Dead Aspire Nitro Black VN7-791G-7484 - Where to get parts?

I have an acer aspire nitro black laptop that I bought at the end of January 2015 (Meaning I had it one year and 4 months when it broke).  The model number is VN7-791G-7484.

The laptop is completely dead.  It was on when I went downstairs and off when I came back up with 0 signs of life.  Not even the light on the side with the cord plugged in was on.  I took it to the local repair guy and he verified that there is no power anywhere and that there was probably a short in the motherboard and I need to replace it.  He checked the websites where he usually buys replacement parts for laptops and the only motherboard he could find was $700, and that would not even include the labor to fix it.

It is out of warranty and when I looked at the website the only repair options in the out-of-warranty section did not seem like they could help with my issue since it looked like a hardware problem.

My question is...where can I get replacement parts for my laptop or find an official repair place that would actually have access to these parts for a reasonable amount of money?  Obviously I am not going to pay the price of a new laptop to fix the old one.