No one really? or you have not found someone yet with that technical knowledge. If you say there is no one around who has some knowledge on repairs on ASIC's miners, it may mean that there are no individuals who are mining bitcoins in your area, and that is unlikely, there should be at least one other person who is mining bitcoin in your city, your responsibility is to find out and reach out to them to share some knowledge on how they have been handling the challenges with mining in your city, especially with repairs and fixes for your ASIC's
This incident is exactly where I live, when the ASIC started to malfunction we had to start looking for a new one in online stores as there was no technician available to fix it. As far as I know, there are almost no shops selling mining equipment in our area, meaning we have to go to other capital cities to buy them. It is this difficulty that keeps mining from developing in the area where I live.Quote
Read maintenance and care tips and adhere to them, your ASICs may take a while to develop faults.
Stable electrical energy is needed in mining, room temperature also has a level that must be considered, if you use electricity from the government it is more risky for mining equipment, because unexpected power outages often occur, this is the reason mining requires large costs because supporting tools cannot tricked in any way. 
