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Corroded Vega64: what are these components?

Hi all,
 
You know the story about why bugs are called bugs, right? Yeah well, turns out it can actually happen.
 
TL,DR: go to the last picture, can you tell what those corroded components are?
 
I had this Vega for a bit more than a year, solid GPU, stable OC, life was cool. I mostly play BFV and Overwatch @1440p, again blazing fast. A couple of weeks ago I got the latest Civ VI expansion and to my surprise after 30 min of gaming or so...bang! black screen & fans 100%. Nice. Initially I though may be software issue? I'll figure it out later. In the meantime, a mate insisted I try Warframe so I did. After 20 min of gaming, some story as with Civ.
Tried many things, ended up following this guy's advice and check the GPU's thermal paste.
 
As soon as I removed the Vega from the slot I noticed some corrosion on the inside side of the bracket close to the HDMI. WTF?!
 
IMG_7403.thumb.JPG.73aaceba86bbead7fb0f291b2eeecf99.JPG
 
 
While inspecting the board some white sh*t was coming out from it. Was that burnt thermal paste or what? 
Next, I removed the backplate & heatsink and found the victims.
 
IMG_7405.thumb.JPG.b53898d3cb1b88342dcf3bd0861490c0.JPG
 
IMG_7404.thumb.JPG.bad32636ee36f85d01a2b0ccfb33179d.JPG
 
Clearly that could be a great reason why I was getting those reboots, but still, how the hell did that happened? 
I could see some corrosion and more of that white crap close to the fan so the next step was to disassemble the heatsink. To my surprise the 3 bottom screws were totally corroded so they basically fused with the housing, my only option was to brake the housing... so I did. 
Once the housing was opened, I saw what I thought was an IT myth:
 
IMG_7406.thumb.JPG.8fa532079e7ced60e3dd60e68a2a352b.JPG
IMG_7408.thumb.JPG.852aabb05c1d9d419f0d570145a4537d.JPG
 
So yeah... a bug.
I would assume that the moth crawled into the heatsink though the GPU slot (as I got filter everywhere else) and was having a nice nap when I turned my PC on. Probably due to the heat, that created condensation and eventually corrosion.
 
What's the end of the story? Cleaned everything, re-pasted the GPU and re attached the back & front plate without the housing. Everything works fine, temps are cool and the black screen/reboots are gone.  Only thing that's not working fine is the Vega's sound output, there's sound but with a cracking. 
 
Would anyone know what these components are? They read "L1000" & "L1001"
 
IMG_7404.thumb.JPG.bad32636ee36f85d01a2b0ccfb33179d.JPG
 
To sum up, bug are not just a myth.
Cheers.

IMG_7407.JPG

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12 minutes ago, AdrianG said:
-SNIP-

Yeah that looks like it was used in a very harsh environment with extreme humidity like in a garage that was not temperature controlled. Those rusted cubes are potted inductors or also known as chokes. 

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you live in a rainforest by the shore of the sea?

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43 minutes ago, AdrianG said:
IMG_7405.JPG
IMG_7406.thumb.JPG.8fa532079e7ced60e3dd60e68a2a352b.JPG
IMG_7408.thumb.JPG.852aabb05c1d9d419f0d570145a4537d.JPG

Common occurrence with the moths, but if doubt its what caused that corrosion, there's just too much and its all over the board /heatsink.

Curious as to your local weather conditions aswell. 

From my experience finding parts for graphics cards can be frustratingly difficult.

Those components in the top picture look like they got a little toasty too. Most likely diodes.

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L means inductor.

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1 hour ago, Jurrunio said:

you live in a rainforest by the shore of the sea?

Used to live by the sea, now I'm 2km away.

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1 hour ago, r4tch3t said:

From my experience finding parts for graphics cards can be frustratingly difficult.

Those components in the top picture look like they got a little toasty too. Most likely diodes.

After re-pasting, it's working fine. Even though it's probably a dead man walking...

 

1 hour ago, r4tch3t said:

Common occurrence with the moths, but if doubt its what caused that corrosion, there's just too much and its all over the board /heatsink.

Yeah I thought that was a bit too much for a moth...

The thing is that's the newest component of my rig and the only one which suffered corrosion. Rest of the hardware is 2-3 years old and no sign of corrosion.

I live in Sydney, 2km from the sea, 60% humidity. 

 

PS: To be fair, non-inox parts of my motorbike get corroded AF if I don't treat them but bike sleeps on the street so it makes more sense.

 

 

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