I think AI will solve this in the future. It's already been super helpful to me at scouring the internet for well reviewed products and services. It will only get better as its parametric knowledge improves, its ability to statistically analyse businesses and "reviews" and exclude the fakes, malicious, or predatory, and its ability to problem solve laterally or in unexpected ways.
FYI there are already handyman sites like Taskrabbit in the US which help connect you with people who can do these odd jobs. They have review systems as well. But I don't know if many of them cater to electronic or more skilled repair.