Mobile dead

Problem : In this case, our cell phone suddenly died (auto power-off) without us know and we desire.

Repair procedure :

    * The first time we advance our battery test whether it was good. Remove the old battery, we test using multitester, when in fact the test battery is damaged, then replace it with a new battery, but if the battery is still good, attach it back to the old battery on the phone, then try to power the phone.


    * Check also than the battery connector, see if there is rust on the brass connector battery that can also be as a barrier (insulator) From the battery of the phone, also test the flexibility of the connector batry level by way of pressing his battery connector, if we think the level of flexibility is not normal or damaged, then we need to replace this battery connector. Because the battery connector that is not normal or damaged then the position of battery on the phone is unlocked and already changing when we carry phones. With the position of battery that is changing which causes an interruption of the connectivity of the flow from the battery to the phone that resulted in the phone turns itself off (auto power-off).


    * After our test battery and the connector no problem on both, then the next we try to refill (charge) battery on the phone, if the refill process indicator (charge) battery display on the phone screen but the phone still will not start, then for sure we find out the cause of the phone will not start earlier is because of interference from its IC PA.


    * Remove the IC PA on your phone, then try to restart your phone, your phone must be a flame, then there is the signal that your phone must be paired again the new IC PA.


    * But if when we refill (battery) on the phone and refill process indicator (charge) battery does not appear on the phone screen, also when the phone in turn on the phone did not want to flame, then we need to conduct further inspection and testing by using the power supply (PS). However, in certain cases there also may exist a tin a bad or poor soldering the legs of the PA IC on the PCB (connectivity of the PA IC on the PCB disturbed or interrupted). The solution we pull the PA IC on the PCB it first, then clean the tin-tin on the PCB where the IC is attached to the PA with IPA cleaning fluid, tin-tin trim back on the legs of IC PA, PA IC replace the old, turn on your phone , the phone must have a flame back.


    * Next we examine and test the phone by using power supply (PS), power supply to keep in mind that we will use to examine and test the phones must have ampere scale of I (one) ampere or 1000 (one thousand) milli ampere, it is intended that read the results of inspection and testing easier and a fairly clear because the sensitivity of the power supply (PS) itself.


    * Plug the cable from the power supply (PS) to the battery connector on our cell phones in the following order: black power supply cable to the negative pole battery connectors, cable green power supply to the pole BSI (Battery System Information) battery connector, yellow wire power supply to the pole connector battery temperature, and the red color of the power supply cable to the positive pole battery connectors. Please note that the link between your phone and power supply is required at least 3 cables.


    * Get used before the power supply is turned on, do not forget the first point voltage (volts) power supply at 0 V, it aims to prevent negligence we provide the voltage (volts) that is too big on mobile phones that only resulted in us getting worse damage.


    * After that then we should direct voltage (volts) in the power supply to 3.6 V, here because we used their phones for Nokia 3310 where the required voltage is 3.6 V, if you check your phone and the test was not Nokia 3310, then need to be adjusted voltage (volts) needed the phone, with a tolerance of only 0.5 V. more than tolerance that will lead to your cell phone damage.


    * When the phone is turned off (off), then press the 'on' on the phone to turn on the phone. Look at the needle amperes at power supply when the 'on' on the phone is pressed, if the needle does not move ampere silent means the problem lies in the hardware device. For hardware problems need to be carried out inspection and testing of the modules' on / off until the battery the phone itself.


    * Look at the needle amperes at power supply when the button 'on' on the phone is pressed, if the needle ampere increased by about ± 50 milli ampere mean the problem lies in the phone software. What we need to do is re-programmed the phone (flash) in accordance with the type and version of the current cell phone or we can do process of upgrading our phone software version to the version of software is higher than the previous version.

    * Turn on the phone, the phone must have a flame.