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Apple Computing Products:
macOS - Desktop Hardware
imac power testing
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<blockquote data-quote="KeefyBoy" data-source="post: 1321499" data-attributes="member: 221792"><p>Returned from holiday during which there had been at least one power cut. My old iMac G4 17" 800Mhz would not boot at all (nothing).</p><p></p><p>So, checked online and replaced the internal battery. Still nothing.</p><p></p><p>Looking at the service manual (page 117) there seems to be a helpful way to test the various voltages (battery, 12v and main); nice description and image.</p><p></p><p>BUT, my iMac does not have the voltage test points shown or anything remotely like them that I can see.</p><p></p><p>1. Has anyone else had this problem?</p><p>2. How else should I test the power supply (i'm assuming that power is the problem)</p><p></p><p>I am an electical engineer so quite happy digging about inside!</p><p></p><p>Thanks in advance</p></blockquote><p></p>
[QUOTE="KeefyBoy, post: 1321499, member: 221792"] Returned from holiday during which there had been at least one power cut. My old iMac G4 17" 800Mhz would not boot at all (nothing). So, checked online and replaced the internal battery. Still nothing. Looking at the service manual (page 117) there seems to be a helpful way to test the various voltages (battery, 12v and main); nice description and image. BUT, my iMac does not have the voltage test points shown or anything remotely like them that I can see. 1. Has anyone else had this problem? 2. How else should I test the power supply (i'm assuming that power is the problem) I am an electical engineer so quite happy digging about inside! Thanks in advance [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
imac power testing
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