The logic board nor the display on this machine have ever faltered.
I upgraded the machine to Big Sur using a popular patching program along with an upgrade to the latest Broadcom WiFi/BT card (thanks to an enterprising young man) and am running 11.2 currently with no issues outside the ones that are plaguing even the newest MBPs. Both fans have been replaced and most recently I replaced the right side speakers as the woofer section had started to rattle. I have replaced the keyboard only ONCE in that entire time. The 1TB HDD is still used as an in-machine Time Machine drive for Big Sur. I upgraded to 1TB SSD and a 1TB HDD and moved to APFS once Catalina came along using the HDD as an in-machine daily clone backup drive (used SuperDuper until Big Sur negated the ability to easily create a bootable clone). I upgraded the SSD to a larger one and rolled the SSD and HDD into a FUSION drive using the tools apple made available to anyone comfortable with the command line, which I ran with zero issues for several years. I swapped out the super drive (CD/DVD burner) for an SSD (initially a relatively small one to just hold the OS). I upgraded the HDD several times (started life as a 256MB HDD). This machine has a full compliment of ports with NO dongles needed! I upgraded the ram over time to its max 16GB. This machine was the last of the totally user repairable notebooks Apple made. Without question, a fine example of solid engineering. My daughter gave me this machine as a christmas present in late 2012. A Battery replacement is available for this system (see the bottom of the product page for installation video).I am among those still using a mid 2012 non-retina 15" MBP.And of course, you’ll need a larger 2.5-inch HDD or 2.5-inch SSD. Follow this guide to do the installation. Adding a second drive requires replacement of the existing DVD-drive using this Dual Drive Kit, which also contains all of the required tools and driver bits.You can keep your old 2.5-inch HDD in the enclosure for external storage. To clone your existing OS/app setup first, purchase a cloning cable or 2.5-inch HDD/SDD enclosure to connect your new SSD to your mac, then use the Super Duper app to perform the clone, then switch the drives.Plus you’ll need a larger 2.5-inch HDD or 2.5-inch SSD. To upgrade the existing 2.5-inch HDD to a larger capacity HDD or high performance SSD, purchase the same tools as for the RAM upgrade above, and follow this guide. By default, this model is configured with a 500GB 2.5-inch hard drive connected to 6.0Gb/s SATA port.Then follow this guide to install the RAM. All the tools you'll need are in the Essential Electronics Toolkit and an Medium Anti-static mat is also recommended. Although Apple only officially supports 8GB total installed RAM, this MacBook Pro can actually be upgraded to a maximum of 16GB (8GB + 8GB) of RAM, which we have confirmed with many 100's of our customers.
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