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Problems after screen replacement

  1. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    Hey guys, hoping you might have some ideas I can try on my friends opo.

    Spent the last 2 hours trying everything I could find online, to no avail.

    Here's the story,

    After trying mine, my friend bought a opo a few months ago, all was well.

    Last week she text me (from a temp phone) saying she had dropped it and smashed the screen but it still turned on.

    She bought a replacement screen and got some 'non tech minded' person to attempt to install the new screen.

    Next I here, the screen's been installed and now the phone won't work at all.

    She posts opo to me.

    First thing I tried, pressing the buttons in all combinations suggested online...nothing.

    Then, plugged into charger and the screen lights up with some chinese writing and a battery symbol and underneath is says battery too low.

    Left it overnight (12 hrs) without touching, same problems next day.

    Reluctantly, I opened my own opo, removed the battery and put my friends battery in. I get the same screen on my opo, chinese writing...battery too low etc.

    I try MY battery in my friends opo and...nothing, until I plugged it in..phone vibrates and the 'powered by android' logo is shown. At this point nothing else happens. It just hangs.

    It won't turn off, pressing the buttons does nothing, trying with the cable removed makes no difference. The only way to turn the phone off is to remove the battery.

    Have I missed anything obvious? Anyone with any ideas I can try?

    Cheers Wez
     

    #1
  2. matthewtaylor1995 Honeycomb Aug 19, 2015


    #2
  3. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    No

    Worth a try?
     

    #3
  4. matthewtaylor1995 Honeycomb Aug 19, 2015


    #4
  5. Deactivated User Aug 19, 2015

    Deactivated User, Aug 19, 2015 :
    You were willing to muck up your phone just to help her? What a nice guy.
    Very probably there is a direct short with her phone and no matter what, that short won't go away by magic.
    I hope you can still put your battery back in your own phone, let it charge up first,

    She's going to have to bite the bullet, and buy a new phone, maybe the Moto X Style.
     

    #5
  6. Del1958 Ice Cream Sandwich Aug 19, 2015

    Del1958, Aug 19, 2015 :
    The power on button ribbon cable to the motherboard has been ripped, check it with a magnifying glass. I have replaced lots of these, not a big job.
     

    #6
  7. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    I already tried putting my battery back in my OPO and it boots up fine
     

    #7
  8. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    Is there a place on the ribbon this usually happens? Or check the whole length?
     

    #8
  9. Deactivated User Aug 19, 2015

    Deactivated User, Aug 19, 2015 :
    then put hers back in your phone, and charge that battery back up.
     

    #9
  10. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    What good will having 2 charged batteries do?
     

    #10
  11. Deactivated User Aug 19, 2015

    Deactivated User, Aug 19, 2015 :
    If/when you get her phone fixed, the she'll have a fully charged battery!!!
     

    #11
  12. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    Wow..thanks for the advice, doesn't really help me address the issue in hand though, which is kind of the point of the thread.
     

    #12
  13. Deactivated User Aug 19, 2015

    Deactivated User, Aug 19, 2015 :
    Well, are you going to fix it??? That was the point was it not?
     

    #13
  14. Del1958 Ice Cream Sandwich Aug 19, 2015

    Del1958, Aug 19, 2015 :
    Straighten the cable out, check the whole length, look for a tear. Try this to turn the phone on. Look at where the ribbon is soldered on to the motherboard, see the two blobs of solder, touch the two blobs with a small screwdriver for about 4 seconds, this should turn the phone on. If not your fault lies elsewhere.
    You also have a charging problem, which could be the charger Jack cable.Try the power button first.
     

    #14
    Wez3570 likes this.
  15. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    Appreciate the response..thankyou, I'll try it.
     

    #15
  16. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    Charging the battery isn't really a priority.

    If I can fix the phone, it can charge the battery itself but thanks for your suggestion all the same.
     

    #16
  17. mwayner Lollipop Aug 19, 2015

    mwayner, Aug 19, 2015 :
    No /electronics/phone repair shops where you live? Sounds like something was not connected properly during reassembly. Take it to a pro. They'll sort it out pretty quickly.
     

    #17
    Gaurav Rohilla likes this.
  18. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    She tried somewhere local and they looked at the phone like it came from Mars!
     

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  19. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    Ok, I've made some progress.

    I can now power up and down using the 2 solder points for the power button.

    I can still only get as far as the opo logo though.

    I'm thinking possibly the volume ribbon may be damaged also.

    Of the 3 solder points for volume, which is up and which is down?

    Am I right in assuming the centre solder point is negative?
     

    #19
  20. Wez3570 Froyo Aug 19, 2015

    Wez3570, Aug 19, 2015 :
    The 3 solder points for the volume ribbon..which is up, down, and negative?
     

    #20