Club3D HD7950 (aka R9 280) 3GB strange issue

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  • Dan81
    SNES-powered
    • Oct 2013
    • 1865
    • Romania

    #1

    Club3D HD7950 (aka R9 280) 3GB strange issue

    As the title says, I bought a HD7950/R9 280 (they're the same card) for cheap ($16) and it exhibits a strange issue:

    Plugging the card in ANY computer (I tried it with two good PSUs that had 2x6pin 12v connectors and it does POST) will yield no signal over HDMI or DVI. However, the card does POST fine as I can hear the BIOS beep once (which means everything's okay) on my GA-EP45T-DS3R, but neither HDMI nor DVI ports will output anything.

    The only difference I noticed over the two is that using a Samsung P2270HD LCD, the messages between HDMI and PC (which is VGA because I am using a DVI-I to VGA adapter) differ - I get "No Signal" on HDMI, while VGA will say "Check cable connection". If I unplug the HDMI, I get the same message as the VGA connection, so it looks like the card DOES send out something to the LCD.

    I even tried it on a UEFI based motherboard (ASUS H61M-A) without any luck, the same happens. (evidenced by the onboard HDMI/VGA/DVI-D combo being disabled altogether)

    What should I do? I tried various LCD monitors to no avail.

    Should I try a second reflow? The card does show signs of being reflowed once, though I fear that might make the card not POST anymore.
    Main rig:
    Gigabyte B75M-D3H
    Core i5-3470 3.60GHz
    Gigabyte Geforce GTX650 1GB GDDR5
    16GB DDR3-1600
    Samsung SH-224AB DVD-RW
    FSP Bluestorm II 500W (recapped)
    120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
    Delux MG760 case
  • piernov
    Super Moderator
    • Jan 2016
    • 4435
    • France

    #2
    Re: Club3D HD7950 (aka R9 280) 3GB strange issue

    Dead GPU.
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment

    • Dan81
      SNES-powered
      • Oct 2013
      • 1865
      • Romania

      #3
      Re: Club3D HD7950 (aka R9 280) 3GB strange issue

      Originally posted by piernov
      Dead GPU.
      Then how come it still POSTs and gets recognized by Windows just fine?
      Main rig:
      Gigabyte B75M-D3H
      Core i5-3470 3.60GHz
      Gigabyte Geforce GTX650 1GB GDDR5
      16GB DDR3-1600
      Samsung SH-224AB DVD-RW
      FSP Bluestorm II 500W (recapped)
      120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
      Delux MG760 case

      Comment

      • Uranium-235
        Comrade Glimmer
        • Aug 2007
        • 5042
        • US

        #4
        Re: Club3D HD7950 (aka R9 280) 3GB strange issue

        different part of the silicon is damaged likely. the PCI-E lanes for processing and motherboard communication are fine, but the other side for video output are damaged. Yes, they could be unballed. I'm not sure how the R9 handles output, if it's direct from the GPU or there is another chip handling switching monitor outputs. Could be different per card really
        Cap Datasheet Depot: http://www.paullinebarger.net/DS/
        ^If you have datasheets not listed PM me

        Comment

        • Dan81
          SNES-powered
          • Oct 2013
          • 1865
          • Romania

          #5
          Re: Club3D HD7950 (aka R9 280) 3GB strange issue

          Have reflowed it just today with new flux, still same thing.

          Maybe miniDP works? It's the only thing I haven't tested due to no adapter.
          Main rig:
          Gigabyte B75M-D3H
          Core i5-3470 3.60GHz
          Gigabyte Geforce GTX650 1GB GDDR5
          16GB DDR3-1600
          Samsung SH-224AB DVD-RW
          FSP Bluestorm II 500W (recapped)
          120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
          Delux MG760 case

          Comment

          • momaka
            master hoarder
            • May 2008
            • 12168
            • Bulgaria

            #6
            Re: Club3D HD7950 (aka R9 280) 3GB strange issue

            It's dead [GPU chip], Jim.

            I have numerous cards that do the same thing: PC POSTs and some of the cards even wake up the monitor on analog and digital output, but display nothing.

            The HD7k and R9 cards are very failure-prone.

            Reflowing it with flux is pointless, because it's not the BGA that fails on these cards. It's the GPU die to GPU substrate connections/BGA. Just re-heating it to normal reflow temperature will accomplish the same task (and often that means accomplish nothing.) So don't waste your flux.

            I have a dying R9 290 that also needs a reflow (works OK in Windows without drivers, errors out as soon as drivers are installed), but I'm not very hopeful it will work. Most likely will just pull its fancy heatsink to install on another video card.
            Last edited by momaka; 10-14-2019, 07:34 AM.

            Comment

            • Dan81
              SNES-powered
              • Oct 2013
              • 1865
              • Romania

              #7
              Re: Club3D HD7950 (aka R9 280) 3GB strange issue

              Originally posted by momaka
              It's dead [GPU chip], Jim.

              I have numerous cards that do the same thing: PC POSTs and some of the cards even wake up the monitor on analog and digital output, but display nothing.

              The HD7k and R9 cards are very failure-prone.

              Reflowing it with flux is pointless, because it's not the BGA that fails on these cards. It's the GPU die to GPU substrate connections/BGA. Just re-heating it to normal reflow temperature will accomplish the same task (and often that means accomplish nothing.) So don't waste your flux.

              I have a dying R9 290 that also needs a reflow (works OK in Windows without drivers, errors out as soon as drivers are installed), but I'm not very hopeful it will work. Most likely will just pull its fancy heatsink to install on another video card.
              Well, as a last resort, I might blast it with 550*C for more than 3 minutes (all caps are polys) and see if anything happens.

              Thing is, on my card, Windows does install drivers just fine.
              Main rig:
              Gigabyte B75M-D3H
              Core i5-3470 3.60GHz
              Gigabyte Geforce GTX650 1GB GDDR5
              16GB DDR3-1600
              Samsung SH-224AB DVD-RW
              FSP Bluestorm II 500W (recapped)
              120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
              Delux MG760 case

              Comment

              • momaka
                master hoarder
                • May 2008
                • 12168
                • Bulgaria

                #8
                Re: Club3D HD7950 (aka R9 280) 3GB strange issue

                Originally posted by Dan81
                Thing is, on my card, Windows does install drivers just fine.
                Is that with another card as the boot/main card?

                If not, and you're using the 7950 as the main card, and it boots and installs drivers OK without crashing, then try it on another PC to see if you get the same results. Also make sure you're using the "latest" drivers from ATI and maybe even try an older more "legacy" driver, just in case.

                Originally posted by Dan81
                Well, as a last resort, I might blast it with 550*C for more than 3 minutes (all caps are polys) and see if anything happens.
                Well, really do save that as a last resort.

                I just blasted a stubborn HD5750 that continued to artifact in a weird fashion, even after the first reflow. So the second time I upped the heat too much and popcorned the GPU chip. Result: GPU V_core, RAM Vdd, and GPU Vtt all shorted to ground. I didn't even bother to try powering it on, as I'm sure at best it won't work (and at worst, the GPU VRMs will obliterate themselves and fumigate my room with magic smoke - no thanks!) In fact, there was even a small ball of solder ball that had splatted from under the GPU chip die. Ooops! I really gave it too much heat, as I didn't want to see it artifacting a third time. Either it was going to be "showtime" or the morgue for this card... and unfortunately it was the latter. :\ Kind of a shame, as it would have been a good low-mid-range card for my needs with fairly low power consumption (only 86 Watts TDP, vs 105 for the HD5770.)
                Last edited by momaka; 10-21-2019, 07:19 PM.

                Comment

                • piernov
                  Super Moderator
                  • Jan 2016
                  • 4435
                  • France

                  #9
                  Re: Club3D HD7950 (aka R9 280) 3GB strange issue

                  Hot air: 200°C max on the die, 2min
                  Oven: 200°C max, 8min, aluminum foil all around the card except GPU
                  Not a fix, dead is dead.
                  OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                  Comment

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