Kamis, 12 November 2009
Solution if Your Phone No Signal
When we insert the SIM card and turned on the phone, then there is no signal or a network that appears on the LCD device.
Repair procedures:
check the first component of the antenna and antenna connector, ensure that well connected. Especially if your phone is a phone with internal antenna, associated with the mainboard PCB or through the contact of two elastic pointer, if the pointer is in contact contact the ugly, the problem that arises is the lack of a network (no network) and a bad signal reception signals even lost (no signal).
Especially with the engine knock or fall into the water, bad contacts and oxidation will occur at the contact pointer. Antenna switch is the only way to rnenerima and send a signal, if damaged or soldering pins is faulty, would appear the problem is not the network or transmission.
Next we tried to find the network on the phone with the manual method, if the method fails in this manual network search, so we can be sure there is a problem in RF IC (HAGAR), change the RF IC (HAGAR) was then the problem will be over.
Networking can be searched by manual method sometimes fails, can not even connect to the network as well. This phenomenon is caused by problems RF IC (HAGAR), AUDIO IC (COBBA). If the module COBBA appeared an error, most likely was caused by his BGA soldering and units around the poor, or lack of flow, whereas most of the problems HAGAR-unit due to a bad unit.
If looking for a network with the manual method on our mobile phones have only 1 (one) operator / mobile service providers only, then there is a problem with the IC VCO, replace the VCO IC was the problem to be completed.
After the testing and repairs done on our hardware but still no signal / missing, then we went to the software. We flash your phone in accordance with the type of mobile phone and mobile phone software version or the version before the newer software (upgrade)
check the first component of the antenna and antenna connector, ensure that well connected. Especially if your phone is a phone with internal antenna, associated with the mainboard PCB or through the contact of two elastic pointer, if the pointer is in contact contact the ugly, the problem that arises is the lack of a network (no network) and a bad signal reception signals even lost (no signal).
Especially with the engine knock or fall into the water, bad contacts and oxidation will occur at the contact pointer. Antenna switch is the only way to rnenerima and send a signal, if damaged or soldering pins is faulty, would appear the problem is not the network or transmission.
Next we tried to find the network on the phone with the manual method, if the method fails in this manual network search, so we can be sure there is a problem in RF IC (HAGAR), change the RF IC (HAGAR) was then the problem will be over.
Networking can be searched by manual method sometimes fails, can not even connect to the network as well. This phenomenon is caused by problems RF IC (HAGAR), AUDIO IC (COBBA). If the module COBBA appeared an error, most likely was caused by his BGA soldering and units around the poor, or lack of flow, whereas most of the problems HAGAR-unit due to a bad unit.
If looking for a network with the manual method on our mobile phones have only 1 (one) operator / mobile service providers only, then there is a problem with the IC VCO, replace the VCO IC was the problem to be completed.
After the testing and repairs done on our hardware but still no signal / missing, then we went to the software. We flash your phone in accordance with the type of mobile phone and mobile phone software version or the version before the newer software (upgrade)
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