My Walkera Mini CP cannot bind after crash

[hatsuki]

Hello friends,
My Walkera Mini CP cannot bind after crash. I have found a little information about this topic here at the forum. I would appreciate if anyone let me know any suggestion to learn how to repair it or to ask for any qualified specialist.

Thank you in advance for any help
Equipment: Walkera Mini CP, Devo 7E

[darknight736]

hi
a got few this problem with my mini i burn 2 main board
check this first

power connector (highly recommend micro dean conversion)
power cable at main board (crack solder)
small chip lower right corner of the main board (i broke one in hard crash)
big black chip center main board (broke it in another hard crash)
also check the antenna wire