You're facing tight deadlines for computer repairs. How do you ensure quality without disappointing clients?

One thing that I have found challenging is getting a client who is not technical, to understand that a repair job done efficiently, is more important than a rushed job. I have seen that with time though, your clients will grow to trust your assessment and they will work with the time frame that you give them. Quality of work is important and if you are skilled, the repair job will always be done within standard time frames. So up your skills and build a culture of quality work.