This is the first DSLR repair I've tried other than replacing the LCD covers (they cannot be replaced on newer bodies any longer).
I'll buy parts from Canon, a distributor, or even ebay depending on who has it in stock. The cheap $5 LCD cover came from China, it may be a fake, but it looks and fits good. A fake piece of clear plastic isn't a concern to me, a fake battery is!
I did not take photos, I only spent a hour for the whole disassemble / reassemble process, including the replacement lcd cover. I was in a hurry to get it over with, my PC dies and I needed to put the remains back together today. I narrowed it down to a processor or motherboard issue, its not worth it to replace them, its a old i7 first generation processor. I'll probably get a new processor / motherboard / memory when Haswell E comes out. I might spring for updated video as well. In the meantime, I have a New Dell XPS 8700 arriving tomorrow, along with a SSD and hard drive. I'll remove the hard drive with windows 8.1 and put in the Samsung MSATA SSD and a 3TB Hard drive and install Windows 7 64 bit. Then, a 2nd DVD Burner. I'll rotate the oldest one (i7 2nd gen) to my workshop and use the newer one in my office. I usually upgrade every 2 years and rotate them, so the dead one is from 2008.
I'd recommend that a person get the service manual for their camera, knowing the right screws to remove plus the warnings about dressing the wires properly and placement of the light seals are worthwhile. There are instructions for shimming the lens mount, the focus screen and the sensor, but I'd only do the focus screen, since some high precision tools are needed for the other jobs that are more accurate than my 1/1000 in dial indicator.
I use frog tape doubled and stuck to my workbench in several places and place the screws on it in the approximate location that they came from. This keeps me from knocking them off and helps keep them organized. I also have a pretty good assortment of various sized screws just in case I lose one.