Zotac GTX 1060 6gb

Seller Note “PLEASE NOTE: THE CARD IS STRICTLY FOR PARTS ONLY AS THE FANS SPIN BUT NO DISPLAY. DON’T KNOW THE HISTORY OF THE CARD, BOUGHT IT IN A JOBLOT.”

Summary

  • The resistances and voltages seem ok.
  • Power up test exhibits symptoms in keeping with a failed memory chip “Blank screen, back light comes on after a few minutes.”
  • Mats test indeed indicates a failing chip or partially failing chip.

Mats Report

=== MEMORY ERRORS BY SUBPARTITION ===
SUBPART READ ERRORS WRITE ERRORS UNKNOWN ERRS

FBIOA0 0 0 0
FBIOA1 0 0 0
FBIOB0 0 0 0
FBIOB1 0 11112 0
FBIOC0 0 0 0
FBIOC1 0 0 0

Failing Bits:
B032 B033 B034 B035 B036 B037 B038 B039

Faulty chip shown here:

Zotac 1060 6Gb

This memory chip is K4G80325FB-HC25

Update 20/12/2021 – Reflow improvements and new issues!

After reflowing the faulty to chip, I had thought that I had grabbed an unlikely victory, as the card not only had a picture, but it seemed clear and the drivers loaded. However, after running Furmark for a few minutes, my joy was short lived as the the display broken up and it crashed! Now, after reboot it still get’s into windows (an improvement), but there are mild artefacts and it has gone code 43 in device manager. I will retest with Mats to see it there has been any change. hopefully the faulty Vram isn’t hiding aworse problem like a faulty memory controller.

Update (Later that day) – Seemingly Code 43 gone, also runs fine in Kombuster with detuned gpu, mem and increased fan!

This has been an interesting development, it could be I tested too soon after the reflow, but the code 43 and mild artefacting seems to have gone and windows loads drivers. Also the card passes Mats memory testing. Not only that, but if cpu and mem are underclocked and the fan increased to 70%, stress testing in afterburner seems stable or at least can be. The thermals seem bad to me if the, with quick ramp up. This may well corelate with likely memory and possibly also gpu instability underload. Likely that reflowed memory chip ‘may appear to work’, but cannot take stress. Possibly there is also a secondary issue, like with the gpu as it heats up. As things stand the card seems fine for desktop usage, which is at least intersting in that it allows further testing.

Next Steps

  • Recheck resistances, expecially memory.
  • Consider replacing the reflowed memory chip (possibly there are also other faulty chips)
  • Consider reflow of GPU.