It is possible to adjust the cover range of each antenna of cell phone jammer

Cell phoneservice. Individual keys out: Because the use of coordinate-style keys, individual keys out of the main key surface contamination or individual conductive powder drop, so that the button two contacts on the high and low can not turn, lead to no instruction into the CPU. Clean or replace key button conductive film can be. Example: Nokia 8210, repaired radio failure, the installed capacity of 3,7 bond failures found, the player with a cotton swab dipped in alcohol to 3,7 keys rosin wash, installed OK. Example: Ericsson T18 "yes" key to failure, the player that "yes" key conductive film of the conductive powder is polished, the replacement of conductive film after the OK. Tip: soaking machine, wet machine, the use of longer years of this failure-prone. High voltage test of the adapter of  cell phone blocker should be implemented through test with the dielectric strength tester.
All key failure: CPU can not accept two key commands, so long as there is a button in the conduction state, the other buttons no longer work. Processing: cleaning key; on the side buttons are easy to press the button to check the adjustment of death. In addition, as Amoisonic A8 cell phone, keys have high end of the varistor in parallel, such as deterioration of the individual varistor failure will cause all the keys. Example: One station by the Ericsson T66 mobile phone, all access key to failure, can not even shut off also, disassemble examination revealed, "C" key on the conductive film pink dropped keys, so that "C" key "by death", cotton with alcohol cleaned OK. Example: Amoisonic A8 a mobile phone, all key failure, pressure-sensitive resistor to ground resistance and found that V704 abnormal, removal of V704 troubleshooting. This kind of  cell phone jammer is applicable to the flammable and explosive occasions.
Tip: type of failure-prone models in the conductive film. Replacement housing is more attention to the side buttons the top die. Also failed to correctly distinguish between crashes and keys out of failure, in general, can play into the key failure (pass but can not access) phone, but then fight their way into crash failures telephone. Row or column key failure: failure of the row or column between the CPU can not communicate properly. Check the failure of the rows or columns to connect the CPU. Plus welding CPU (CPU can not be a glue). Example: TCL8388 One Taiwan, 7,8,9 failure, the player front panel plus welding the connector to the motherboard after the OK. Example: One station 3,6,9 Samsung N188 malfunction, cleaning inline interfaces, troubleshooting. The cell cell phonecan recover the normal use after leaving the blocking range of cell phone jammer .  Tip: Many use inline block or cable to connect the front panel of the cell phoneprone to this failure. The second measure: Dual Ray used to ear - cures handset fault. Judge: pull, "112" Measuring whether the handset contacts the voltage jump. ① a trip voltage: fault or poor contact in the handset, the handset can be clean and adjust the contacts, replace the handset. ② one end of the transition voltage, the voltage transition without end: mostly disconnection between the handset and audio IC. 3, no trip voltage at both ends: mostly audio IC soldered or damaged. 4, there is noise in the handset, mostly on the line by the words of a small filter capacitor deterioration caused by a capacitor in the receiver to improve the polarization. In addition, the handset is damaged, transmitter failure can also cause noise receiver, audio receiver IC failure can cause noise. It is possible to adjust the cover range of each antenna of cell phone jammer .
Example: One station Ericsson T28, fell silent after the handset, the player, a good test handset, welding plus audio IC, troubleshooting. Example: Siemens 3508 handset silent, measuring handset sound in the audio side of the C11, C13 flying on both ends of two wires connected C350, installed after the OK. Example: V998 handset one, handset with noise, the customer is induced to a child playing, children suspected of saliva into the transmitter, replace the transmitter after the troubleshooting. Tip: Many cell cell phonein the audio power IC in the collection. On one end of the trip voltage at one end without transition voltage, the voltage can be no transition at one end grounded. The portable  cell phone jammer can be easily concealed in the pocket or purse.