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Apple Computing Products:
macOS - Notebook Hardware
MBP blacked out, completely nonresponsive
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<blockquote data-quote="pigoo3" data-source="post: 1518901" data-attributes="member: 56379"><p>The power switch is just a button and two wires. If you use a multimeter (putting one of the multimeter probes on each wire) and don't push the button...you get infinite resistance. When you press and hold the button...you get continuity. That's it.</p><p></p><p>As far as the hard drive. If the hard drive was dead (and was the only problem)...the computer would still turn on, you would get the normal startup chime, and you would get video on the display. The computer just wouldn't boot into the OS.</p><p></p><p>- Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1518901, member: 56379"] The power switch is just a button and two wires. If you use a multimeter (putting one of the multimeter probes on each wire) and don't push the button...you get infinite resistance. When you press and hold the button...you get continuity. That's it. As far as the hard drive. If the hard drive was dead (and was the only problem)...the computer would still turn on, you would get the normal startup chime, and you would get video on the display. The computer just wouldn't boot into the OS. - Nick [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
MBP blacked out, completely nonresponsive
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