No. everything looks all right.
My friend(PCB expert) had also checked that for me. He said may be the capacitor or transistor is broken.
But cann't change it if we don't know the values of them. Maybe would like to finde out the issue if i have time.
Anyway thx for the ideas. just bought a new ESC to fit my 200. don't want to spend more time on it.
I'v got the last exam in April. must consentrate on it.