Screen Sensitivity Issue Status in Cyan (1520)

[Donny James]

Donny no more bend finely I've figured out real reason for this ghost problem, I hope so this time cause I get tired

Give it here.

 

[Hesham Fouad]

Tomorrow will upload it with photos

 

[Donny James]

Looking forward to it.

 

[Hesham Fouad]

-pic 1 unsecrew those 5 secreow marked with red
-pic 2 this is a picture from the other side, use a heat gun on the red rectangle mark to make sure ribbon not losing its solder, not too much but enough to heat it while press it to make sure its connected firm with board, and rise up those terminals marked with red to make better contact with the back of lcd, be careful not too much they are so sensitive
-pic3 this is a view after taking the main phone board, there is 2 marked area, one is for digitizer ribbon make sure its connect tight
other for something look like a grounding, rise it up a little with screw drive and you are done
so far phone work fine, if anything happen i will let you know

 

[Donny James]

View attachment 104641

-pic 1 unsecrew those 5 secreow marked with red
-pic 2 this is a picture from the other side, use a heat gun on the red rectangle mark to make sure ribbon not losing its solder, not too much but enough to heat it while press it to make sure its connected firm with board, and rise up those terminals marked with red to make better contact with the back of lcd, be careful not too much they are so sensitive
-pic3 this is a view after taking the main phone board, there is 2 marked area, one is for digitizer ribbon make sure its connect tight
other for something look like a grounding, rise it up a little with screw drive and you are done
so far phone work fine, if anything happen i will let you know

Y'Know i was kinds thinking the same thing about those connectors terminals [Marked with red dots]. I thought they were not connecting properly with the digitizer. I even gave a few a close look to see if they were bent down a little. I couldn't tell the difference though. Thanks.

 

[sahand riazi]

View attachment 104641

-pic 1 unsecrew those 5 secreow marked with red
-pic 2 this is a picture from the other side, use a heat gun on the red rectangle mark to make sure ribbon not losing its solder, not too much but enough to heat it while press it to make sure its connected firm with board, and rise up those terminals marked with red to make better contact with the back of lcd, be careful not too much they are so sensitive
-pic3 this is a view after taking the main phone board, there is 2 marked area, one is for digitizer ribbon make sure its connect tight
other for something look like a grounding, rise it up a little with screw drive and you are done
so far phone work fine, if anything happen i will let you know

thanks. I'm trying this. but actually there are 4 screws in picture 1, not 5!

 

[Hesham Fouad]

Thanks keep us with update riazi

 

[sahand riazi]

I just came across a problem. The Capacitive buttons (back, home and search keys) not working anymore!
What did I do wrong?

 

[Hesham Fouad]

I hope u didn't ruin the ribbon cable check if it still can read on PC via USB to see if it work

 

[Hesham Fouad]

This phone is sensitive I hope u watched YouTube video before u opened it, there is a good 20 min video on screen replacement search for it shall help u

 

[sahand riazi]

thanks for your help.
yes the usb cable works fine as I've connected it to the PC.

 

[sahand riazi]

Actually the bottom part of the touch screen don't work either.

 

[Hesham Fouad]

https://www.youtube.com/watch?v=WkGfydis6ZE
this is a good video
and ofcourse u always work while phone is off

 

[sahand riazi]

Maybe I've risen up those terminals too much?

 

[sahand riazi]

I have another problem. In my country (Iran) youtube is banned by the government and I can't watch the video.

 

[sahand riazi]

There's another problem.
I can't access youtube in my country (IRAN)

 

[Hesham Fouad]

then reverse and check, give more attention to the terminal on the back of mother board, if u cant see video i guess u can download a pdf on how to disassemble lumia 1520
things to be careful when you working
don't take off the whole mother board just rise it up quarter inch so you can use screw driver to rise terminal up
why, cause vibrator motor is hard to put it back and sometime wont work, mother board wont come out as soon as u unscrew (5 secrews and one for secure cable of the battery and charger terminal under sink adhesive) it why cause
the proximity sensor is glued to the frame it will need some time to take it out from the frame
take it to mobile service shop if it going to be complicated, good luck

 

[sahand riazi]

I'm on it.

 

[sahand riazi]

Is there anyway I can find out how much should I rise those terminals?

 

[Hesham Fouad]

3-5% at most for the lower ones
and 20-30% at the back of the mother board
and skip heat gun, could ruin your cables,i will pay more attention to the back of mother board, but i did check all grounding to be sure all is fine
under motherboard there is some slop down push them down and rest of terminal slop up ,push them up