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<blockquote data-quote="techiesteve" data-source="post: 1893988" data-attributes="member: 98520"><p>I repair the 2015, 2016 and 2017 MacBook 12&quot; Retina. From your description the display assembly is failing. other common faults are failure of the IPD cable, this runs from the front of the logic board to the underside of the top case/trackpad. Sometimes after only disconnecting it once carefully it can fail. The I/O cable is also unreliable, that connects the I/O board (USB-C connector) the the logic board. Also the logic boards fail with dead symptoms and no 'ding' when power is applied. I've never had the cable that runs from the back of the logic board to the board connected to the display fail. Apple always supplies a replacement cable with exchange displays. Along with the awful keyboard they were never that reliable. An AASP or ARS always use a jig to support the MB when it is either partially or fully open. This avoids putting pressure on the delicate flex cables. The 2015 model is now vintage, spares only currently available until exhausted, no more to be manufactured.</p></blockquote><p></p>

[QUOTE="techiesteve, post: 1893988, member: 98520"] I repair the 2015, 2016 and 2017 MacBook 12" Retina. From your description the display assembly is failing. other common faults are failure of the IPD cable, this runs from the front of the logic board to the underside of the top case/trackpad. Sometimes after only disconnecting it once carefully it can fail. The I/O cable is also unreliable, that connects the I/O board (USB-C connector) the the logic board. Also the logic boards fail with dead symptoms and no 'ding' when power is applied. I've never had the cable that runs from the back of the logic board to the board connected to the display fail. Apple always supplies a replacement cable with exchange displays. Along with the awful keyboard they were never that reliable. An AASP or ARS always use a jig to support the MB when it is either partially or fully open. This avoids putting pressure on the delicate flex cables. The 2015 model is now vintage, spares only currently available until exhausted, no more to be manufactured. [/QUOTE]

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