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Peter Tropper
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My Mac will not power up?

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Tried different power cords. is there a fuse or breaker? How do you test power supply?

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rj713
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You can check out the power supply by plugging in a USB powered device. If the the device works the power supply should be good. Ralph

Would you give a link on this?

mayer,

Step 5. Ralph

rj713,

Thanks - no power at USB - taking it in for new power supply

Peter Tropper,

+ for the link although you have to press the power button to use this test, that's where my question came in. Thanks for the trouble of looking this up!

mayer,

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