How to solve not working contact service fault in nokia 7210c

Fault description:

Nokia 7210 has contact service fault due to bad pm file, in some cases pm file corrupted in mobile so we get this error that when we power on mobile then it just shows contact service message in red letters on screen and then power off after few seconds.  

Fault solution:

1.      First we should flash mobile with latest version. we can flash mobile using any flash tool like mx key or ufs or jaf box or mt box
2. Now check weather problem solve or not if no then apply next step.
3.We have to write full pm file (permanent memory) in mobile. All pm file can be downloaded from support site of our flasher box. For write pm file using mx key we have to follow following steps:-

 A.      First connect mx box to computer

B.      Then select appropriate mobile brand here we should select nokia service tool

C.      Then select appropriate model here we select nokia 7210c rm-436

D.      Then go to service  tab

E.      In service tab open sub tabe PM

F.        Now press load from file here we have to open PM file from our computer location where we had stored it.

G.      Here we select 7210c pm file.

H.      Now write full pm file of all section.

Now contact service problem will solve.

If still we get the error then we have to buy new rpl file from server.

 Conclusion:

PM (permanent memory) file is most risky file in mobile phone because it stores all important data of mobile so during writing pm file we should take care that file should be same as mobile model no. otherwise we will get further many error.

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Samsung E1110 doesn't start blinking solution

Fault description:

Samsung mobile sometime doesn’t start when we power on mobile it just hangs on Samsung logo only. This fault occurs because of internet problem or corrupted software.

Fault solution:

For this problem solution we have to use flasher box z3x or hwk. Here we use z3x box. Use these steps for successful flashing:

1.Connect z3x box to computer

2.Attach mobile via flashing cable as shown in cable name icon and select mobile model from list

 Here in below image we can find exact cable for mobile as shown below

3.      Press read info button it will show all basic version we should remind that software version should be used newer then mobile already have. 

4. Now select  bin file and tfs file from my computer as shown in image below :

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Sony ericsson X10i charging drains battery or stops

Fault description:

Sony ericsson Xperia X10 has a major charging problem some time we had noticed that mobile just shows charging indication on display but mobile drains battery quickly . In some cases after few minutes of charging it stops , in such cases we have to check hardware section so here we describe how to solve charging problem of Xperia X10 i .   

Fault Solution:

There are four common solutions for this problem so we have to proceed step by step.

1. First we should change the battery because in some cases the battery has an internal problem in its circuitry and due to that we got an error.

2. Then we should try to change the charger becomes sometimes the charger's internal component gets short circuited, then the charger shows false charging and we get a false charging error.

3. Now open the mobile and clean the mobile PCB and charging connector, then check the charging.

4. If the above tricks don't work then check the line continuity from charging point 1 to the transistor below this point show in the yellow mark. If there is no line then apply the jumper from point 1 to this transistor.

5. Check point 2 it should be grounded.

6. Now check charging point 5. It should have the line to the component below it shown in the green mark point 2. If there is no line then apply the jumper.

7. Now apply the jumper from the charging point and 4 to 4 point (ball) charging the IC on the upper side 2 point (ball) as shown in red mark and 4.

8. After all of this is done, if the problem still remains then finally change the 4 point charging IC.

Conclusion:

For the charging problem solution we should follow all of the procedures step by step, because if we use step 4 and 5 first then there is a chance it could damage the mobile.

Just take things slow and do what's necessary step by step without rushing. You will solve the problem in the end, but you just have to be patient. Rushing things and making mistakes is only going to cause frustration and aggravation, and in the long run could end up causing permanent damage. It just isn't worth it to hurry through these steps.

And you should always check to make sure that the jumper wire is in good condition and the connectors are clean.

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Sony ericcson x2 xperia not charging

Fault description:

Sony Xperia x2 mobile sometime got charging trouble. In such case mobile shows charging error or not charging or charging no response error. This problem caused by overcharging or over voltage from charger. 

  

Fault solution:

For this problem solution we should first check basic things like charger or new battery before checking hardware area. After these primary testing apply following tricks:-

1.    First clean battery connector due to some carbon on connector we get such error.

2.    Check charging point for any dust or carbon and fully clean it with acetone or white petrol. If problem still not solve then open mobile pcb and check next solution. 

3.    First check all charging point continuity from charging point to all point specified in picture in red mark. If line missing from any point then apply jumper from that charging pin point to that appropriate point. 

For example in this case charging connector point 1 have no line continuity to that point so we apply jumper in blue mark shown in image below.

4.    If problem not solve then try to rehot both charging IC and change both IC specified in picture below in green mark.

After applying all above tricks we will solve our charging problem . Conclusion :

While checking all line continuity we should use a perfect meter and equipment that will do a good job of testing and result in better checking and problem solving.

The problem is solvable, but it first important to clean the battery connector because when you are dealing with such a situation, any debris that may have lodged in the way is going to cause a problem. If you're lucky, once you clean the charging point that alone may solve your problem, although it is likely that further measures will be necessary.

It cannot be stressed enough how delicate such a battery really is in the sense that a tiny particle can simple prevent it from charging and cause it to shut down completely. It might sound like just another bothersome job to you to have to clean the battery connector, but no matter what the problem really is, and no matter what else you do, if you neglect to do this one small detail, it can prevent your mobile from working.

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