S5 capacitive buttons, repair Q - Galaxy S 5 Q&A, Help & Troubleshooting

Hi s5 folks. Repairing an s5 for a friend. Bought the new LCD and didgitizer, but the capacitive buttons do not seem to be working. I noticed that the thin black cables were halved (the ones that wrap onto the front around the lights for the buttons)... Did they hold the magical powers of capacitive touch or were they simple the power for the lights?.

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Dirt under touchscreen

I've got dirt the size of a couple pixels under the touchscreen, next to the volume rockers on the left. Anyone else encountered this problem?
Also, I've been having the device for 5 months now, and the volume rocker has become far less responsive due to plastic bits falling from those square up/down keys under the cover. The ugly electronic parts are now exposed and I wonder how long until they're damaged too -- my biggest 'fear' is not being able to flash new ROMs if Volume-Down keys fail, making me unable to press it together with the power button to access the SPL.
The shiny bottom on the rear has its protruding part scratched in a symmetric ')' pattern.
My friends with the Diamond and G1 also have issues with the build quality. In all honesty, HTC could probably take a lesson from Motorola:
http://www.youtube.com/watch?v=efcMo4TA6UU

Broke Cable to the buttons

Hi my friend gave me her HTC wildfire to fix the digitiser as another friend dropped the phone in olive oil and well oil doesn't go well with the capacitive screen.
While trying to clean the capacitive part (which failed I'm going to have to buy a new screen) I managed to break the connector going to the front buttons the small ribbon cable the opposite side of the display and capacitive cable attachments.
So my question what does this cable do I assume that this only powers the lights behind them or does it also run the buttons?
Thanks.
It's just the lights, I broke mine when fitting a new screen. The buttons still work i just have no backlight.
Sent from my Wildfire using xda premium
Thanks that's what I thought, the buttons still work on occasion and are part of the capacitive screen.
Well to fix the screen now.
Thanks for your reply.

Replacing front plastic panel color with Home button = not working Fingerprint scanne

Hello all! Sadly, some time ago I have dropped my S5 onto a concrete curb & my screen got through that 2 cracks on the plastic digitizer protector & has missing a bit of the glass at the top & has a hole through the plastic panel under the bottom which worries me about it still being waterproof... I wanted to get the plastic panel replaced (which is relatively cheap since the digitizer isn't broken) together with changing it's color from white to black together with the Home button (I got the white S5, which I now regret getting...) but a friend of mine told me that when the Home button would be changed, I would loose the fingerprint scanner function, which worries me a bit [emoji52] Can someone confirm if this is true or not? Because if it is, then I gonna have to stay with the white color, which I don't like that much now [emoji17]
Someone?

Replacing the Lcd galaxy A3 help

Hi all.
Looking for help fixing my galaxy A3.
We broke the lcd screen so decided to fix it our selves.
In removing the broken Lcd we broke the light tabs at the bottom on the USB board.
Now, I have just replaced the USB/ light board at the bottom.
But from memory I thought that the lights still worked whilst the lcd screen was removed.
Now, before I order the new lcd screen, Is there a way I can test the USB socket and touch lights actually work?
Or it will be pointless sticking on a new screen.
Thanks guys.

Do the two buttons next to the home button react to electricity or pressure

Hey guys!
I have a Samsungs s7 edge and I'd like to glue a film on the front part where its no touchscreen. But now I ask myself if the two buttons on the left and right of the home buttons will still work if there is a film on it. So my question: do those buttons react to pressure or to electricity??
Thank you all
It cant be pressure because full covered glass screen protectors cover that area up. Its got to be some sort of electrical sensor
I assume they work exactly the same as the screen itself.

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