PowerColor RX 590 Card A

Seller Note “Dead”


  • I bought this card mainly in the hope of using my working one to help me fix it.
  • Good condition, warranty sticker on.
  • Resistances
    • VCore – 0.9
    • VMem – 32.6
    • VDCI – 27.9
    • Display Rail – 25.8
    • 1.8V – 3.9K
    • 5V – K++ high
    • 3.3V – 2.6K
    • 12V – K+ high
  • All voltages present, hot core, but no display.
  • Card not detected.
  • No BIOS activity
  • PEX reset short – 2.2 Ohms
  • There is a shorted component, removal removed the PEX RST short

The first two pictures show the shorted component, I can’t identify it from it’s markings. I managed to find the same component on an MSI RX 590 donor board. Unfortunately, transferring it has not fixed the card.

Next Steps

  • I have a working PowerColor RX590, hopefully, I can measure the expected voltages on the test pads around the mystery component.
  • Possibly the replaced component is faulty or I messed up the soldering.
  • Quite possibly though, the core is faulty, as a short on PEX reset seems concerning even if it was the mystery component.