S6 Edge Keys Not Working - GSM-Forum

mawaqas · 03-06-2018, 12:20

hi i got an s6 edge. the back and menu key next to Home button don’t work. No light. Anybody knows how to make ways?

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clebo · 03-06-2018, 18:07

what have you done so far to the handset?
have you tried to reflow the pcb as i see the handset was dropped.

please reflow and try a software update.

then post reply if it does not work

mawaqas · 03-06-2018, 18:08

Quote:

Originally Posted by clebo

what have you done so far to the handset?
have you tried to reflow the pcb as i see the handset was dropped.

please reflow and try a software update.

then post reply if it does not work

hi it was water damaged. which ic i should reflow?

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clebo · 03-06-2018, 18:34

i would normaly check where it was coroded , i would clean and reflow.

however asses the componants near the charging flex conector.

reflow else test the handset with another flex

clebo · 03-06-2018, 18:34

i would normaly check where it was coroded , i would clean and reflow.

however asses the componants near the charging flex conector.

reflow else test the handset with another flex

mawaqas · 03-06-2018, 20:28

Quote:

Originally Posted by clebo

i would normaly check where it was coroded , i would clean and reflow.

however asses the componants near the charging flex conector.

reflow else test the handset with another flex

i need to know what lines power the keys or what ic is responsible. they forum is not being useful recently as the experienced members dnt even bother helping at all

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moding · 03-06-2018, 20:31

if the display connector is clean and has NO corrosions, then it is pretty obvious that you have an broken line for the soft keys, down on the display, left and under the home button.

if so, you will not be able to get it to work again.

the best way to check if you have a faulty mainboard or display unit, would be to take another s6 edge mainboard to test this display unit with it...

mawaqas · 03-06-2018, 20:40

Quote:

Originally Posted by moding

if the display connector is clean and has NO corrosions, then it is pretty obvious that you have an broken line for the soft keys, down on the display, left and under the home button.

if so, you will not be able to get it to work again.

the best way to check if you have a faulty mainboard or display unit, would be to take another s6 edge mainboard to test this display unit with it...

the flex cable looks like this. it’s got the touch buttons on the flex. what’s it got anything to do with display???

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moding · 03-06-2018, 21:52

MAN CAN YOU READ?!?!?

for the 3rd time now: THE SOFT KEYS ARE INSIDE THE DISPLAY! On the flex cable is only the light for the soft keys!

UNDERSTOOD NOW?

mawaqas · 03-06-2018, 21:55

Quote:

Originally Posted by moding

MAN CAN YOU READ?!?!?

for the 3rd time now: THE SOFT KEYS ARE INSIDE THE DISPLAY! On the flex cable is only the light for the soft keys!

UNDERSTOOD NOW?

oh right. now i understand. the flex cable pads are only for light not for touch! normally cables like these have touch build in to them. ie s6

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moding · 03-06-2018, 22:03

restart the phone and see if the soft key lights will turn on for few moments. if yes, then the U7002 is OK and you have definetely broken soft key lines inside of display, so when you press the soft keys, the light can and will not turn on, because it is like you don't touch the keys at all ;-)

understood?

mawaqas · 03-06-2018, 22:05

Quote:

Originally Posted by moding

restart the phone and see if the soft key lights will turn on for few moments. if yes, then the U7002 is OK and you have definetely broken soft key lines inside of display, so when you press the soft keys, the light can and will not turn on, because it is like you don't touch the keys at all ;-)

understood?

when i restart there is no light!!!

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moding · 03-06-2018, 22:12

then you will have to check the mainboard very carefully under the microscope and search for liquid damages or you maybe can try to get another s6 edge mainboard to test if mainboard or display is faulty.

mawaqas · 03-06-2018, 22:27

Quote:

Originally Posted by moding

then you will have to check the mainboard very carefully under the microscope and search for liquid damages or you maybe can try to get another s6 edge mainboard to test if mainboard or display is faulty.

i have a lab setup microscope and eveything but i can’t seem to find any schematics that would explain how those touch buttons work and which ic supplies them power and power ways!

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ryanna · 05-15-2018, 07:11

This solved my back button not working problem *#2663# then TSP FW UPDATE

03-06-2018, 12:20	#1 (permalink)
mawaqas Freak Poster Join Date: Oct 2016 Posts: 212 Member: 2643514 Status: Offline Thanks Meter: 28	S6 Edge Keys Not Working hi i got an s6 edge. the back and menu key next to Home button don’t work. No light. Anybody knows how to make ways? Sent from my iPhone using Tapatalk

03-06-2018, 18:07	#2 (permalink)
clebo Freak Poster Join Date: Aug 2005 Age: 39 Posts: 223 Member: 176003 Status: Offline Sonork: bb pin 27883543 Thanks Meter: 74	what have you done so far to the handset? have you tried to reflow the pcb as i see the handset was dropped. please reflow and try a software update. then post reply if it does not work

03-06-2018, 18:34	#4 (permalink)
clebo Freak Poster Join Date: Aug 2005 Age: 39 Posts: 223 Member: 176003 Status: Offline Sonork: bb pin 27883543 Thanks Meter: 74	i would normaly check where it was coroded , i would clean and reflow. however asses the componants near the charging flex conector. reflow else test the handset with another flex

03-06-2018, 18:34	#5 (permalink)
clebo Freak Poster Join Date: Aug 2005 Age: 39 Posts: 223 Member: 176003 Status: Offline Sonork: bb pin 27883543 Thanks Meter: 74	i would normaly check where it was coroded , i would clean and reflow. however asses the componants near the charging flex conector. reflow else test the handset with another flex

03-06-2018, 20:31	#7 (permalink)
moding Freak Poster Join Date: May 2008 Posts: 109 Member: 777576 Status: Offline Thanks Meter: 32	if the display connector is clean and has NO corrosions, then it is pretty obvious that you have an broken line for the soft keys, down on the display, left and under the home button. if so, you will not be able to get it to work again. the best way to check if you have a faulty mainboard or display unit, would be to take another s6 edge mainboard to test this display unit with it...

03-06-2018, 21:52	#9 (permalink)
moding Freak Poster Join Date: May 2008 Posts: 109 Member: 777576 Status: Offline Thanks Meter: 32	MAN CAN YOU READ?!?!? for the 3rd time now: THE SOFT KEYS ARE INSIDE THE DISPLAY! On the flex cable is only the light for the soft keys! UNDERSTOOD NOW?

03-06-2018, 22:03	#11 (permalink)
moding Freak Poster Join Date: May 2008 Posts: 109 Member: 777576 Status: Offline Thanks Meter: 32	restart the phone and see if the soft key lights will turn on for few moments. if yes, then the U7002 is OK and you have definetely broken soft key lines inside of display, so when you press the soft keys, the light can and will not turn on, because it is like you don't touch the keys at all ;-) understood?

03-06-2018, 22:12	#13 (permalink)
moding Freak Poster Join Date: May 2008 Posts: 109 Member: 777576 Status: Offline Thanks Meter: 32	then you will have to check the mainboard very carefully under the microscope and search for liquid damages or you maybe can try to get another s6 edge mainboard to test if mainboard or display is faulty.

05-15-2018, 07:11	#15 (permalink)
ryanna Freak Poster Join Date: Jul 2010 Posts: 152 Member: 1349375 Status: Offline Thanks Meter: 8	This solved my back button not working problem *#2663# then TSP FW UPDATE