Graphics Card Repair

Graphics card repair. This area is just to collect my thoughts and for the personal development of my electronics skills. If you find any of it useful, please comment, thanks!

Diagnostics (new and in test)

To Test:

  • EVGA GTX 780 TI (no shorts, resiistances looked ok, blank screen, need to test further and investigate voltage rails)

Further Analysis Needed:

  • XFX RX 580 8GB (listed as Card has been working fine but now white stripes on the screen but still works fine – looks like vertical bar artefacts, so hope to fix the memory chips responsible – actually has a blank screen, but is detected)
  • Nividia Tesla C2050 3GB (listed as ‘used, tested, working’ – won it pretty cheap, unusual card. Hoping a) works b) I can actually test it properly c) intersting buy – gets to windows, need to manually install drivers and test)
  • MSI GTX 1070 (listed as ‘I’m not sure if Ti version or not.  Sticker has been removed. I got it as untested but found that it didn’t work.  Cosmetically looks fine but will  likely need professional repair’ – was relatively cheap, hoping a) it’s easily fixable b) the ti version! – resistances ok, has main volatge rails, not detected, need to analyse further)
  • GIGABYTE GTX 1050TI 4GB GDDR5 (Card A – code 43 – reflow of vram didn’t change anything, suspect chip replacement may be required)
  • GIGABYTE GTX 1050TI 4GB Card B (Stated as Card does not post and displays no output – All voltages appear good, display port activates after some seconds and backlight, would suspect memory issue, would like to confirm the BIOS is also OK)
  • MSI 710 2Gb – Card A (Seemingly OK, Furmark/Heaven/Roblox, but crashes when starting Kombuster, so must in fact have an underlying issue)

Stress Testing Required (Basically working, need to prove OK)

  • Gigabyte R9 280X Windforce 3X OC (stated as bricked due to BIOS flash – seems to work fine in stress testing, new paste and further testing)
  • ASUS GT 710 2GB GDDR5 SILENT (Initially artefacted, but then ran fine, more testing required – possible bios read issue?)
  • KFA2 GTX 560ti (needs a good clean, glue for chipped bit of case, but otherwise seems to be working, need a mini HDMI to test port)
  • MSI 710 2Gb – Card C (Seems fine, no problems observed)

To Repair (issue detected and fix required)

Easy Fix Required (e.g. fan replacement)

  • Asus R9 280x (1 fan not working, reported minor artefact uncertain whether working fine, saw one crash the first time drivers loaded, passes benchmarks – need to replace fan before more serious stress testing)

Soldering Required (Port Issue e.g. HDMI, DVI) / Fan Header)

  • Palit GT730 2Gb (DVI port replacement / resolder needed)
  • EVGA 2GB GEF GTX 750 TI GDDR5 (nice to replace fan header then hopefully perfect and sellable)
  • Gigabyte HD 7770 GDDR5 1GB (boxed, listed as crash on driver load, seems to work fine under stress – needs new fan header installed)
  • XFX HD7850 (FX-785A-ZDF4) (drivers don’t load, previously had patterned artefacts – reflow fixed artefacts – ideally needs HDMI replaced)
  • MSI 710 1Gb – Card B (Bad corrosion, not safe to test without careful cleaning, probably spare parts at best – update, missing a couple of capaitors behind the GPU, but seems to actually work! Needs more cleaning, back plate replaced and probably transfer the capacitors from the Card D which I suspect has a faulty GPU)

BIOS Check / Flash Needed

  • PALIT GEF GT 710 2GB SILENT DDR3 (resistances OK, voltages OK, seems to work correctly, although wise to test further)
  • ASUS GT 710 2GB SILENT DDR3 710-2-SL (resistances OK, voltages OK, got to windows on first run, now wont – blank screen – when GT 710 driver setup previously by another card, this card then seems to reach windows and work without artefacts)
  • RX 470 4Gb (hasn’t crashed, but gets hot, need to try patching BIOS to improve fan profile and thermals)
  • GTX 750ti 2GB FAKE (heavy artefacting, possible BIOS mismatch, could be hard to find correct BIOS / unusual GPU / Memory combination)

Power Issue: (missing rail or short)

  • Windforce R9 290X (listed as faulty, hoping to use this to help restore Gigabyte Windforce R9 290X GV-R929XOC-4GD – Missing or very low vcore, otherwsie seems in much better conidtion than my other R9 290x)
  • PNY GTX 970 (listed as stuck at 135Ghz , this could be a power management issue)
  • MSI GTX 1080 8gb Founders edition (not arrived yet – not sure if the card is the same as in the pictures, listed as ‘Boots up works amazingly, when going into a game or benchmarking it only runs 16FPS! Have tried repasting the graphics chip even though it doesn’t go above 45 degrees!! For normal day to day use like surfing Internet etc, perfect, give it a game like gta, call of duty it will lag and only play at 16FPS. Don’t know if this is firmware or hardware problem, the card is clean and to be fair hasn’t had alot of use.’ – I am hoping a) this card is as per the pictures b) has a power management chip issue e.g. throttling – very happy! a) it’s a 1080ti sold as a 1080 b) it behaves as described)
  • ASUS ROG Strix RX 580 8gGB (Has a damaged ITE 8915FN-56, hopefully this is all and can be replaced, nice looking card)
  • SAPPHIRE RADEON R7 265 DUAL-X (stated as no power – has no power because ther is a short on the 12v connector)
  • Zotac 1080ti (missing power rails, vcore, vmem, found 1.8v)
  • XFX Radeon 7950 3Gb (doesn’t post, need to check voltages)
  • Gigabyte RX 460 2Gb (no power to card, fuse issue & likely vrm short)
  • GTX 760 Ti / 2GB GDDR5 Alienware OEM (Rare card, 12v PCI BUS short detected, after testing with a PSU, sadly think the 12v might have passed through the GPU, as it is getting hot and the test voltage can be seen on vcore)
  • ASUS GT 710 2GB GDDR5 (K7C0YZ04R493ZUA) (very similar, but slightly different to other one) (Interesting, missing VMem & VCore, can hopefully use the other semi working 710 to compare some voltages)
  • GIGABYTE WINDFORCE GV-N7800C-3GD (missing vcore & vmem power rails)
  • Dataland R9 370 2Gb (missing vcore & vmem)

BGA / Memory Chip Replacement Needed:

  • MSI GTX 1050 2Gb (faulty vram chip)
  • Windforce GV-N770oC-2GD (stated simply as not working – has 1 failing memory chip)
  • EVGA GTX 770 2Gb (reported as coloured shapes across screen – didn’t see this, loads Windows 10, no artefacts seen, but code 43 – bios seems ok, guess memory issue)
  • Zotac GTX 1060 6gb (one failing vram chip – reflow restored partial functionality, crashes under load – need to try replacing the memory chip now)
  • PNY GEFORCE GTX 550Ti GDDR5 1GB (Blank screen on driver load, works in BIOS)
  • XFX HD 6950 2GB (stated as drivers load no output – this appears accurate, there is no picture, but as a second card it appears to be detected, but I think it actually crashes when it tries to use it’s drivers at all – guessing some kind of memory or gpu issue – perhaps worth trying a reflow of vram)
  • MSI 710 1Gb – Card D (Vcore resistance too low/shorted, since 12v isn’t shorted, probably GPU short, needs further tests – voltages OK, but lots of heat behind GPU and no picture, reckon GPU has got a short – possible GPU replacement test candidate or scrap?)

Semi Working / Crash Under Load

  • Sapphire Nitro R9 390 8Gb OC (works 5 – 10 mins then crashes to blank screen, possibly when hot)
  • EVGA GTX 570 2.5Gb (Was very, very dusty when I got it, basically works under light load, will crash soon after heavy load e.g. Furmark crashes, Roblox OK – Would suspect either vram or gpu is faulty or faulty solder joint caused by overheating)

PCB Damage / Components Missing

Back Burner:

Working / Prep for sale

  • Fake 730 4Gb (BIOS replacement, shows as Fake, but works now)
  • GTS 260 (needs a clean & good test)
  • 5 x Quadro K2000D 2Gb GDDR5 (need to complete testing of all ports)
  • Sapphire HD 7870 2Gb (11200-14-20G) (Picture in BIOS, crashes when Windows tries to load driver – memory test required – reflow of 4/8 memory chips fixed crash, so memory was to blame – thermals not wonderful, but functional)
  • Quadro K5000 (seemingly working fine – for sale)
  • Sapphire HD 7850 2Gb (Originally had 2 vertical artifact bars in BIOS screen, reflow seemed to fix faulty Vram chip – ready to sell)

Sold

Scrap boards

  • NVIDIA 745 OEM (likely GPU replacement needed – cannot get replacement GPU, out of stock)