WTF, my brand new Threadripper just died. Dead short across EPS12V, and there's an unmistakable hint of magic smoke smell near the regulators. I sure hope the motherboard didn't die and take out the CPU with it...
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I had a buck do that on a VR camera rig; had a large 16v lipo on the input and >$6000 worth of GoPros (5v input) on the output. Thankfully no caps exploded, the GoPro's PMUs shut down, and the rig survived. Now I don't trust bucks w/o extra clamp protection for that kinda payload
Looks like the CPU is fine after all! I guess they just have low-ish resistance due to leakage naturally, even powered off (but at 1V that isn't much power).