Repair Rx470 gpu artefacts - Page 1
Forum section: electronics / repair

author: more_stars
author_rank: Regular Contributor
timestamp: March 29, 2020, 07:58:51 pm
content: Hello guys,I have at hand two gpu s that ware used in mining. They are rx470 with 8gb from xfx. One is just fir parts ant the other one has some fat lines on the screen. I tried to reflow the main gpu but I have never done that and I was to afraid to heat up the gpu more then I supposed. After my attempt to reflow the gpu, nothing had changed so I tried using the gpu as it is.After installing it in the computer, I was able to see that in device manager, the card was listed as basic video adapter. I downloaded the drivers and successfully installed them but then, every time the windows boots, the gpu goes black.Is there any way I can fix this card, it may be the memory chips? As I seen that they are a bit toasty in the middle.

author: more_stars
author_rank: Regular Contributor
timestamp: March 31, 2020, 12:47:03 am
content: Also, is thare any way I can test those mem chips and, if one of them was broken, the card would even boot?

author: Haenk
author_rank: Super Contributor
timestamp: March 31, 2020, 09:10:26 am
content: Most miners do install a special firmware to overclock the card. You need to check that - bringing the card back to spec might even fix the memory problem.Otherwise a line on screen hints at a defective memory chip. Reflowing will most likelyonly do more damage and will not help.

author: more_stars
author_rank: Regular Contributor
timestamp: March 31, 2020, 09:37:04 am
content: Ohh I never thought of that. How do I even check for the firmware and if that is bad, it is hard to install the original one back?Also, I have another board which might have some good memory chips but is there any way to test those ans see which chip is bad?

author: LateLesley
author_rank: Frequent Contributor
timestamp: March 31, 2020, 11:06:25 am
content: You might find this article helpful.https://www.raymond.cc/blog/having-problems-with-video-card-stress-test-its-memory/

author: more_stars
author_rank: Regular Contributor
timestamp: March 31, 2020, 12:54:05 pm
content: I tried to check the memory chips with some of the programs that are able to do that but non of them recognizer my gpu. I was able to go with a normal rezolution and those 2 fat lines ware divided in foul lines as they scaled up with the rezolution change.I tried to update the bios but the ATIwinFlash tool gives me an error that no ati gpu ware detected.Is thare a way to install the original bios to this card?

author: Haenk
author_rank: Super Contributor
timestamp: March 31, 2020, 03:32:33 pm
content: Check withhttps://www.techpowerup.com/gpuz/what you actually got there…And a bunch of different BIOS files:https://www.techpowerup.com/vgabios/?architecture=Uploads&manufacturer=XFX&model=RX+470&version=&interface=&memType=&memSize=&since=- check the descriptions though (different memory types, different clock speeds). You might want to try a low core and Memory speed first.Flashing tool:https://www.techpowerup.com/download/ati-atiflash/

author: more_stars
author_rank: Regular Contributor
timestamp: March 31, 2020, 09:40:44 pm
content: I did checked with the gpuz utility but no luck, the name was also Microsoft basic vedeo.Also I did find 3 bios updates for this card but neither of them worked as the card was also listed as micrisoft basic adapter. I used the free dos utility to instal the bios.I will attach a photo if the screen after I scaled up the rezolution.