iphone 5 no backlight after lcd change – is this cellphone of iphone hardware issue

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iphone 5 no backlight after lcd change – is this cellphone of iphone hardware issue

On January 27, 2015, Posted by , In iPhone, With Comments Off on iphone 5 no backlight after lcd change – is this cellphone of iphone hardware issue

HI,


As per title, i changed a iphone 5 lcd and it came on ok at first then after re-assemble the backlight went off and hasnt come back on. Phone comes on ok but no backlight.

Thanks

No Comment so far:

  1. Wela says:

    Any info…………………

    Br

  2. ExpertBuddy says:

    No one had this problem?

    Br

  3. TechWorld says:

    anyone, ive had two like this now, working ok Along with old screen but after lcd/digitizer replacement no backlight. put old screen back in and still no backlight.

    thanks

  4. newComer says:

    remove battery when replacing digitizer… if not digiter somehow gets short… dunno about backlight issue… search forum…

  5. julianz says:

    i think ive found the problem, the three solder joints at the top of the screen didnt have tape over them, i think they shorted out on something and killed backlight coil/ic.

    are the three solder joints for the lcd backlight?

    br

  6. ExpertBuddy says:

    i dont think thats the problem… but keep us informed… also to remind you iphone boards are very sensitive make sure you didnt damaged any component… use microscope!

  7. newComer says:

    they worked ok when tested outside case, when the lcd/digit was pushed in it did not work hence the solder joint/short theory.

    br

  8. newComer says:

    as i said before new apple boards are too sensitive you probably damaged a component… investigate Along with a microscope…

  9. ExpertBuddy says:

    kindly check the small components between the LCD and Touch Digitizer sockets.

  10. julianz says:

    Check L3 and L19 Along with a ohmmeter if are not breaked.

    I had an issue last night Along with those two coils, one side have desoldered.
    I have resoldered the copper wire on the board , and now display is working again title=smile

  11. newComer says:

    Trying to make a reboot (Home + Power

  12. newComer says:

    Change lcd if not fixed try to fix it hardware

  13. julianz says:

    bought your kit and replaced 3 filters, diode, and the coil and still no Backlight? any idea what else could be bad?

  14. TechWorld says:

    I am following this thread because I had the exact same issue. Did you resolve it? I have tried 3 digitizers and cant see a display? I even tried to go back to my original cracked screen Along without luck. I thought I was very careful replacing the digitizer but now my phone has a black display. If you were able to find the solution kindly share.