My Phone not switching on

@lebza53193 "I was told that the motherboard is damaged" is absolutely non-descript. It does not tell you anything and when they say this, they mean you need to replace the main board. At least they should check this a bit further and narrow it down for you.

I suggest you start of by using the Samsung flowchart for the No Power situation.

To find the individual component to check,, use the search function of your PDF reader on this document. A22 Component Layout

Of course you also want to do the basics. Charge your battery for a couple of hours and try to press volume up, home button, power at the same time.

Let us know what you find out.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.