Help:galaxy s3 i9300 emmc chip changing

i have 1 s3 i9300 EMMC chip is damage

so i remove the emmc chip carefuly but,after remove i see on the board some ball is missing.

itry to make reballing board point but cannot

aftar that i change also emmc chip but phone is now not woking nd no power.

and i return back to original chip is also same no power nd nothing.



so please tell me now what can i do or how i can working this phone.

please please please help me to fix this problem if anybody know aboute this!!!!



Many many thankssss in advance.

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