How to Check Parts of a Mobile Phone for Fault

Santosh Das

Santosh Das is an Engineer, Blogger, Young Entrepreneur and Founder of this Mobile Phone Repairing Website. Santosh possesses vast experience in the field of electronics, telecommunication, Soldering, SMT, ESD Safety, and electronics manufacturing tools, equipment and consumables. Santosh left his job in 2014 and started his own Private Limited Company that deals and supplies PCB Assembly and Rework Tools, Equipment and Consumables. Keep visiting for daily dose of Tips and Tutorials.

48 Responses

  1. karthikeyan says:

    1)In Multimeter which one is good digital or Analogy
    2)If digital meter first Where can i set the for check ohms

    • karthikeyan says:

      1)In Multimeter which one is good digital or Analogy
      2)If digital meter first Where can i set the for check ohms(In multimeter)
      3)If Analog meter first Where can i set the for check ohms(In multimeter)

  2. Gabal Babaji says:

    Hi sir i like ur site very much.body of my cell phone is short .how can i solve this problem.

  3. Gabal Babaji says:

    Hi sir i like ur site very much.but i have a problem,body is short how can i solve this problem

  4. thaunghtay says:

    thank you

  5. .saeed ahmed says:

    Hi sir where r u?

  6. .saeed ahmed says:

    Aoa Sir very nice l like it. Sir plz send me Iphone like 4 4s 5 5s repairing tips to my this Gmail address plz.

  7. yogendra garg says:

    Sir mujhe mobile ki pcb track check kaise krte fuse coil capcatrs digital mieter me kiase check krte hai video chahiye

  8. jitprakash says:

    jai bigyana…

  9. raheem says:

    Sir how to check series current in tablet

  10. YORDANOS says:


  11. rahul says:

    this is a great site,

  12. H.Murugan (mtrendz) says:

    iam not a technician but i visit this this web page. Now i would like to achive a tech..
    very very thanks to all.this articles very usefull…….

  13. amit says:

    Hi samsung v3303 no network problem

  14. Murphy martins says:

    My blackberry turch1 phone is draining fast the battery., pls what’s your advice.?

  15. amit says:

    My nokia c1 is dead on/off swicht voltag 1.43v how to solv

  16. manoj goyal says:

    Can u explain the cool testing,hot testing,parallel track and series track

  17. Fred says:

    Hi, Great site. My Samsung Galaxy Y. switches on but will not get past opening flash and SAMSUNG letters will not go beyond this and when I press off/on with operation key it just goes back to same. Any ideas.

    • Santosh Das says:

      Reset the phone and check. It the problem is not solved by flashing then you may have to reload the software.

  18. kamal says:

    Iphone 3g heating problem near power control ic, check the capacitor as said beeps ?, battery charging connector on logicboard shows 0.7 v on charger plugged , charging port Ok .pls help

  19. amit says:

    How to solv problem

  20. amit says:

    Tellme. How solv the problem

  21. amit says:

    Yes i reset the phone and other sim check but not ok

  22. amit says:

    My nokia mobile problem
    “Invalid sim” how to problem solv

  23. Sayyed Ismail says:

    Hello thanks for detail this is very help full for me

  24. sanjay says:

    Cant hear callers voice in mobile earpiece ,but can hear in loud speaker what is the problem and how to rectify

  25. Suresh says:


    I have Karbon a21 the power on mother board is OK but no display. I changed the display but still it is blank and the display is getting hot at the bottom. What to do now?

    • Santosh Das says:

      There is some short in the phone. The phone Karbon A21 has faults in its design and manufacturing. This is a common problem in all A21. It is better to get rid of the phone and buy a new one. Any money you spend on its repairing will be waste. Never trust Karbon.

  26. A karthik Srinivas says:

    Very useful tutorials… Thanks a lot…

  27. Roki says:

    My mobile phone is turning off. when headphone jack through 9v dc supply.whats the problem.
    thank !!!

  28. raj says:

    is ur collage in jalandhar punjab state thanks

  29. Sushil Kumar says:

    good site.I like.


  30. safwan says:

    hi ray,

    is there any institute of urs where i can learn mobile repairing course


  31. James Imaga says:

    Hi,I’m highly impressed by your tutorials they’re are top class and easy to understand and moreso highly factual I want to say its one of the best I’ve come across on mobile phone repairing tech.Keep the good work up.Please can you send me some tutorials on mobile phone jumper setting I’ll be very grateful.Thanks.U can use my email to reach me.

  32. Eyayu says:

    Very very thanks it is great knowledge in this site .

  33. yemane says:

    you done it best thanks!!

  34. Raju Jat says:

    I love This site

  35. modou says:

    this offers useful guide to beginners in cellphone repair.we would be glad if the info is more comprehensive. thanks a lot

  36. sanyog salve says:

    Hi sir
    I like this site and i learnt so many things .
    and i m very great full to you.

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