The technology of producing cell phone jammer can be improved

To borrow the teacher's words of repair not boot failure, the theory is difficult to play in the maintenance of the application, the reasons are twofold: First, software is a black box, no one knows within the CPU is now running what source (Novo source The code can also reasoning); Second, the mobile phone with a microcontroller, the biggest difference is that many modules work together, the circuit too much. In addition, the use of the BGA, some signal measured undetectable. The manufacturer of cell phone jammer should improve and enhance the technology.
Therefore, the current method and resistance method to repair not boot failure better detection tools. The ammeter on the current jitter, CPU internal procedures do not know to run thousands of instructions. Because of this, destined to the current method can only be used as a macro judgment. If you want to micro-detection, only using a resistor voltage method and waveform law. In terms of probability, fault repeatability concurrency. Therefore, based on experience, the current method is sometimes accurate judgment of some of the often bad module. In my personal experience on the application of current law in the maintenance of cell phone: repair not boot is the best, no signal, do not launch followed. Maintenance experience reaches a certain level, the current method is able to speed repair of mobile phones, as I serve a customer to listen to the customer oral phone is failure. The technology of producing cell phone jammer can be improved.
I often do not disassemble will be able to determine the point of failure where, of course, and the current method repair are long-term first-line maintenance experience accumulated. As some fault: Do not display the button is not working, does not know the card sent by the noise, then send, is not Please contact service provider failure, the current method is groping in the dark is not as Repair mobile phones of the current method also has limitations and does not try all the mobile phone failure, in general, only a few large parts of the logic of the Main effective and the highest is only 60% of a maximum. Fell to damage the phone RF receiver section above the fault there are two components damaged, the accuracy of the current law is basically finished. It is the process of assembling cell phone jammer .More and more market shares will be taken for cell phone jammer
Current law repair phone still working on the main current leakage on the shortcut. We all know that the main version of the current leakage is often impossible to start with the feeling, because the leakage current is very small, usually resistive and capacitive components, caused by the small IC leakage, raise the main board voltage with a small current can very quickly find the leakage component.