Question Sapphire Pulse RX5700XT - won't let MB Post

[Anton Hunter]

My RX5700XT (water-cooled) had worked fine...with -20C temps since water-blocked). Turned it on as usual and the system would not post...My ASUS TUF-Gaming B550-Plus MB LEDs leave the GPU light (white) on, even though the POST light (green) comes on as well. I tried changing PCIe16 slots to no avail. Then I rebuilt the GPU back to original condition...the fans & light come on; but, the POST light AND the GPU light both are on...and the system won't POST. While I had the pcb isolated, I checked it over under strong lenses for any signs of burning or broken solder; but, only found a bit of thermal paste overflow by the actual GPU. I cleaned it all up with alcohol and then re-inserted it into the MB...with the result posted above.

Right now I'm back to cross-fired 480s, which is OK for now; but I'd sure like to get this figured out. Anyone at TOM'S have any clues what I could try? (I've been holding off on trying a home-remedy like reflow soldering.)

Thank you, in advance for any help ideas.

Anton

 

[CS_044]

My RX5700XT (water-cooled) had worked fine...with -20C temps since water-blocked). Turned it on as usual and the system would not post...My ASUS TUF-Gaming B550-Plus MB LEDs leave the GPU light (white) on, even though the POST light (green) comes on as well. I tried changing PCIe16 slots to no avail. Then I rebuilt the GPU back to original condition...the fans & light come on; but, the POST light AND the GPU light both are on...and the system won't POST. While I had the pcb isolated, I checked it over under strong lenses for any signs of burning or broken solder; but, only found a bit of thermal paste overflow by the actual GPU. I cleaned it all up with alcohol and then re-inserted it into the MB...with the result posted above.

Right now I'm back to cross-fired 480s, which is OK for now; but I'd sure like to get this figured out. Anyone at TOM'S have any clues what I could try? (I've been holding off on trying a home-remedy like reflow soldering.)

Thank you, in advance for any help ideas.

Anton

Defo sounds like a hardware fault on the 5700XT, when it "doesn't post" do you get any display at all, or nothing, because "no display" is quite common for failed cards.

 

[Anton Hunter]

Defo sounds like a hardware fault on the 5700XT, when it "doesn't post" do you get any display at all, or nothing, because "no display" is quite common for failed cards.

I get no display whatsoever. Its really weird though, because both the GPU light AND the POST light are "on"...at the same time. I'm resigned to taking it to a tech shop to get it analyzed/possibly fixed. If reflow soldering will fix it, I'd rather not do it at home; but, where it can be done using the correct 'machinery.'

 

[CS_044]

I get no display whatsoever. Its really weird though, because both the GPU light AND the POST light are "on"...at the same time. I'm resigned to taking it to a tech shop to get it analyzed/possibly fixed. If reflow soldering will fix it, I'd rather not do it at home; but, where it can be done using the correct 'machinery.'

If you have an igpu, could try flash the vbios on the card incase it bricked?