It might be the I/O board. This board is a separate card from the motherboard and it has a headphone jack, a USB port and the MagSafe charger port.
Here is an interesting post for you to read through and try some of the options they suggest:
https://community.spiceworks.com/topic/2073956-early-2015-macbook-air-won-t-power-up
But, in one of the replies in this post they talk about a known good MagSafe charger not lighting up and point directly at the I/O board as the problem.
It is not difficult to do this yourself and I guess you have limited options given your location. I am not saying that this will fix your problem, but from what you have said it sounds as if it is a likely cause and therefore a good starting point.
The part is not too costly, $100 from iFixit but you can probably find cheaper on eBay. In the above post people talk about finding replacements for $30.
Here is the replacement guide from the iFixit web site, you did not say exactly which model you own, but this is the guide for the 13” MacBook Air.
https://www.ifixit.com/Guide/MacBook+Air+13-Inch+Mid+2013+I-O+Board+Replacement/15229
If you decide to try this then make sure that you purchase the right tools for the job.
I hope this helps.
Leave the battery disconnected and connect the charger. Don't touch anything and see if the air turns on by itself.
Thanks, but no light when battery unplugged. I try the above fix. I believe I can find it online here. Worth a shot. Thanks for the responses.
Good Luck