Samsung s6 edge proximity sensor problem

[evisdaci]

Hi everyone
I have a samsung s6 edge and i have problem with proximity sensor. Some month ago everything is ok, but i have problem with sim port. So i open the phone and repair the sim port, but after this moment the TV Remote Control didn't work any more and some time proximity sensor didn't work too. I try some ways to solve like phone reset, firmware update and some other things but no success. Finally i open the phone again and i change the proximity sensor which is together with IR sensor. But no success again, TV Remote Control didn't work and proximity sensor some time work some time didn't work. Please any help for this problem because for me is important TV Remote Control
Thanks

[jodge]

check the service menu first nad post the values or screenshot pls
*#0*#

[evisdaci]

For the moment proximity sensor is working, IR remote control not working. Follow are the photo

[jodge]

can you test the ir led pls? In the test menu or with a remote tester, or another phone?
In the sensor test menü when you cover the proximity sensor it's passing? (green lcd and the proximity is changing 0.0 to 1.0)

[evisdaci]

Yes i have test and that moment it work fine. I covered phone with hand and lcd be green and value range are 0.0 and 1.0. But sometimes it didn't work and nothing happened during the test. The screen stay white and the value show 0.0 all time. For IR sensor the led turn on when i try to change channel on tv but nothing happens. I have try with different tv, ac, ect but not work. My brother have the same phone and it work fine all the time

[evisdaci]

Please any help

[jodge]

i have some idea:
1: you made some mistake under the disassembly and partially moved something like an smd resistor or a flex connector pin (partially working stuff)
2: if you are used hot air gun (removing the back cover and for the sim reader fix) you overheated something
3: you not correctly assembled the phone (e.g.flex connectors..)
4: there is a small black rubber. His part in the game is separating the proximity sensors from each other and from the LCD glass. If you not put back or not correctly the sensor hub going to crazy. Like yours

[jodge]

One more thing i'm in the gsm business since 1994. You need proper equipments and skills this kind of jobs. I make a huge amount of money bcose the youtube and a DIY tutorials "ohh that easy i can do it too"
Yes you can do it if you lucky enogh.

[evisdaci]

Thanks mate, i have tools to do this job because i work with electronic circuit. I haven't use hot air gun, i think the problem is in connector. Maybe when i assembly the phone and when i have connect the IR sensor with motherboard in this moment maybe the connector is damaget. This is the reason and for proximity sensor with work some time and not some time. I thinks any pin on connector is damaget.

[jodge]

Check the felx connector under 40x microscope and adjust carefully with a extra thin needle the center of the connector. If moving it's broken and you'll see the damaged part(s)
If really broken you will need a special infrared soldering station to change plastic flex connector on the motherboard not the regular hot air. Those are melting the connector and the infrared not so fast and you have time to change it.
Like the ACHI IR-12000 (it's a bga rework station but you can use to smaller jobs too)

[Kalemaroni]

Can't you just mix in low melt solder? That way you can reduce the temp of the hot air so it doesn't melt the connector

[jodge]

The problem is not just the plastic connector but the connector pins too. If you messed up the temp with hot air the plastic is melting and/or the golden pins are fully covered with soldering stuff even the contact area. And its not working anymore.
If you lucky and you have some skills yeah you can do it. But better with IR station. It's like digging a grave, what you choose? Spoon or shovel? Both working