For repairers

Camera Repair Flickr Pool 
A pool on Flickr with photos of camera designs, including digital cameras.

Electronics Repair
Tips and guides by Jestine Yong to repair load of electronics products

This site is building a crowdsourced database of help queries and personalised answers.

Future proof: Tim’s laptop service manuals
Professional, official documents published by the various laptop makers, either for their own technicians or for the use of the general public

iFixit makes it easy to fix things with online step-by-step repair guides, troubleshooting tips, and a thriving community of repair technicians who want to help

Powerbook Medic
An online library of repair videos mostly of Apple products.

Raising the dead: Can a regular person repair a damaged hard drive?
Very interesting article, debunking some of the myths on repairing hard drives. Also check the comments streams on this article on Slashdot

Reddit’s Computer Technicians
This space is for people who are repair professionals or aspire to be. “End users” encouraged to use /r/techsupport

Repairs Universe video library
A growing library of videos of smartphone and tablet repairs and teardowns. FAQ
A comprehensive historical archive of tips and guides on repairing many kinds of consumer electronics