From my experience, vintage gear (especially turntables) available in the Indian market were not used or maintained properly during their running days. Turntables are essentially simple devices so every other quack who tinkers with a few can easily claim to be Technicians. I have seen some examples of turntables repaired by so-called "expert" technicians that look and play great, but when one looks inside, there is either a jugaad job done or a repair job with equivalents (usually salvaged from scrap TTs or from a junk box) or there are modifications with short cuts. A turntable must never be repaired this way. Every component the manufacturer used had a specific reason and hence, only originals should be used. This brings up another problem - where to source parts from?, how expensive is it going to be? The real answer to these questions is - it is not difficult, just requires some patience. If one has access to regular travellers, one can save on shipping. Developing relationships with online sellers bring discounts. There are indeed many ways

The issue with jugaad techs are that their primary objective is - make the platter turn, get the TT to sing, make the cosmetics look good. The turntable singing and looking good is only the first stage of the process. Calibration and accuracy is what makes it sound great. In my view, one would need to have at least 8-10 years experience with TTs and records to be good at calibrating. Calibrating is not just a technical skill. One must also be a keen music enthusiast and music lover the enjoy the fruits of calibration or detect the flaws of calibration
There are 2 easy ways out: (1) buy a new TT, use it for a few years, buy another TT, repeat the process (2) just as how we learn driving in an old bashed up car and then buy a new one, pick up some scrap TT (or watch youtube videos) play around with the internals and learn how it works. They are generally simple machines (with the exception of record changers). Once you master the tricks of the trade, then buy a good vintage one, maintain it and enjoy it for life. The best person/s to care for a child is the father or mother or both. The best person to care for a TT, is its owner.