Hi forum.
I'm working on a macbook pro, model a1708, that is running extremely slow.
Everything on it seams to work just fine, it just works extremely slow; painfully slow; especially running macos (windows and linux actually run OKish on it, slow, but usable).
One other symptom of the problem with the machine is that the fan is always running at full speed.
This machine has been worked on by someone else previously; they tried to repair it, but with no success. The motherboard does have sings of being worked on, but it all looks good/OK; like I said before, the system is, for the most part, fully working.
The previous person that worked on the machine just told me that he suspected that it was a problem with some sensor, but couldn't figure out more. Once I was told that the computer ran extremely slow with fan at full speed, that was also my initial guess; that it would be some issue with some sensor.
So, to start with it, I did a full visual inspection of the motherboard under the microscope, to look for any liquid damage, corrosion, burned/damaged components or any other fiscal damage; it all looked good expected for a broken off capacitor that had been ripped of the motherboard; I knew that it wouldn't be the cause of the issue, but I replaced it and fixed the cap anyways.
Next; and because I had an identical machine laying around, and to rule out any issue with trackpad, flex cabels, battery, display, etc, I swapped motherboards with a know good working machine; the anomalies persist. So, not the display, not the trackpad, etc etc.
Next, since I had an equal fully working motherboard, with the motherboards side by side, I started measuring and comparing voltages, 20v ok, etc etc etc. Couldn't for the life of me find anything off on the motherboard.
I have spend hours measuring and comparing the boards, with no luck. I then booted linux and took a reading of the sensors, in hope you guys could point me in the right direction on this one; because i'm at a lost on this one.
Most of the sensors with odd readings I either can't identify them on the schematic/boardview, or they are not even on the motherboard.
Would really appreciate some help/guidance on this one guys.
Thank you very much,
Dia
I'm working on a macbook pro, model a1708, that is running extremely slow.
Everything on it seams to work just fine, it just works extremely slow; painfully slow; especially running macos (windows and linux actually run OKish on it, slow, but usable).
One other symptom of the problem with the machine is that the fan is always running at full speed.
This machine has been worked on by someone else previously; they tried to repair it, but with no success. The motherboard does have sings of being worked on, but it all looks good/OK; like I said before, the system is, for the most part, fully working.
The previous person that worked on the machine just told me that he suspected that it was a problem with some sensor, but couldn't figure out more. Once I was told that the computer ran extremely slow with fan at full speed, that was also my initial guess; that it would be some issue with some sensor.
So, to start with it, I did a full visual inspection of the motherboard under the microscope, to look for any liquid damage, corrosion, burned/damaged components or any other fiscal damage; it all looked good expected for a broken off capacitor that had been ripped of the motherboard; I knew that it wouldn't be the cause of the issue, but I replaced it and fixed the cap anyways.
Next; and because I had an identical machine laying around, and to rule out any issue with trackpad, flex cabels, battery, display, etc, I swapped motherboards with a know good working machine; the anomalies persist. So, not the display, not the trackpad, etc etc.
Next, since I had an equal fully working motherboard, with the motherboards side by side, I started measuring and comparing voltages, 20v ok, etc etc etc. Couldn't for the life of me find anything off on the motherboard.
I have spend hours measuring and comparing the boards, with no luck. I then booted linux and took a reading of the sensors, in hope you guys could point me in the right direction on this one; because i'm at a lost on this one.
Most of the sensors with odd readings I either can't identify them on the schematic/boardview, or they are not even on the motherboard.
Would really appreciate some help/guidance on this one guys.
Thank you very much,
Dia
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