i try to jumper mic filter but one more print gone due to water
http://img245.imageshack.us/img245/4...micsolutio.jpg
Uploaded with ImageShack.us
please tell me is there any way to repair this phone?
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i try to jumper mic filter but one more print gone due to water
http://img245.imageshack.us/img245/4...micsolutio.jpg
Uploaded with ImageShack.us
please tell me is there any way to repair this phone?
Quote:
Originally Posted by HUM
try this jumper .......
thanks master..........
dear i need mic ic ic prints which are missing?
dear bro try the image.....Quote:
Originally Posted by HUM
and the damage points is for which purpose?
see the (red mark) image....Quote:
Originally Posted by HUM
R2102 is mic ic (EMIF03-SIM02F2)
C2 is biasing filter input ...
B2 is ground.....
A2 and A3 is blank...
B1 and B3 is clk input and output...
C1 and C3 is data input and output....
http://img833.imageshack.us/img833/9199/5610mic.jpg
this is an EMI filter....
Quote:
EMI / ESD FILTER IC’S
Electromagnetic interference (or EMI, also called radio frequency interference or RFI) is a disturbance that affects an electrical circuit due to either electromagnetic conduction or electromagnetic radiation emitted from an external source. [1] The disturbance may interrupt, obstruct, or otherwise degrade or limit the effective performance of the circuit. The source may be any object, artificial or natural, that carries rapidly changing electrical currents, such as an electrical circuit, the Sun or the Northern Lights.
EMI can be intentionally used for radio jamming, as in some forms of electronic warfare, or can occur unintentionally, as a result of spurious emissions for example through intermodulation products, and the like. It frequently affects the reception of AM radio in urban areas. It can also affect cell phone, FM radio and television reception, although to a lesser extent.
Electrostatic discharge (ESD) is the sudden and momentary electric current that flows between two objects at different electrical potentials caused by direct contact or induced by an electrostatic field. [1] The term is usually used in the electronics and other industries to describe momentary unwanted currents that may cause damage to electronic equipment.
ESD is a serious issue in solid state electronics, such as integrated circuits. Integrated circuits are made from semiconductor materials such as silicon and insulating materials such as silicon dioxide. Either of these materials can suffer permanent damage when subjected to high voltages, as a result there are now a number of antistatic devices that help prevent static build up. (quote in wikipidia)
this tiny chips were most commonly damaged in terms of...
a. display problems
b. keypad problems
c. microphone / audio problem
d. sim-card problem
e. memory card problem
thnx sir so how o jumper these missing points?
no need make jumper. the missing points are blank A3 and A2....Quote:
Originally Posted by HUM
so you are very lucky....see the image again(sorry for little miss edit the image before).
i think your problem solved...post result..good luck...