Nokia N8 camera problem

Fault description:

Nokia n8 is latest mobile but some time mobile camera starts stop working. So we can’t capture image and record video. When we open camera it will shows camera failure or hardware failure restart camera message.  This problem appears due to sometime software reason or some time hardware problem. So here we consider both methods one by one.

Fault solution:

For this problem solution we have to use following methods:

1.       First we apply software methods

2.       Open camera and press option an open camera setting then press restores camera setting then mobile camera setting will restore to its factory condition then check camera. 

3.       If no luck then open mobile and first we should change camera switch and check for solution.

4.       After changing camera switch check line from all camera point to camera resistance as following  image:

5.       First connect point 1 and 2 as shown in image and then apply jumper from first point to camera resistance as shown with blue mark.

6.        Then connect point 3 and 4 together and apply jumper from point 3 to other resistance as shown in image with red mark.

7.       Finally connect point 5 and 6 and make them ground as shown with black mark in image.

8.       After these entire three jumpers camera will work defiantly.

  

Conclusion:

First we should check all basic settings because if we apply jumper first without setting testing then this may result in wrong output.

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Nokia C1 display light problem

Fault description:

Nokia model C1 sometime had a strange problem that we can’t see display back light on LCD. This problem occurs due to problem in LCD or sometime in LCD IC and track missing from display transistor to LCD connector. 

Fault solution:

For quick solution of this problem we have to use following methods:

1.       First try to restore mobile factory setting using code *#7780# then mobile will

Restore in its factory value because sometime due to some setting mismatch we got this error.

2.       Secondly we have to use hardware methods so use next step.

3.       Open mobile and apply new lcd to mobile and check for solution 

4.       If no solution then we have to use jumper from lcd track first to a point on back side of pcb because that first connector receive current from that point and due to some internal crack in track print line miss there so apply following jumper there.  

                                                                 This is LCD connector side

And this is PCB back side

These methods will solve our problem and we will get our solution.

Conclusion:

During jumper setting process we should take care that jumper wire should not touch any component or not grounded.

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BlackBerry 9300 display problem

Fault description:

Blackberry 9300 sometime had a strange problem that we can’t see display light on LCD. This problem occurs due to problem in LCD or sometime in LCD IC and track missing from display transistor to LCD connector. 

Fault solution:

For this problem we have to use hardware methods for quick solution. So apply these steps one by one:

1.       First change new lcd an then check light

2.       If no solution then we have to use hardware technique as step 3

3.       Open mobile PCB and check line continuity from LCD connector second point to display transistor IC as shown with yellow line in image below. If line missing there then apply jumper shown below:

4.       After this check line from first point of LCD connector to resistance as shown in image with red line and if line missing there then apply jumper as shown in image in red line. 

After applying both jumpers we will see proper display light on LCD without any problem.

  

Conclusion:

During new LCD change process we should use new and original LCD because local LCD can cause bad result in light.

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BlackBerry bold 9000 volume key problem

Fault description:

Blackberry bold 9000 sometime had a strange problem that both side volume key don’t work. So due to this we can’t increase or decrease sound in music and during call. This problem occurs due to problem in side switch or sometime in keypad resistance.

Fault solution:

For quick and proper solution for this error we have to follow all these steps carefully:

1.       First we should change both side volume key and check for solution

2.       After that check that weather appropriate voltage are appearing on volume key point. If voltage missing there then go to step 3

3.       Now we have to check line continuity from volume key point to some resistance point as shown in image below:

4.       First we should test that first point of volume key should be grounded as shown with black mark

5.       Then check second point continuity to key resistance as shown with sky blue mark in above image

6.       Check third point line continuity to a metal type point as shown with green mark

7.       Finally check last and fourth point line track to other resistance as shown in image with red line.

So if during any of these line track testing we found line missing then apply jumper there carefully our problem will solved.

  

Conclusion:

During these jumpers setting we should care that all jumper should be placed separately and they should not have any connection or touching otherwise we will get internally shorting in circuit board.

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Samsung S5230 charging indication doesn't show

Fault description:

Samsung S5230 mobile some time shows not charging indication on screen every time. Due to this we can’t charge mobile and battery just drains after few hours. This problem mainly occurs due to shorting in charging filter.

Fault solution:

For quick solution of this problem we have to use following solution:-

1.       In some cases due to batteries internally circuitry problem creates this situation that mobile shows auto charging so first we should change battery and check result.

2.       After this try to change charging connector

3.       After replacing new charging connector  check track line continuity from charging pin 1,2 to desired point as shown in image below and from 19,20 to ground 

4.       If on any point line missing then apply jumper from pin’s point to pcb point as shown image below:

Conclusion:

Samsung s5230 mobile have 20 point charging connector so during jumpering process we should short point 1and 2, 19 and 20 for proper result.

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BlackBerry Pearl 3G9100: troubleshooting charging and usb error

Fault description:

BlackBerry mobile sometimes has a charging and usb connector problem. So we can't charge the mobile and also can't connect the usb to the PC due to this error. We had this problem due to a damaged charging connector or sometimes due to charging the IC.

Fault solution:

For a quick solution for this problem we have to follow all of these steps carefully:

1. First open the mobile and clean the charging connector. This process is very minor, but essential because the connector is very sensitive. It might not seem like a big thing, but the charging connector should always be clean. A few particles of dirt can make the difference between whether it serves its purpose or fails to work.

2. Then change the charging socket.

3. If the problem still remains then check all track continuity from the charging pin point to the appropriate transistor and on the IC point as shown in the image below.

4. According to the image first check the point 1 shown in green. The point should be ground.

5. Point 2 in the green mark should be blank with no connectivity.

6. Point 3 with the red point should be connected to charging IC leg number 2 using the red jumper line.

7. Point 4 with the sky blue mark should be connected to IC leg number 1 with the jumper and this point should be connected to the other charging transistor also shown in the image.

8. Last and final point 5 shown with the pink mark should connect to the other charging transistor below the charging pin.

After all of this is done, the jumper setting, mobile charging and making the usb connection the problem will definitely be solved.  

Conclusion:

During the jumping process we should especially take care of all the nearest components of the circuit board and make sure that they do not become damaged. This is essential because any type of shorting in any component may cause another serious problem. The whole system relies upon the circuit board and if it goes down, then nothing is going to work.

The circuit board is a delicate thing; basically it is the heart of the mobile and any disruption whatsoever can throw it off. Also it is easy to break and difficult to repair. That is why you must be extremely careful when doing anything to it or near it. If something happens to the circuit board, you will have to purchase another mobile.

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Motorola v9 mobile hardware flawed charger error

Fault description:

Motorola v9 mobile some time shows fake charging or shows charger error or invalid battery

This problem seems to be a hardware fault. In such case mobile battery can’t be charge with charger.

Fault solution:

 So for solving this problem we have to use following hardware tricks.

1.       Try to change battery and charger

2.       If no solution then open mobile pcb and use next step

3.       Try to change charging pin connector as shown in image below

4.       After that if problem still appears then remove a six leg charging IC as shown in image below.

5.       After removing IC apply jumper from charging pin point to ICs all point as shown in image below.

6.       Here we show charging point as blue mark numbering and ICs point as red mark so connect all those carefully.  

Conclusion:

During new pin changing process we should properly connect app pin point to PCB point otherwise after all these process we will not get solution.

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