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Ex mind 3070, is this rust ?

faceman123

faceman123

faceman123

Soldato
Joined
9 Jun 2011
Posts
3,639
Recently, my friend purchased a 3070. The temperatures are fine at the hot spot, but the screws near the display port have some rust, but there is no rust on the rest of the card or the port itself. Please see the pictures below for more information. He is unclear whether the brownish marks are rust marks or not on the metal components of the PCB. it did also have some whitish marks on some of the metal components.



IMG-20230320-235239313.jpg
IMG-20230320-235322315.jpg
 
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Where are we talking exactly? Can't see anything in those pics unless I'm missing the obvious. I doubt much of a GPU is ferrous metal, so unlikely to be any meaningful rust. If there's anything that looks brownish it's more likely to be flux from soldering.
 
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Don't see anything wrong, you could Google search images for that specific 3070 model board opened to compare

Also probably better to post back panel metal where the display ports are that's where you can tell If it's exposed with moisture
 
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Same see nothing wrong, as others said the brown areas are flux from the manufacturing process that wasn't cleaned off in the cleaning process and very normal.
 
Ah the new pics help, nice one.

I think the especially shiny parts of the solder were still in contact with the flux/are still in contact around the edges, whereas the peaks either didn't get as much contact with it or it quickly boiled off upon introduced to heat in comparison with the edges. This changes how solder flows so could change how it settles upon cooling. Bright shiny joints generally only come from liberal flux usage, whereas dull/seemingly relatively "discoloured" joints come from joints that aren't so /have been less well fluxed. Almost certainly completely irrelevant when it comes to observing the end result of machine manufacturing vs handwork which I'm referring to.

Wouldn't worry about it bruh.
 
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I once had an AV amp/receiver that I bought second hand. Upon looking down inside it from above, it had a load of brown marks similar to pics in the OP. I thought it was spilt coffee! I emailed the previous owner and he said it came like it from factory and was part of the manufacturing process. So yeah, assume excess flux maybe?
 
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