The repair tag is a meta tag. It cannot stand alone as a question's only tag and serves no useful purpose for categorizing questions. It should be burninated. Perhaps even blacklisted. There's little reason to look through all of the questions with this tag first, none of them need to have it.
I'm not so sure about lcd and laptop. A cursory glance at the list of questions with those tags does make my trigger finger itchy for the close button. But they are not all inappropriate. And I'm not convinced this is truly the fault of the tag. I can imagine on topic questions for which either or both of those tags would be appropriate.
There is a definite argument for looking through these two tags to find low-quality questions to retag and/or close. But I'm not convinced either of these tags should be burninated outright, much less blacklisted.
More generally, I simply don't buy the argument that having "off topic" tags "encourages" people to ask off topic questions. First of all, I don't think people look through the list of tags first before they ask their question. I don't think seeing tags like these gives them the impression that their question is on topic. If they were going to try and investigate the topicality of their question, they would logically start with the About page or the Help Center. Either or both of those would quickly dispel any confusion. Second, we have lots of tags that could theoretically justify off topic questions. For example, we have an osx tag. And a windows tag. So do lots of questions on Super User. But those tags are completely reasonable for a programming site, too. You can think of them as having an implicit "-programming" at the end: windows-programming is, in fact, a synonym of windows.