Cell phone jammercan also be called breaker

The new phone, because the production process on the defect, failure occurred in the movement and case binding part of the mechanical stress near, and more for the components to bad welding, Weld caused. And drop, squeeze a damaged mobile phone failure in common, damage the cell phone can be observed on the chassis to the obvious mechanical damage in the corresponding part of the movement should focus on examination part. The importance of installing cell phone jammer in the prison will be stated in the next paragraph.Water supply caused by the failure of mobile phones the same point of water cell phone, such as timely processing (cleaning, drying), over time, sometimes only a few hours, it is oxidized up to serious dozen disconnected, integrated circuits and electronic components pin black, white, from the gray, then should be the right remedy, according to the water marks the site of the circuit board to find the point of failure, such as circuit boards by corrosion caused by circuit open circuit and short-circuit, component damage is more common. Overhaul, do not blindly do power experiments and disassemble, blowing welding components and circuit boards, it is easy to make the old fault did not rule out artificial fault, so the original can be a simple repair mobile phone, into a complex fault phone.

The first static dynamically after the so-called static state of the machine is not powered, first check is cut off the power supply case. Such as sockets, the reed is a good contact, with or without disconnection and bad welding machines, components or without burned black and color. "Dynamic" means to be repair the machine in the powered state, dynamic checks must be carried out after necessary inspection and measurement of the static and must not blind power, so as not to expand the fault. 5 before the power load power system is the whole energy supply center, load the vast majority of failures are often not smooth due to its power supply.Influence from the base station should be taken into the account when buildingcell phone jammershielding system. Therefore, check to find fault, you should first check the power supply circuit, make sure the power supply without exception, then the inspection of each functional circuit. If you do not network does not recognize the card and does not display the fault, a large part of the reason is due to the power supply is not normal result. 6. Simplest to most complex repair Practice has proved that a single cause or simple causes failure of the majority, caused by several reasons or complex causes of failure is much less.

For example, the repair mobile phone jammer network failure, we should first check ** access is good, the filter whether Weld ** power supply is normal for the simple reason, and not first consider the manifold block of the machine or on its periphery components for damage and other complex reason. Otherwise, the simple failure complicated, not only eliminates the fault will cause permanent damage to the motherboard. Phone circuit is more complex, trace very fine, integrated circuits, surface mount circuit for digital circuits and the relationship between rather complicated maintenance work to bring a certain degree of difficulty, should phone repaired, in addition to master its basic principles and means of maintenance, should also pay attention to its maintenance are reasonable steps to carry out maintenance work in an orderly manner.