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Graphics card repair? 1070ti Asus Strix no display output.

Jay85

Jay85

Jay85

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Anyone in here repair gpu's? Board level solder job possibly.

Long story short, a friend of a friend had a gpu that stopped working after it was shipped with it still plugged into the pc. This gpu a 1070ti Asus Strix card has been sat in a box since then for 2 years and is now in my hands. I've had a look at it externally and pcb wise it looks fine, as the first thought if it was shipped with it plugged into the pc, it would probably have damaged pcie lanes. Pcie lanes are fine, no damage and the board itself looks fine, no cracks. Cannot tell if its maybe missing a cap or resistor though.

First point of call is to plug it in and see what happens but from what my friend has said, there is no display output. I don't know if the fans spin yet so will check that out tonight.

Ignore, cap isn't missing afterall. I looked at the wrong area.

 
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If it takes a minute to post with a screen which is backlight only then you most likely have a faulty memory.

If you have onboard graphics or a spare AMD GPU, boot windows with that and the 1070Ti plugged in and see if the card is detected in device manager with error code 43.

If the card was working before shipping and it doesn't after shipping, then it's likely because it's been bouncing about and it's ripped pads either under the memory module or under the core in an area the deals with memory.
 
Pulseammo said:
If it takes a minute to post with a screen which is backlight only then you most likely have a faulty memory.

If you have onboard graphics or a spare AMD GPU, boot windows with that and the 1070Ti plugged in and see if the card is detected in device manager with error code 43.

If the card was working before shipping and it doesn't after shipping, then it's likely because it's been bouncing about and it's ripped pads either under the memory module or under the core in an area the deals with memory.
Click to expand...

I have onboard but with the gpu plugged in and the cable connected to the onboard, i don't get a post. I might try and configure the bios to post from onboard only as i've not tried this yet. Will also need a working copy of windows on the system before i can test this out.

If its under the core, then probably totally dead? I mean to get underneath that to do any sort of repair isn't economically viable right? Plus the equipment needed to do it would be hard to come by im guessing?
 
Jay85 said:
I have onboard but with the gpu plugged in and the cable connected to the onboard, i don't get a post. I might try and configure the bios to post from onboard only as i've not tried this yet. Will also need a working copy of windows on the system before i can test this out.

If its under the core, then probably totally dead? I mean to get underneath that to do any sort of repair isn't economically viable right? Plus the equipment needed to do it would be hard to come by im guessing?
Click to expand...

You need to set onboard as primary and have the cable plugged into onboard. The system might still take a long time to post though I think.

If you have ripped pads under a single module then you need a hot air rework station, if the pads are ripped from the board you need to repair those and you likely need a microscope. The solder joints can also just be broken, or the pads ripped from the memory module side and then you can just put a new module on.

If you need to lift the core, it can be done, some folks use a BGA rework station, others will use a preheater and a hot air station on a mount. If the core needs lifted (and therefore reballed) though I think you're getting into the territory of uneconomical repair for that card. You also need to deal with any pads ripped off the board.

It's only a guess though. As you've seen from the guide that was linked there's a procedure that you'd follow before getting to this stage. Generally you take a resistance measurements of each rail on the GPU in the order that they appear, this rules out any short circuits and generally a wildly varying resistance from the norm can indicate a problem on that circuit.

Once you're happy with the resistances you apply power to the card, and take a voltage reading of each rail in order (but generally if you have vcore then everything else should be present).

If all voltages are present and the card detects then normally you use memory testing tools, and if the card doesn't detect then you look at stuff like bad BIOS and the crystal oscillator not providing the correct clock.
 
Pulseammo said:
You need to set onboard as primary and have the cable plugged into onboard. The system might still take a long time to post though I think.

If you have ripped pads under a single module then you need a hot air rework station, if the pads are ripped from the board you need to repair those and you likely need a microscope. The solder joints can also just be broken, or the pads ripped from the memory module side and then you can just put a new module on.

If you need to lift the core, it can be done, some folks use a BGA rework station, others will use a preheater and a hot air station on a mount. If the core needs lifted (and therefore reballed) though I think you're getting into the territory of uneconomical repair for that card. You also need to deal with any pads ripped off the board.

It's only a guess though. As you've seen from the guide that was linked there's a procedure that you'd follow before getting to this stage. Generally you take a resistance measurements of each rail on the GPU in the order that they appear, this rules out any short circuits and generally a wildly varying resistance from the norm can indicate a problem on that circuit.

Once you're happy with the resistances you apply power to the card, and take a voltage reading of each rail in order (but generally if you have vcore then everything else should be present).

If all voltages are present and the card detects then normally you use memory testing tools, and if the card doesn't detect then you look at stuff like bad BIOS and the crystal oscillator not providing the correct clock.
Click to expand...

Yeah that sounds like something thats way out of my league, i would definitely be looking at a techy to look into this. I have someone that might be able to take a look at this for me though he's not worked on gpu's that much, he does a lot of micro electronics and repairs so hopefully he can take a look at this and figure out if its repairable or not.

If you have any other recommendations for repairers please do let me know.

Hopefully we can bring some life back into this otherwise it will become a nice ornament on my wall :cry:
 
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Jay85 said:
Yeah that sounds like something thats way out of my league, i would definitely be looking at a techy to look into this. I have someone that might be able to take a look at this for me though he's not worked on gpu's that much, he does a lot of micro electronics and repairs so hopefully he can take a look at this and figure out if its repairable or not.

If you have any other recommendations for repairers please do let me know.

Hopefully we can bring some life back into this otherwise it will become a nice ornament on my wall :cry:
Click to expand...

It might sound daunting but at the moment you don't really have a diagnosis yet, it's really just a list of best to worst case scenario! If your friend can follow the steps on that guide you should get a better idea of what's wrong with it, good luck, hope you can get it fixed!
 
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