Looks like chemical corrosion to me, or perhaps melted tubing.
He says on one site "My PC got turn on with out the pump on and the pressure from the built up heat burst one of my tubes!!!"
I don't quite buy it. Water density doesn't increase by any more than 3% from room temperature to near-boiling. As long as there's flexibility in the system to account for this increase in volume (which there is, unless the tubes here were incredibly brittle), there's no way increased temperature can burst anything.
Now, if this dupe noticed what was going on and turned on his pump only *after* his block and the tubing attached to it was at a nice 60-80 degrees C, I could see the water hammer busting open a weakened and melted piece of tubing, such as that kink right above the hose barb.
I just can't imagine the tubing getting that badly damaged by heat *before* the CPU was toasted.
Alchemy
|