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Model A1286. Released February 2011 / 2.0, 2.2, or 2.3 GHz Quad-core Intel Core i7 Processor

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Only starts if I first disconnect battery for a few seconds

I have a mid 2011 MacBook Pro which shows green light on mag, but will only boot if I disconnect the battery for a few seconds. I tried 2 different batteries, both show over 95% design capacity. The laptop boots with just mag power after a few seconds without battery. I have continuously unplug the battery to get it to start. However, restart seems to work OK. Baffling...yes it is the dreaded 820-2915 but this is not kernel panicking…yet. Actually was able to run “Heaven “on it, so GPU seems fine for now.

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Ever spilled anything on the keyboard, sounds shorted out to me.

Let’s take a better look at it. Please run Coconut Battery and post your results.

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Hey Mayer, as usual, you rock. I did put the logic board into another A1286 case, therefore another keyboard, and the issue is resolved. Humble bow into your general direction,


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Jurgen sera éternellement reconnaissant.
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