Jump to content

Ripped switch rubber membrane and fingerprint sensor cable


Recommended Posts

Hello,

everything started with one problem - the stock camera app froze right after start and even though OpenCamera did show the camera input, it was not able to focus. My idea was that the problem is in the software, so I backed up everything valuable, than loaded LineageOS.

As you probably guess, the problem was still there. I believe that fingerprint sensor did work at this stage before first opening correctly. So I opened the phone, having no clue, what to do. But Heureka! I found one of the camera connector completely disconnected. So I connected it back and the camera started to focus again.

Thinking this is the end I closed the phone. 

But than I found the fingerprint sensor does not register any touch. I tried to add new fingerprint, but nothing happened, when I touched the sensor.

So I opened the phone again, finding that I forgot to connect the sensor back. Silly me. Unfortunately, after next try, the sensor still did not work. So I opened it again, trying to re-seat the connector. But after several attempts, the sensor just did not work and to add insult to injury, I found the power button is now sunken!

The reason for it is I have managed to rip the rubber membrane of FPC switch, so now the plastic piece of button cannot reach the switch on board.

To cut this short, in the end, I actually managed to rip the fingerprint sensor cable. 

So my questions are:

1) How to fix the switches? The image is attached. I was thinking about extending the reach of the plastic piece with something. I will also try to ask in the repair shop on Monday.

2) Is it possible to buy the new fingerprint sensor standalone? I found those on AliExpress, but those maybe different size.
Pocophone F1
OnePlus 5

 

I was thinking about contacting the support, but after reading the horror stories here on forum, I am reluctant to do it.

Thanks for any advice in advanced.

camera.jpg

fingerprint.jpg

switches.jpg

Edited by hostar
  • Sad 3
Link to post
Share on other sites

Sad story, though at the least you got the camera fixed.

I have no idea if any other phones fingerprint reader would match. I have not heard it mentioned. But would be great if a more widespread device uses the same cable, as the cable is definitely vulnerable opening. Others have reported tearing it,

On the torn membrane, I would try with tiny pieces of (non conducting) duct tape and see if that would do the trick.
My guess would be that they wont have the membrane as a spare, but would replace the 'entire' side print with all three contacts.

  • Thanks 1
Link to post
Share on other sites

Kind of positive development since that - I found repair shop which were able to do just that - append a piece of thin duct tape to the FPC button. Small problem now that it does not do the nice "click" feedback when pressed, the pressing is kinda muddy, but still better than I would have managed.

@EskeRahn - if I would contact support, could they send me the spare fingerprint reader? Or do I have to always send the whole phone?

Thanks

Link to post
Share on other sites
2 hours ago, hostar said:

Kind of positive development since that - I found repair shop which were able to do just that - append a piece of thin duct tape to the FPC button. Small problem now that it does not do the nice "click" feedback when pressed, the pressing is kinda muddy, but still better than I would have managed.

@EskeRahn - if I would contact support, could they send me the spare fingerprint reader? Or do I have to always send the whole phone?

Thanks

They do send spare parts, but I have no idea if they have spare FP sensors.

P.S. Eske is just a power user, not affiliated with fxtec nor working for them. So he has to guess exactly like me.

  • Thanks 2
Link to post
Share on other sites

I'll have to open my phone at one point. You make it look relatively easy (opening it a couple times) so I'll probably do it sooner.

That being said, I don't need the fingerprint sensor at all - I never use it. So if you won't get the sensor from FxTec, I'll send you mine. With the idea of adding a secondary USB-port (don't know yet if that's possible with USB C) I wouldn't need a defective replacement to cover the hole.

However, it's entirely possible that I'll not open the phone until christmas so that's not a quick solution.

 

Regarding the buttons: I don't think the buttons need the rubber cover, it'll just make the clicking a bit smoother. You just need a way to add the 0,2mm distance that was there before since the button movement is so limited. i'd try to use small paper strips for that since it isn't as soft as tape. If you want a rubber solution, you might also want to go for rubber based color/liquid coating. That could be applied very easily and should be elastic enough to withstand the button usage.

  • Like 1
  • Thanks 2
Link to post
Share on other sites

Really? That would be amazing, thanks. Where do you live though? I suppose we should move this conversation to private messages. It does not matter if it will take until Christmas. So much is happening in my life right now, it will be in no time.

Regarding the adding of distance to button - some repair shop I found already fixed that, but thanks for ideas. The liquid coating I managed to find seems to be only for heavy duty purposes, such as roofs and floors.

  • Like 1
Link to post
Share on other sites
3 hours ago, hostar said:

Really? That would be amazing, thanks. Where do you live though? I suppose we should move this conversation to private messages. It does not matter if it will take until Christmas. So much is happening in my life right now, it will be in no time.

Regarding the adding of distance to button - some repair shop I found already fixed that, but thanks for ideas. The liquid coating I managed to find seems to be only for heavy duty purposes, such as roofs and floors.

Just a thought. you could send the defective one the other way, as it certainly would fit the hole perfectly 😉

  • Like 1
Link to post
Share on other sites

I had ripped the membrane on one of the buttons a bit like that when reassembling, but it was still good enough to work (all bits still attached). The second time I assembled i placed some kapton (mylar) tape over it to protect it from damage on assembly because I was quite concerned about destroying it further, this appears to have worked.

image.thumb.png.5d2033bd653b8c1fcda2d60ef196c7c6.png

  • Like 4
  • Thanks 1
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

Terms