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Apple Computing Products:
macOS - Notebook Hardware
Puzzler: A1707 unresponsive kbd, only boots with J6951 unplugged! I2C?
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<blockquote data-quote="iggibar" data-source="post: 1853768" data-attributes="member: 97843"><p>What kind of diagnostic testing have you done besides unplugging the keyboard? </p><p>Have you looked at boardview diagram to locate possible related components?</p><p>Have you looked at those components for continuity or shorts?</p><p>If that yields nothing, I would look at the components with an infrared camera heat detector when the computer turns on and after when it no longer turns on. There should be a component that heats up more than usual, and that will most likely be the part that needs replacing. This can also be done by using alcohol, but it will take MUCH longer to figure out which component is bad if you can't isolate the problem area.</p></blockquote><p></p>
[QUOTE="iggibar, post: 1853768, member: 97843"] What kind of diagnostic testing have you done besides unplugging the keyboard? Have you looked at boardview diagram to locate possible related components? Have you looked at those components for continuity or shorts? If that yields nothing, I would look at the components with an infrared camera heat detector when the computer turns on and after when it no longer turns on. There should be a component that heats up more than usual, and that will most likely be the part that needs replacing. This can also be done by using alcohol, but it will take MUCH longer to figure out which component is bad if you can't isolate the problem area. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
Puzzler: A1707 unresponsive kbd, only boots with J6951 unplugged! I2C?
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