[Nexus 7 2013 16GB-Wifi Model] Help with Nexus 7 Logic Board.

I have a Nexus 7 2013 16GB Wifi Model, and i bought it to a local repair shop. But it seems i was ripped off as the repairman could not repair it.

I noticed that some of the circuits are missing from my Nexus Logic board and Nexus no longer boots up.

Can anyone please help me determine these circuits? Here is a picture of the logic board.
All that is marked with a yellow star in the picture is what i am asking about...

Code:

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drive.google.com/open?id=0B7LGwJIcFvH1WUtyNWZSTnhYRFU

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And also are these parts important? Will the tablet work even without it? Where could i get a replacement of these parts?

Thanks in advance.
P.S Sorry for bad ernglish