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Apple Computing Products:
macOS - Desktop Hardware
iMac mid 2011 21'5 no chime no boot fans spin
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<blockquote data-quote="chscag" data-source="post: 1814878" data-attributes="member: 46727"><p>I think your supposition that it might be a bad logic board or GPU may be correct. I guess while you have it apart you can always look for the obvious, but sometimes things that you can not see without diagnostic equipment could be the culprit.</p><p></p><p>I seem to remember that some 2011 iMacs had problems with a failing GPU so that might be where you can start. My old 2011 21.5" iMac is still going strong. I gave it to my granddaughter back in 2013 when I purchased a new iMac.</p></blockquote><p></p>
[QUOTE="chscag, post: 1814878, member: 46727"] I think your supposition that it might be a bad logic board or GPU may be correct. I guess while you have it apart you can always look for the obvious, but sometimes things that you can not see without diagnostic equipment could be the culprit. I seem to remember that some 2011 iMacs had problems with a failing GPU so that might be where you can start. My old 2011 21.5" iMac is still going strong. I gave it to my granddaughter back in 2013 when I purchased a new iMac. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
iMac mid 2011 21'5 no chime no boot fans spin
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