MacBook motherboard short to ground

I have a 820-2879 with a reading of 68 ohms on PP3V3_S5. This is a short to ground correct? I injected 3.3 volts and it drew 0.2 amps. However nothing got hot enough for me to find anything. Any ideas?

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As far as I can tell 68 ohms is not a short to ground on PP3V3_5V. I installed the motherboard into a Macbook and I received a question mark folder. However I have not installed Mac OS to further test.

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