When the phone is powered on, found to have severe leakage, leakage current of about 0.5 a, quite serious. Press the power button, mobile boot up, current about O.6~0.7 a beating, finally stabilized at between 0.5~0.6 a, signals, but no. Based on the above, preliminary judgments are as follows:ttgservice manual download site
Power leakage, the fault could be: power supply module is damaged, communicates with the battery cathode to ground component (for example: Electrolytic Capacitor, reverse protection diode, etc), a charging circuit, amplifier may be damaged.ttgservice manual download site
According to the phone can function properly powered on and you have reception, you can deny the possibility of power IC damaged because power IC damaged, then the power supply output is not normal, power output is not normal, then the RF Circuit is not working properly, then it should not have signal (signal indicates the receiving circuit work correctly).ttgservice manual download site
Remaining points of failure are possible, which most likely to do? by checking the device has traces of repair and it is filled with Rosin, also is the first repeat!ttgservice manual download site
Power up the phone after cleaning, test machine, unchanged. Estimation of anthropogenic factors that damage is unlikely, then, in sequence to check the amplifier circuit, the charging circuit and earth fault protection circuit. When the removed power amplifiers, and found Buran leakage, basic can determine is the cell phone leakage caused by damage of the power amplifier ...ttgservice manual download site