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First: Sorry for my misspelling. :) I am using ASD EFI. My understanding is that this is closer to the hardware and better for things like sensor diagnostics. Or am I mistaken here? You are right that the only proof is to measure it. I will do and report! Thank you! Another question when...

Battery from a different A1286 that does work there normally does not fix the problem here and neither does the battery from this machine here reproduce a problem in the other A1286. In short: The problem sticks to the logic board and does not move over with the battery. That's what I mean when...

Thank you for your answer, Duke. I am not sure what you're trying to tell me. I wrote that I replaced that battery with another battery that was and still is "known good" to no avail. Same problem. So how do I have to interpret your answer, Duke? Thanks. EDIT: I have read the schematics a...

Hi, I am not new to component level repairs but also not a pro at all. Have done some work and still learning. The machine I am talking about today is a friends 2011 MBP that I am trying to diagnose and repair. To make a long story short: All I know is that the battery was swapped for a new one...