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Is this waterblock leaking?

A

allen5055

[H]ard|Gawd
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I took apart my loop to perform some upgrades, and I noticed this on one of the waterblocks. The image doesn't capture all the detail, but there's sort of an oxidized brown ring around one of the corners of the waterblock, as if water was seeping out and then stopped right there. I've only been running the waterblock for a week now. I tightened up the bolts a tiny bit in the area.

20140115_150457.jpg


I was thinking that I'm probably OK. I haven't seen any oxidation/change in color of the other areas that I've had water running through over the last week so it's doubtful that the copper in that region changed color just over the last couple of days. The ring of color is probably from manufacturing I'm guessing.
 
Certainly looks like a possible leak.

Put some color in the fluid, attach a white tissue near the area(s) in question and run for a few days. If it is leaking and the tissue stains - you're on to it.


Random thought: Maybe track your start/stop cycles - thermal differences. Maybe thermal expnasion at different rates(perspex vs copper) = minute gap for a few moments?? Once warmed up, all things are constant.


Also, be open minded, while this looks like the area in question, I once had a water block that had a pinhole on the other side. Since it was mounted upside down(GPU) it coolant worked it's way around to the other side where I thought it was a fitting leak. Took me ages to find the true source.
 
I kinda think that if this was a leak it would be so small that it would evaporate off the hot card before it could damage any electronics. My cards are locked into a four-way waterblock unit and I can't really see that area well. I've shone a flashlight on it and I can't see obvious water leaking, so if there's a leak it's very tiny.

I'll watch my reservoir levels over the next few weeks. I don't have any dye in my distilled water but I'm thinking about it. I have clear tubing. I've heard that the dye screws up the tubing though.
 
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