Good stability and reliability of cell phone jammer can be enjoyed by the customer

MP3 phone no sound, failure is all the ringing amplifier Weld, a long time listening to music, the amplifier fever caused by Weld, the amplifier is very small glass film welding time to pay attention, remember the direction of the IC, the temperature should to remove the glue from the point removed and then re-welding. MT series launch off first transferred to the power supply of 4.5V or so, try to see fired off does not shut down, if the shutdown, bad amplifier. If you do not shut down, the amplifier is not bad, IF and CPU fails to engage in antenna matching circuit.     cell phone jammer   adopts the foreign advanced technology according to the actual situation of mobile communication.
Standby automatically charge the maintenance of power, MT6205 or MT6218 MT6305 CPU type of combination frequently encountered automatic charge, the performance of automatic charger is connected and the charger has been said that in addition to "check the power tubes, such as does not work, little possibility of power, basically the CPU sealing off. A boot appears a few lines in English and restart the MP3 storage IC bad. The MT series camera, file storage error, you can save IC for one, can enter the download mode, can U disk in the computer format. A charger is connected, solder the CPU. The screen lights continue to flash, plus welding CPU. The human body security and property security may be threatened without using    cellphone jammer   in the flammable and explosive place.
No display, no display, dismantle it for the wrong MP3 storage models. Memory chips in the file manager inside the O bytes before formatting the computer. Not to change the MP3 store, the market there are two kinds of Samsung and Toshiba. 4.2V below the voltage does not boot, B + and an O-ohm resistor in the power of 7 feet, to short the OK. All key failure, lost check Cejian or a key is top dead does not work, then measure the voltage of each key, while for the 2.8V, the other side of the OV. Which voltage is detected it is connected to pressure Ming resistance and capacitance demolition. Generally common in the mobile water. If the voltage is all normal CPU soldered or bad. The program of mainly using large-power   phone jammer    and complementarily using small-power   cell phone jammer to supplement the dead zone is adopted.
Key line of one or a does not help, check the connection between the CPU and the key. Input circuit: positive from battery contacts to be sent directly to the power IC MT6305 4 # 7 # 19 # 26 # 47 #, midway did not have any other circuit, so the maintenance input circuit if a fault to the power IC virtual welding or bad. Boot line: very simple. Directly from the power IC 32 # sent to the power button outer one of about 3.6V (turn key inner ground). When you press the power button, power IC 32 # goes low and trigger power IC voltage output. If the boot line is bad, according to power-line without any current response. For example, some prison officers shut off the power supply of    cell phone jammer  without supervision at night and then recover the normal power supply the next morning.
Repair: power, the amount of boot key inner approximately 3.6V, if compared to the power IC 32 # Weld or bad. Boot request line: very simple, when pressing the start button, the boot request diode G17, # request signal "notice" CPU. If the request diode or the CPU17 # Weld or bad, the CPU can not receive the boot request signal, it is not "approved" phone running the boot process, which will cause that does not boot, and the current of the current software (because the software is not working). Summary: Power line or request bear bad will cause the boot, but the current response. The boot line is broken no current response, the request lines to bad compared to the software current.   cell phone jammers  has machine body made of aluminum material and good heat dissipation performance.
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