022, 10:55 PM.Leave a comment:
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Genius Ultramatic R2-T3 remote,Need help identifying component
This is out of a wireless (RF) remote for one of those power lift beds for seniors. Remote says "The Genius Ultramatic" on it, and is model #R2-T3 (03-680252-03), FCC ID: MG8-R2-T. Standard Motorola MC145026P encoder, which is functioning.
I'm told the unit doesn't work. I don't have the bed that goes with it, so maybe it's the remote that's the problem, and maybe it isn't . . .
Haven't actually found anything that's NOT working in it yet. Don't have a receiver, so can't verify that it's actually transmitting anything. However, when I hold the device near unshielded...
Last edited by Joe24; 07-13-2022, 01:50 PM. -
Re: BGA reballing techniques and equipment
@somes2121: You mean for reballing, or for installing the GPU? Don't think there really is a "proper" profile that matters for reballing. You're just heating things up until the solder balls melt into place, and no more. Don't use higher temperatures than you need, or for longer than you need to.
As far as installation goes, that's a bit more involved if you want a reliable result. Nvidia's/AMD's factory spec will be locked in a dark vault somewhere. Doesn't matter, the idea is the same for all reflow soldering....Last edited by Joe24; 04-01-2022, 01:27 AM.Leave a comment:
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Re: BGA reballing techniques and equipment
That's the DIRECT-heating method, different stencils than what's shown in the pictures above. The stencils shown are the INDIRECT type, and are not designed to have heat applied to them at all.
How do you think the chip gets installed on the board after reballing??? By "heating the entire chip & it's core from top & bottom," that's how. Don't worry yourself about heating the GPU when reballing, perfectly acceptable. Any BGA chip is tough enough to take normal soldering temperature...Last edited by Joe24; 03-23-2022, 05:59 PM.Leave a comment:
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Re: BGA reballing techniques and equipment
This is a really good tip for direct-heat stencils. I usually like to do about 5 balls on each opposite corner though. If there was only one ball on each corner, you're at high risk of ripping a pad off the chip if you bump the stencil.
Clean Q-tip works good too. If you get any flux on the fibers and solder balls start sticking to the Q-tip, chuck it and get a fresh one....Last edited by Joe24; 03-19-2022, 02:20 PM.Leave a comment:
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Re: BGA reballing techniques and equipment
Yes, but as I said, in my experience doing anything BIGGER than small GPUs like GP106/GP104 (37mm x 37mm) is an issue with direct heat stencils. I've done TU104 with direct heat stencils before, but it was dicey.
Nobody has trouble with warping when reballing a little GDDR6 etc. memory chip, because they're tiny. But the bigger the stencil, the more warpage you inevitably have. And I have some bigger TU102 GPUs to do (2080 Ti, which are 48mm x 48mm). Which is why I'm trying to get indirect stencils figured out,...Last edited by Joe24; 03-19-2022, 02:22 PM.Leave a comment:
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Re: BGA reballing techniques and equipment
Tried using the indirect stencil on GP106 followed by heating in my bench oven. Still using Amtech 559. Better results than with hot air, but still needed to fix 30-50 balls (including the ones I had to remove and replace in order to clear the bridges; I take a needle nose tweezers and squeegee the bridge towards the nearest open area in the grid, which can nuke another half dozen balls if they're in the road).
You can see after stenciling where the solder balls are starting to wander around already. I baked the chip and jig...Leave a comment:
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Re: BGA reballing techniques and equipment
Adding missing solder balls is easy. It's not so easy to clean up merged solder balls without nuking the rest.Leave a comment:
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Re: BGA reballing techniques and equipment
GTX 1070 is the exact same BGA footprint as the one I'm currently working with. In my experience, this is pretty much the size limit of what direct heating stencils will do. Any direct heating stencils larger than this seem to warp no matter what you do or who you buy them from. Laws of physics at work: heating sheet metal causes it to warp. Ask anybody who welds. Which is why I'm trying to get indirect heating stencils to work instead, because I have a couple TU102 chips to transplant, and am not optimistic about direct heat stencils for...Leave a comment:
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Re: BGA reballing techniques and equipment
Oh I agree with you there, they really shouldn't move. Anyhoo, what type of hotplate do you mean? One of those smooth-top ones they use for removing phone screens, or the ceramic circuit board preheater style? I might give it a go in my bench oven (former toaster oven). If you're talking about the smooth-top heaters, I don't see that working on a GPU, because the die is considerably smaller than the BGA base. Especially a GP106.Last edited by Joe24; 03-10-2022, 07:42 PM.Leave a comment:
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Re: BGA reballing techniques and equipment
Hot air soldering gun at minimum fan, with the snout removed for minimum air velocity, and a decent distance away (4"). Some balls are running together before I even start heating, so that's at best only part of the problem.Leave a comment:
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Re: BGA reballing techniques and equipment
The problem is that the solder balls run together after I remove the stencil, and even more so when I begin applying heat and the flux warms up and gets thinner. Probably 100-200 solder balls to replace manually every time, which is getting close to 10%.Last edited by Joe24; 03-10-2022, 06:54 PM.Leave a comment:
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Re: BGA reballing techniques and equipment
Was using direct heating stencils. Now trying a reballing jig that takes 90mm stencils. The kind you mentioned, with the removable top and a slide vise that holds the chip. Direct heating stencils are okay for small stuff, but once you get up to the bigger GPUs, stencil warping becomes a huge issue. Also changed to Amtech flux, which is what the internet says I should do.Last edited by Joe24; 03-10-2022, 06:45 PM.Leave a comment:
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Re: BGA reballing techniques and equipment
This is 0.45mm solder balls on 0.7mm or so pitch. Specifically, an Nvidia GP106 GPU.Last edited by Joe24; 03-10-2022, 05:57 PM.Leave a comment:
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