RX 480 8GB help

[Hebbes]

Do the components between the MOSFET heatsink and Caps look cooked, or is it just me?

[FAZIN]

A little dusty maybe, the lighting isn't the best to get a good look.

[YoungBlade]

It seems like just dust to me as well.

 

Is the card having any issues when installed?

[Hebbes]

15 minutes ago, YoungBlade said:

It seems like just dust to me as well.

 

Is the card having any issues when installed?

Yeah, PSU wont turn on when I have it plugged in. It was a free untested card(pulled from ewaste bin) so I'm not out anything and I have a 1660Ti right now and 2060 going soon. Honestly was hoping this might be salvagible enough to resell cheap to help with the costs of the 2060. But if the MOSFETs are gone then yeah not worth it. 

[YoungBlade]

1 minute ago, Hebbes said:

Yeah, PSU wont turn on when I have it plugged in. It was a free untested card(pulled from ewaste bin) so I'm not out anything and I have a 1660Ti right now and 2060 going soon. Honestly was hoping this might be salvagible enough to resell cheap to help with the costs of the 2060. But if the MOSFETs are gone then yeah not worth it. 

I'm not seeing anything obvious, so to look at the MOSFETs and see if one of them is blown, you'd have to remove that heatsink.

 

The issue could also be somewhere between the PCIe power connector and the rest of the power delivery system.

 

A PSU not turning on the system when a card is installed usually indicates a power delivery issue, but you'd have to do a full teardown removing all of the heatsinks to see if there's any damage that's visible. And there might not be visible damage. If there's a short between layers of the PCB, you might never be able to tell with the naked eye and you'd have to break out a micrometer and start poking.

[Hebbes]

On 1/23/2026 at 8:33 AM, YoungBlade said:

I'm not seeing anything obvious, so to look at the MOSFETs and see if one of them is blown, you'd have to remove that heatsink.

 

The issue could also be somewhere between the PCIe power connector and the rest of the power delivery system.

 

A PSU not turning on the system when a card is installed usually indicates a power delivery issue, but you'd have to do a full teardown removing all of the heatsinks to see if there's any damage that's visible. And there might not be visible damage. If there's a short between layers of the PCB, you might never be able to tell with the naked eye and you'd have to break out a micrometer and start poking.

System works fine with my other card. Im going to just assume it's the MOSFETs. Might pull the heatsink later today if I feel up to it in this cool we are getting in the Midwest. I'm not out anything on this. It's not the end of the world if I can't get it working. Just trying keep a GPU from getting stripped for metals if I can like I do with CRTs and RAM.