Mobile Phone Light LED Problem and Solution – How to Solve Light or LED Fault in any Mobile Cell Phone

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.

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25 Responses

  1. J says:

    Hi Santosh, nice article.
    I have a Redmi 3s where the backlight is not working. I can see the display if I shine a flashlight directly on it.

    I tried to follow a youtube video and found that after the diode, the voltage is only 4V – instead of probably 30V after the boost coil.

    Does this mean the boost coil is spoiled? – very hard to find what part to buy.

  2. bapi roy says:

    Sir amar nam holo Bapi.
    amar ekta mobile mobiler nam holo lava Iris 402 lcd pblm .
    to amar lcd nasto haye jabar pare ami sei lcd take change kare diye jakhan amar hanset take on karchi takhan amar mobiler handset er white haye jachhe to ekhn ami ki karbo to setake ki vabe thik karbo
    plz sir help me

  3. santu Lai says:

    Sir , mera nam Santu … Sir , mai koye v company ka mobile me track line ka pahachan nahi kar parahun(key pad or Android) … Plz solution di jiye.

  4. I m getting many many unwanted ads. on my samsung j2.
    And automaticaly opening google playstore.

  5. Ritesh rajput says:

    In my Bq E1 model ledbacklght is not off please

  6. Anmol Raaz says:

    Dear sir
    I want full lcd light track way in oppo Neo -7

  7. kalee says:

    i have problem with itel 1508 screen light problem

  8. Henry Ebri says:

    I have gretel phone when it istarts been powered it only vibrat without powering pls sir help me out

  9. Kanhaiya says:

    Dear sir

    Microsoft mobile rm 1036
    It’s showing white display there are some broken also in board
    Can you pls help me with right solution…..

    Thank you
    In advance…

  10. Suraj says:

    Sir,my name is Suraj. I have a mi mobile. One day it fall in water. So it was off. I took it to the service center but they told me change all motherboard. Then I gave it to my friend. He told me that only display light does not work. Because the IC is damaged. He returned my mobile. So please sir tell me what I do,because the center did not give proper solution.

    • Santosh Das says:

      Disassemble the Phone and clean the motherboard, all the connector and all soldering points with IPA using a Brush. You can buy IPA Solution and any Shop where they sell mobile phone parts. Clean properly everything and allow the IPA to Evaporate and dry up. Assemble back and check. Give a boost to the battery using a battery booster if required. I think it will start working.

  11. Gurdeep singh says:

    Sir ji mere pas micromax q106 Hai .uski power key chorte hi wo off ho jata hai. Plz, help me sir

  12. navnath bakle says:

    Samsung 3322 is auto vibrate only
    Pls solution

  13. navnath says:

    Samsung c3322 is battery inserted then mobile is full time vibrating
    Pls solution

  14. pushpraj says:

    Very very thanks

  15. pinkal das says:

    i want latest post of mobile servicing

  16. Lucky says:

    Dear
    I have a micromax tab p650. The battery current backflows to charger when connected. The charger LED glows even thpugh the charger supply is off. Please advice a remedy. Also advice on what if the problem is not attended !
    Thanks!

  17. Najib kiggundu says:

    thanks for all those updates

  18. luhiga says:

    Hallo

    Could assist me where can I buy a chinamobile phone diagrm/schematic

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