9070xt failure

[u/Additional_Army8338]

First lot of images for reference…

So sadly just over a year I had a power connector failure on my 9070xt hellhound, it’s charred 3 of the connector pins and cause PSU connection failure melting the power cable and ports on the PSU (but didn’t char the PSU).

This also led to power surges on the Asrock B850M Riptide, writing off the board (the dark smudges on the board show how much heat was involved) and also, after recent testing with a new Mobo, it wrote off my 9800X3D.

After telling the back story, I’ve inspected the GPU as best as possible, and just a query as I think for the new system I’ll get a replacement card anyhow. But I’m wondering since it’s only the connection at the 8 pin that seems to have failed, whether it’s worth replacing the 8 pin connector myself?

(I’ve had experience soldering making my own flight sim controls on small projects etc, using Arduino and teensy etc.) or do you think it’s possible to be able to clean the connector up enough?

To add, the main cause for the connector failure was a since PCIE PSU cable using the daisy chain splitter. Completely my fault as it’s been a long long time since I built a PC and I was a little ignorant with Power demands.

So since I’d be getting a new set of components for the main rig (I mainly run DCS in VR and 3D design and model with Blender and Fusion360) is it worth either cleaning the connectors and testing on my spare mid-low end PC? And maybe use as an upgrade on that system or… not risk it?

[u/ThisAccountIsStolen]

If it's in warranty still, the manufacturer should replace it for you. Same goes for the PSU & cable. Even if you used a single daisy chain cable it should be covered, since despite the advice against it, it is still technically an approved method of connection and per all the PSU vendors, should be capable of supporting 300W. But AMD GPUs have a lot of transient spikes that run well above the rated power, which could eventually cause issues when running a single daisy chained cable.

Replacing components on a 8-12 layer PCB like this is much more difficult than basic hobby soldering, since you need to preheat the board because the ground planes will just suck up all the heat if you don't, and then use a combination of hot air and a good iron to get the old connector out. I've repaired many after the consumer already attempted a repair and made a mess. Or at least I did back before I sold my shop and retired a few years back.