I would try an external display via the Thunderbolt ports (direct via a TB display, mDP display or via a HDMI/VGA adapter) just to be sure the port isn’t bad.
At this point you clearly have to replace the battery and you may have another heavy expense with either a new display or logic board if you can’t find an independent Mac repair shop which can really dig down into your problem.
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I personally own a 15” Unibody Mac which I’ve repaired quite a few times with replacement batteries as well as upgrading the drive twice now to a 2GB drive. I also have two 2015 MacBook Pros which I travel with (one is a backup) when I go on a shoot. I use Thunderbolt external drives to hold my work and the internal is just the OS and Apps with a 1TB drive.
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I personally own a 2012 15” Unibody Mac which I’ve repaired quite a few times with replacement batteries as well as upgrading the drive twice now to a 2GB drive. I also have two 2015 MacBook Pros which I travel with (one is a backup) when I go on a shoot. I use Thunderbolt external drives to hold my work and the internal is just the OS and Apps with a 1TB drive.
There is a point you outgrow or costs to repair can require a hard decision if it makes sense to get a replacement system as it might be cheaper! I would look for a 2015 system which is in good shape.
I would try an external display via the Thunderbolt ports (direct via a TB display, mDP display or via a HDMI/VGA adapter) just to be sure the port isn’t bad.
At this point you clearly have to replace the battery and you may have another heavy expense with either a new display or logic board if you can’t find an independent Mac repair shop which can really dig down into your problem.
I personally own a 15” Unibody Mac which I’ve repaired quite a few times with replacement batteries as well as upgrading the drive twice now to a 2GB drive. I also have two 2015 MacBook Pros which I travel with (one is a backup) when I go on a shoot. I use Thunderbolt external drives to hold my work and the internal is just the OS and Apps with a 1TB drive.
There is a point you outgrow or costs to repair can require a hard decision if it makes sense to get a replacement system as it might be cheaper! I would look for a 2015 system which is in good shape.