My iMac's original 250 GB hard drive failed. Since it was a 2008 model, full repair at a service center would cost more than the computer was worth. Aside from the HD, it was in pristine condition & had an Intel processor that could handle the latest version of OSX (Yosemite), so I felt it still had some life in it. I bought a 2 TB drive from IFIXIT and installed it myself. I also upgraded the RAM while I was at it. I'm happy I did it!
The repair went well. The overview video and step by step directions are extremely well done - clear & thorough, with tech notes that point out helpful little things that only a full time computer tech would know.
I'm detail oriented by nature. Whenever I follow any kind of written or video instructions, I usually find things that could be presented better. You guys do such an impressive job that I have nothing to say but THANKS!