review book/test

For the past 6 months my tech repair job has become a customer service job and i need to get up to speed on my electrical skills. can anybody suggest a good review guide? I still have all my text books from school but am looking for a comprehensive study guide. Also am looking for examples of tests given during tech interviews. Thanks.

As a tech, I learned that block diagrams really helps me repair consumer goods. You learn over time how to repair them. Books, I don't know what you are repairing, but TV repair guides and troubleshooting, VCR repair guides and troubleshooting should be easy to locate. Try a search engine. http://www.alltheweb.com