Nokia 6210 Navigator phone heat , 2700c ,5130 hang white screen

There are really and practically  tested solution for mobile phone damages not only that but also no side effect to your mobile phone after the doing this solution. If these solution are useful for you dont forget to comment here.

1. Nokia 6210 navigator Phone heat

• Firstly you want to check your phone with power supply. Connect phone to power supply and switch on. At this time phone is not heating you can change your battery. Because of damage your battery( memory effect) your phone may be heat. But when you connect phone to power supply and it heat again.

• Now you can format or reset settings. you can use this codes for formating your phone. Default password is 12345

*#7370#

*#7780#

If your faults in same condition

• Disassemble your phone very safely and clean PCB and other components properly.( specially you must use only proper tools for disassembeling and cleaning ,otherwise your phone will be dead). Please watch following video for understanding how you can disassemble your Nokia 6210 Navigator phone safly.

• If your faults in same condition. Then you can check PCB Components( short circuit or open circuit) using analog or digital multimeter. If you can find short circuit then you can replace that components.But dont try to remove any IC yet. Faults in same condition.

• Please remove the this IC ( Radio Fm discrete IC) . your problem will be solved 100%.

Special: If an only if your nokia 6210 heat when connect charger or handset then you want check system connector (chargrt pin) and charging line on your phone board Before removing IC..

For more Details about Nokia 6210 Navigator download Schematic diagram and service manual

• Nokia 6210 Navigator Schematic

• Nokia 6210 Service Manual

2.Vodafone 225 keypad stuck , keypad not work , phone stuck

• Firstly you can check your vodafone keypad embrane (Domestic). Because when damage or oxidation your phone keypad domestic above faults can be occurred. There fore clean domestic and check your phone. If you can see same faults again

• You can remove  Charging pin and replace a new one.

• If you can see again that faults after the removing charging pin then you can flash your vodafone.  Finally if you can see again unfortunately that faults can be come with CPU.  Try to CPU other wise you will be able to replace a new CPU.

3. Nokia 2700 c , 5130c 2730 Nokia logo then white screen or when  power on white screen hang done.

• Change the battery or try to switch on using power supply. if problem is not solved

• flash your phone correctly. (If  your phone has a short, remove that short). After the flashing (some times when you try to flash you will be unable to do it because of errors. then try to do next step) check again. If fault is same as previous

• Then Remove Camera and try to switch on. Majority at that time your problem will be solved. But if the problem is same

• Heat very carefully Rap IC.Because Majority this fault is occured because of damage Rap IC.

If you unable to solve your problem yet finally you have to remove Rap IC and Replace a new one. Remember that Rap IC is a Micro BGA therefore you want get a good experience for removing and replacing a like that IC.

Specially when you disassembeling your phone must use proper tools for doing it.Never try to remove main ICs without not a good understanding about that ICs and faults. This solutions will  help to solving above faults correctly.

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Every time try to learn and understand every sides about mobile phone faults and finally you will be a clever technician. This is our warm wish for it GOOD LUCK.

Mobile Phone Hardware Repairing ( about faults comes with IC )

We can divide all Mobile phone damages  as Hardware , Software and Settings faults. when we think about hardware damages or faults mainly we want to know what are the main ICs and faults comes with IC. Old phones had ICs more than latest phones. However when you get complete idea about that ICs then you will be able to find solution for damages in your phone properly.Check following list of ICs and try to understand about that faults.

• Power Amp
• Antenna Switch
• RF Processor (hagar IC)
• Power IC
• CPU
• Charging IC
• Flash IC ( ROM orEEPROM)
• Oscillator (VCO)
• Sim IC
• Key Pad IC
• LCD Light control IC

Power Amp

This is a very important IC for Transmiting signal(Tx) in your phone. This IC is work as a Tx amplifier and it get high voltage directly from the battery.When it is damage we can see following faults.

• Signal Drop
• No Network or Access
• Battery low quickly
• Cant make a call ( Tx not work properly )
• Power on failure
• Phone will heat
 

Antenna Switch

Antenna switch is help to filtering frequency Bands as 900Mhz , 1800Mhz and connect Rx ,Tx( Receiver and Transmitter). Therefore when damage this IC we  can see faults as following.

• Signal Drop
• No Network found
• Some Frequency band are not worked properly

RF Processor ( Hagar IC)

RF( Radio Frequency ) Processor is a main IC in your phone PCB. This IC is used for processing  Rx and Tx signal ( for Modulating and Demodulating). sometimes it make a low frequency clock signal is used to start CPU functions. Therefore when damage this IC we can see faults as following.

• Power on failure
• Signal drop
• No network
• Caller drop
• Rx or Tx or both are not work properly
• Battery empty quickly and phone will heat

Power IC

Power IC distribute current to all the components and IC in PCB. we can think that, it is work as voltage regulator therefore if it is worked not properly phone will not be power on. specially we can see some times some applications are not worked because of Power IC is damage.(when power ic not distribute current for circuits that circuits are not worked).

• Power on failure
• Battery empty quickly
• Phone will heat
• Insert Sim
• No Charging
• Some applications are not worked properly
• Auto Restart

CPU (Central Process Unit)
Central Process Unit is the brain in your mobile phone and controller all commands which we have given. Specially this IC check flash IC before booting mobile phone after that it will give command to Power IC. When it damages we can see following faults.
 

 
• Power on failure
• Auto Restart
• Commant not accepted
• KeyPad not working
• Battery empty
• Phone will be heat
• Phone will stuck

Charging IC

This IC is not a common IC  among latest phone. However it is used for controlling charging.when it is damage we can see charging faults like these No charging , Not Charging , Auto charging or Charger not support( Bad contact charger). Nowadays Power IC ( UEM) working as a charging controll IC.

Flas IC ( ROM or EEPROM)

This IC  holds flash or booting  information(program). When this IC damage we can see software problems in your phone as follwoings.

• Power on failure
• Booting faults.( only booting screen)
• Phone will stuck
• Battery empty quickly
• Some applications are not worked( camera ,Mp3,Video Bluetooth ...etc )
• Phone work as a unconditional

VCO(Voltage Controll Oscillator)

VCO is the RF signal generator. It makes clock frequency  which is used to run digital components. When this IC is damaged digital components fail to work and the result is power on failure.

• Power on failure
• Signal faults

 

SIM IC

This IC is used for controlling SIM card data. when it is damage you can see following faults. This is a crystal IC because of that when fallen down your phon like this IC will be damage easily. Therefore we can say following faults are common faults in nowadays.

 

 

• Insert Sim
• unablet to power on with sim card
• Sim not accepted.

Key Pad IC

This IC is used for Controlling Key pad circuit.We can see this IC as crystal and normal type.because of that when fallen down your phon like this IC will be damage easily. Therefore we can say following faults are common faults in nowadays.

• Key pad not work as a order
• Key pad stuck
• When power on one key is dialing continuously
• When press a key phone will shut down or restart
• Key pad work as a unconditional

LCD Light controll IC

This IC is used for controlling keypad and LCD lights. We can see this IC as crystal and normal type. when this is damaged we can see following faults.

• Key pad lights not work
• LCD lights not work
• White Display
• Display not work

When you see like above damages dont try to do remove that ICs. Because there have a method for solving any faults in mobile phone. Therefore firstly try to understand about mobile phone ICs and about its works and also damages.

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 This notes is a great chance for understanding about mobile phone damages and how its come. However try to be a clever technician this is our warm wish for it. GOOD LUCK

Introduction about Mobile Phone IC's( Integrated Circuits )

Integrated Circuits

There are Complete notes about Main IC's  in mobile phones and How can you identify its. Not only that but also you can get a real idea about mobile phone damages or faults which are comes with IC. Specially there are three main type IC s in mobile phone. These are

1. Pin IC
2. Path IC
3. MBGA ( Micro Ball Grid Array ) 

• Pin IC

Integrated Circuits are complex circuits which have been etched onto tiny chips of semiconductor. When we think about Pin IC, The chip is packaged in a plastic holder with pins  which will fit the holes on stripboard and breadboards. Very fine wires inside the package link the chip to the pins.

How Can we numbering the Pins in IC

These pins are which is in Pin IC have been numbered for finding more 100% correctly details about its circuitit. Number 1 is which we can see when we checking anti-clockwise around the IC (chip) starting near the notch or dot.

You can mount and unmount or replace these IC s using SMD rework station. However when you replace like this IC you must mount all pin to the PCB and do not short circuit.Specially Latest mobile phones have not like this IC s. But when you training to mount and unmount these Ic s then you will be able to replace chinease phone display , Switches ... etc.

• Path IC

When you check your mobile phone PCB , you will be unable to find these ICs quickly .But when you unmount these ICs you can easily identify thats. following images will be helpfull for undersanding about its  ecternal appearance.

Majority ,Power Amp and Antenna Switch are come as this type of IC.However you can mount and unmount easily using SMD Rework station. But unfortunately we can see only two or three ICs on common mobile phones.

MBGA( Micro Ball Grud Array)

The BGA is descended from the pin grid array (PGA), which is a package with one face covered (or partly covered) with pins in a grid pattern. These pins conduct electrical signals from the integrated circuit to the printed circuit board (PCB) on which it is placed. In a BGA, the pins are replaced by balls of solder stuck to the bottom of the package.

These solder spheres can be placed manually or with automated equipment. The solder spheres are held in place with a tacky flux until soldering occurs.The device is placed on a PCB with copper pads in a pattern that matches the solder balls. The assembly is then heated, either in a reflow oven or by an infrared heater, causing the solder balls to melt. Surface tension causes the molten solder to hold the package in alignment with the circuit board, at the correct separation distance, while the solder cools and solidifies.(wikipedia)

You can use Infared , Laser or manual SMD rework station for removing or mounting for BGA. When you have remove BGA IC firstly you want Clean PCB surface and Reballing IC and pcb surface.

After Reballing you can see IC and PCB as following

 Finally you can mount new or reballed IC using Laser, Infared or manual SMD Rework stations.

 Specially Before you Remove your BGA IC firstly try to solve damage soldering or heating. then you can remove that damage IC  and try to replace new one. When you replace that IC some times your phone will be short circuit , if it is short circuit never try to Switch on and try to Soldering otherwise replace again it. However you want get a good experience for doing that therefore you can practice with dead or damage phones. 

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This note will help you to understand about Main IC type in mobile phones and about its important. Whatever Try to be a Good Technician. Good Luck 2 U.

Mobile Phone Common damages comes with Battery

When Damage Mobile phone Battery you will be able to see lot of faults in your phone. Then you must change your Battery for solve that faults but if you cant identify about that faults which are comes with Battery definitely you will try to repairing your phone using other methods. Because of that sometimes your phone will be dead.Therfore you must know about that faults and how can you solve its. Carefully read following notes step by step and identify about all damages which are comes with Battery.

What is Memory Effect

Memory Effect is that if battery is repeatedly only partially discharged before recharging , battery forgets that it has the capacity (cells) to furhter discharge all the way down. If you fully charge your mobile phone battery and then use only 75% of its capacity before the next recharge , eventually the battery will become unaware of its extra % capacity which has remained unused.

The battery will remain functional , but only at25% of its original capacity. When you do same thing step by step remain functional which is in your battery will not be worked and that cells will be dead.After that we can say that battery has been memory effected.

 What are the faults comes with Memory Effect

• Power On failure
• No Charging
• Signal Drop
• When you power on with sim card, Power off other wise ok
• When signal come phone will power off
• When make a call Battery empty or powe off
• Battery life time will be reduced
• Battery will charge quickly
• Battery will heat
• Insert sim card problem
• unable to run some applilcation in your phone
• Software problems

Etc...........

Reason and solution for above faults (if its are Battery faults)
Power On failure:
When Battery Voltage less than 3.7V Phone will be power on failure. You must Recharge your Battery or replace a new battery. If you can connect your phone to power supply machine then you will be identify this faults easily.

No Charging :
When your Battery Voltage less than 1.9V( or some thimes it can be2.4V ). You must boost your battery or high charge( do it correctly like this , give 10 pulse for battery conectors using 6V. Warning. used correct voltage and 30 seconds for each pulse otherwise it will be damaged).

Warning : Specially this damage is come with Hardware parts. firstly you can connnect to power supply and identify reason for that fault.




Signal Drop :
Generally Signal circuits want high voltage( around 4V ) for doing its job properly. But if your phone Battery is damaged or memory effect that circuits cant get this voltage continuously because of that you can see signal drop in your phone.
When you replace a good battery for old one this faults will be solved.
Warning : Specially this damage is come with Hardware parts. firstly you can connnect to power supply and identify reason for that fault.




When you power on with sim card, Power off otherwise ok
When signal come phone will power off
When you Power on with sim card Signal circuit will worked and its want good voltage source. If your Battery is memory effect , it will be unable to give power for signal circuit and Power ic. Therefore Phone will be shut down. when you replace new battery for your phone it will be ok. Warning : Specially this damage is come with Hardware parts. firstly you can connnect to power supply and identify reason for that fault.

When make a call Battery empty or powe off
When make a call Signal circuit and RF units are working with full capacity and also that circuits want high volatge for working. If your mobile phone battery is memory effect it will be unable to supply that voltage Because of that your phone will be shut down.
when you replace a good battery for old one that fault will be solved.
Warning : Specially this damage is come with Hardware parts. firstly you can connnect to power supply and identify reason for that fault.

Battery life time will be reduced
Battery will charge quickly
Battery will be heat
Because of memory effect your mobile phone battery have damage cells therefore it hasnt full capacity so when you plug in charger it will be battery full quickly. Not only that but also it will be heat and life time will be reduced.

When you change Battery you can solve that faults easily. Warning : Specially this damage is come with Hardware parts. firstly you can connnect to power supply and identify reason for these faults.

Insert sim card problem
Minority you can see insert sim because of BSI terminal not connect with PCB Battery pin. If your battery is a exploit one or damage one you must change it. But specially , Majority this fault is come with hardware damage.  


unable to run some applilcation in your phone
Software problems

When you run any application in your phone it will take high voltage more than stand by time. If your battery is memory effect , it will be unable to supply that voltage therefore you will be unable to run that software or application in your phone.

Please change the battery and try to do it again , if it is come with battery definitely it will be worked properly.

Warning : Specially this damage is come with Software faults. firstly you can connnect to power supply and identify reason for





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This note help to understanding about memory effect and what are ther faults comes with battery.Notonly that but also you can identify how you can solve that faults correctly. Try to Be a good technician.

Type of Mobile Phone Batteries and about its works, damages and safety

There are complete notes about Mobile Phone Battery and Memory Effect.Because of memory effect your mobile phone will be damage as various type.There are all damages which you have seen because of damage your phone battery.

Mobile phone battery is a Rechargeable (cells) battery which has long life time and good efficiency. we can see these batteries as four types. they are NiCd, NiMH, Li-Ion, Li-Polymer.

Kinds of mobile phone battery.

• NiCd
• NiMH
• Li-Ion
• Li-Polymer

NiCd and NiMH  Battery

These Batteries are used in old version mobile phones. Nowadays we cant see these batteries in latest mobile phones but these batteries are used for Laptoop or CDMA phones or some electronic machines. .However before few years these batteries were the most popular and cheapest Rechargable battery in the mobile phone industry.

Li-Ion or Li-Polymer

These Batteries are used in latest phones and electronics machines and also it have long life time and efficiency.When we think about mobile phone faults, some faults are comes with battery. Then we want to identify what are the faults comes with battery and how can we solve it. fistly we want to know about battery pin out and types of pin out

.

• GND : Ground or negative Terminal
• BAT : Battery Positive Terminal
• BSI : Battery Site Indicator
• BTemp : Battery Temparature.

GND or Negative Terminal

Ground or negative terminal is a refference point for measuring other voltage or returning point for electric current and alos it is same to negative battery terminal.

BAT +

VBat or Positive terminal is also known as Battery Positive terminal , BAT+ or +.

BSI

BSI is also known as Battery status Indicator or Battery System Indicator.There are some mobile phones, which has shorter BSI pin. It is because when the battery is being removed when the phone is turned on, the BSI circuit interrupts first, which tells the processor to shut down all communication to prevent damage.

The battery block contains BSI resistor for battery identification. The BSI fixed resistor value indicates the chemistry and default capacity of a battery. Temperature and capacity information is needed for charge control (charging current and the voltage).

It is connected to resistor to GND. The phone measures the resistance of the BSI - GND connectors, and it can determine which kind of battery is in the phone.

Examples: Nokia NiMH batteries:

• BMC-2 640mAH 3.3 kOhm
• BMC-3 900mAH 5.6 kOhm

Nokia Li-Ion batteries:

• LB-2 650 mAH 68 kOhm
• BLC-2 900 mAH 75 kOhm

Battery Temperature

B Temp is also known as Battery Temperature or NTC. The battery block contains NTC (and usually BSI) resistors for temperature measurement. Temperature and capacity information is needed for charge control. These resistors are connected to BSI and BTEMP pins of the battery connector.

The phone stops the charging, if the battery is starting to overheating.

In case of NTC thermistor, if the temperature increasing, the resistance decreasing. The temperature of the battery make the resistance beetween the GND and the BTemp change.

There are batteries which don't have BTemp connector. In this case, the phone has the temperature meter which is in the mobile phone, close to the battery.(via wikipedia)

How Mobile Phone Batteries are damage

• Because of Charging, using high voltage or bad chargers
• Droping the Batteries   often
• Water Damage
• Pluging charger before Battery Low
• Plug out charger before Battery Full
• Keep in magnatic field area
• Because of phones Short ciricuit
• Make a call during charging time
• Because of high temperature

How keep your mobile phone battery in safe

• Avoid dropping the cell phone often. They can cause a very heavy damage to the Battery.
• Do not use High charger or bad charger
• Charger plug in after Battery low
• Charger plug out after Battery full
• Keep away the phone or the Battery from anything hot.
• Don’t put the phone or the Battery in water.
• Do not apply too much of pressure on the Battery
• Never attach or solder anything to the Battery.
• Do not put Battery near the magnatic fields.

These note will be help for preventing damages which are comes with mobile phone Battery and also please check next page for Memory Effect and What are the damages of its and how can you prevent it.Try to be a clever technician.

Easy Methods For Mobiile Phone Repairing

Mobile Phone Repairing Easy Method Without Disassemble Your phone.

There are common faults in mobile phone which can solve with formating it. But when you are going to format your phone, you must know some necessary  points about your damage phone.Therefore this page will help you to understand about that all necessary points in mobile phone. Specially as this way you don't want to disassemble your phone. Firstly you must Format your phone for All folowing faults.

• If Phone is Suddenly stuck or slow
• Battery empty
• Call drop
• Some Applications not works
• Not Charging
• Signal drop
• Call Divert
• When make a call phone will shutdown
• Auto Charging
• Car mode ( Handfree mark in display )
• Auto Restart or Off
• Some commands are not worked or worked as a crazy

Etc.....

[ If you can format or Reset your phone before disassembeling it will be useful for your repairing ]

How You can format your phone?

Before you format your phone you must think about your phone memory Because it can be Deleted.

If Your Phone have a touch pad , check it is worked as a new one. Because you have to calibrate it  after restart (when your format your phone will restart) your phone. However Touch pad is not worked properly dont try to format your phone.

Sony Ericsson

Settings

 :

General

 :

Master Reset

 :

Reset Settings  (PW)

Reset All (PW)

When you come to Reset settings or Reset All position you have to give the Password.
 Default password is 0000   
 Reset settings mean only change settings will not delete memory in your phone.
 Reset All mean change settings and will delete every thinges in your phone memory.


LG

Settings

:

Reset Settings

Default Password for LG phones are 0000 , 1234, 1111.


Samsung

Settings

:

Reset Settings

Default Password for Samsung Phones 000000, 00000000, 0000, 1234

Samsung Hard Reset code : Type this code on the display  *2767*3855#


Motorola

Settings

:

Reset Settings'

:

All Settings

Default password for Motorola 0000000 , 000000, 0000, 1234

China Phones

Settings

:

Restore Factory Settings

Default Password for Chinease Phones 0000, 1234, 12345, 1122, 3344, 5678, 1112, 000000. etc


Original Nokia Phones

Settings

:

Restore Factory Settings

• Default Password for Nokia Phones 12345
• Special Code for nokia 6600 , N95 ( firstly off your phone and then press * button , number 3 button, Call Answer button and On/Off  switch together. then you can see on your phone and as Formating on your mobile phone display)
• Type following codes on your main display and then give the default password for formating your phone,

                              *#7780#  Then give the default password for Reset your phone settings

                               *#7370#  Then give the default password for full Reset your Phone settings



Other Special Codes for Mobile phone

*#06#  For Checking All GSM Phone IMEI
##21#  For Cancel All Divert( for any brand mobile phones)
*#92702689#  For Checking Life time in Nokia Phones
*#0000#   For Checking About phone model and software version in Nokia Phones
*>*<<*<*   For Checking options and software information life time in SonyEricsson Phones.

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When you goint to repairing mobile phone firstly you can format it. Then try to disassemble and repiring with hardware parts. Try to Be a clever Tchnician and Good Luck to you.

Kinds of Faults in Mobile Phones

There are Main Kinds of Faults in Mobile Phone which we can see generally.

Mobile phone is an Electronic Device and also it has been included a Software. Because of that this electronic device have lot of electronic parts ( IC, Capacitor, Resistor, Diode, Coil , Relay, Transistor,... etc) and settings for main software not only that but also  these electronic parts  or Software Settings can be damaged or changed.
Therefore your mobile phone may be damaged. A typical mobile phone has two main kinds of faults as Hardware and Software faults. But some software faults are comes with settings so we can divide that faults as following main parts. 

•  Hardware:  When Damage any Hardware parts ( Electronic parts or PCB )
•  Software:    When Damage Software which is in mobile phone.
•  Settings  :    When change mobile phone settings as unconditional

Hardware Faults 

These faults are related to PCB , Batteries and any other electronics parts fault. There are example for understanding about what are the hardware faults.

• No Signal
• Battery Empty
• Dead set condition
• Auto Restart
• No Charging
• No Display or Display lights
• keypad faults
• Display other problems
• Insert Sim Card
• Low signal
• No Network Access
• Call Drop
• Phone off when make a call
• Voice fautls
• Ringer fautls
• Earpiece faults
• Mic faults
• Auto turn off
• Vibrator faults
............ Etc..

Software Faults

These faults are related to Software which is in mobile phone.Every mobile phone has a OS. When it is damaged you must flash or format your phone. There are example for understanding what are the software faults.

• Dead set
• Not Charging
• Test Mode
• Contact Service
• No Signal
• Auto Restart
• Some Applications not work
• When you send SMS or MMS phone will restart
• Camera Not work
• Booting Problems
• Sim not valid or Insert correct sim

 .............Etc..

 Setting Faults

These faults are related with mobile phone settings. If you changed your phone settings as unconditional  and also virus can change that settings as harmfull then following faults can be seen in your mobile phone.

• Call Divert
• No network
• Only incoming call
• Auto Restart
• Battery empty
• Stuck your phone
• Phone is slow
• When make a call phone will restart or off
• Sim Lock
• Unable to send SMS
• Some Application not work properly
• Security Code problems
• Black list problems

..............Etc..

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 When you try to repair damage phone firstly you want to know what is the damage and how can repair it. when you read this blog you can identify mobile phone faults and how you can solve it. This is the first step for it " Understanding What are the kinds of Faults in Mobile Phones.

Try to be a good Mobile phone reapiring technician. Good Luck to you.