Background: I bought a Pixel 1 (5") off eBay with a known GPS issue and bad charging port. Also bought a second Pixel to use as a parts phone. On disassembly I noticed this gem (see attached photo).
Turns out both motherboards have this issue. Is this a common dilemma or do I have some great mojo going on?
The antenna connection fop (connector) has popped off with the male ends still connected to paired antenna. It may explain some GPS issues I've read about. Both phones had been obviously dropped (broken back glass and/or LCD). Antenna was loose on opening.
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Hi friends
I am having an handset(Tilt) with flex cable problem, but wondering if flex cable can solve my phones problem where it is doing the following:
-Not accepting the SIM.
-phone is getting hanged any times, speed is also very pathetic.
-keypad is pressed on its own.
-Phone is not accepting any charger but charging with PC USB.
These are some of the major problems, I wish if someone could help me out in knowing what work does a flex cable plays, coz the technician is charging so much to change the flex cable & giving me no assurance as to what problems will be solved. I would like to know from some of those technicians here who knows something about hardware. Mike I am talking about you specially.
I would like to write this in our XDA encyclopedia given the case I get proper knowledge about it.
Looking forward to answers.
This is quite difficult to answer without testing. The SIM not being recognised will in itself slow down the phone or even create a full blown crash.
It's not stated what flex cable we are talking about. Flex Cables are just multi wire connections between circuit boards. Phones often have 3, 4 or more flex cables. For example between the the physical keypad and the motherboard or the d-pad and the LCD screen or between screen and motherboard etc etc.
It IS possible a flex cable can get damaged. This normally happens in phones with a slide out keyboard where the flex-cable has to roll back and forth as the keyboard slides in and out. However, such a cable would not I think change the charging behaviour of the phone.
It charges on PC connection but not charger connection. To me that normally indicates a USB port connection problem - bent pin in the slot, possibly even crossed pins or a cracked or dry solder joint between the usb port and the motherboard.
Another thing to consider is whether all the battery contacts are making good contact with the phone. Here again the multiple connections between battery and motherboard can become dry or cracked leading to erratic or underpowered connections.
The keypad being pressed on it's own can again be caused by different things:
1
It could be a faulty or loosley connected flex cable
2
Pressure being put on the digitizer screen by something under the bezel or just a damaged digitizer layer
3
A key that is not releasing from the keyboard properly (is it always the same key or group of keys?)
4
Moisture at many different places inside the phone, including keyboard, d-pad etc. Even when dried out, the residue or oxidisation can continue to cause problems.
So, I would not rule out a flex-cable problem, but it might not be the only fault. Unfortunately then, the technician you spoke to may be correct and it is not possible to guarantee it will solve all problems. Having said that, I would want to say to the technician that I am not going to pay for a new flex if it does not solve any of the problems.
This is where it becomes difficult to decide whether to go for paid for repair or to attempt the job yourself.
Mike
Anyone have a broken XT720 they are willing to part out or maybe already started to part out?
I replaced my digitizer glass today (boy was getting the glass removed a pain in the ass!) and when I was reassembling the phone the white antenna cable end broke off that pushes down onto the mainboard.
You can see the cable at the 5m mark in this disassembly video (not mine):
http://www.youtube.com/watch?v=_WCVqEMZbU0&t=5m
(The video is good but unfortunately stops before taking out the digitizer glass)
I initially thought this may be for wifi antenna (same antenna cable found in laptops on wifi card) but I still have good wifi signal, but I am unable to register on network so it may be going to cell radio and not wifi radio.
I may try and make one out of an old laptop cable, but I would have to cut it/solder it to get the right length (and thats if the connector is the same), so I am hoping someone is willing to part with one!
Thanks!
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I'm suffering from a very frustrating issue with my Moto X Play. I can live without the gyroscope, but this issue is getting a tad ridiculous.
The Play seems to very easily cause the retaining prongs on a micro-USB plug to become recessed. This problem isn't uncommon, and easily rectified with a pin, but it is frustratingly frequent.
I've misplaced my original Moto cable, but that was working fine for the weeks I had it. Since then I have tried a variety of free, cheap, branded and expensive cables and the issue occurs fairly consistently after plugging/unplugging a few times - I can only use them for one or two charges before they become unreliable.
Has anyone experienced this and can anyone suggest a solution? I wonder if the micro-USB socket is a tiny bit too narrow..
As per the title I am getting a much diminished signal after changing the charging port to a new one.
The worst is when I grip it in my hand which would naturally be at the bottom - where the charging port is.
I only get LTE when I'm outdoors and indoors it's either H+ but usually H, E, or even NO SIGNAL.
I can't figure out what could be the problem. There are 2 antenna inside the unit that connect to the charging port but these are bluetooth and wifi. It doesn't appear to be an antenna for the network signal. Or is the frame part of the network antenna? I see some electronics in the frame when I dismantled and I don't know what that is for or how it connects to the mobo. I'm thinking if the frame works as an antenna maybe it's not connecting to the mobo properly.
Just to clarify I was having no signal problems before I dismantled the unit and in fact it was working exactly the same as my previous phone.
I actually don't know if the charging port part has anything to do with the signal antenna.
Any comments appreciated.
Hello,
I'm experiencing the same problems with my SM-G920F. After replacing the charging port the bottom mic isn't working anymore. I'm forced to call on speakerphone to get the sound to the other end of the line. The repair centre who fixed the phone said it could be because of a little off-point alignment when soldering the usb pin on the pcb. They also said that they experienced the same problems on different repairs for the S6.
Any thoughts?
Makzinations said:
Hello,
I'm experiencing the same problems with my SM-G920F. After replacing the charging port the bottom mic isn't working anymore. I'm forced to call on speakerphone to get the sound to the other end of the line. The repair centre who fixed the phone said it could be because of a little off-point alignment when soldering the usb pin on the pcb. They also said that they experienced the same problems on different repairs for the S6.
Any thoughts?
Click to expand...
Click to collapse
Please start you own thread on your issue. It has nothing to do with this thread. Mod please remove this post.
I think I know what happened. When I took off the back cover plate it was glued to what looked like a Printed Circuit Board antenna and it was yanked by myself. Anyone know where I can get these type of things to buy and repair ?
For some time I had problems with the mic, flickering display and non-responsive touch. I have opened the phone to reseat the flex connection and it has only worsened the problem: the display would not turn back anymore.
I have ordered a new flex cable and the problem persists... but I have a problem with diagnosis. The thing is the motherboard seems to work correctly, as I can find the phone with the Google site (although I cannot play the sound?). On the other hand, before the flex replacement the display would show colorful static, so it does not seem to be physically damaged by my repairs. What else could it be, then? For a while I thought that maybe it is the flex plug on the motherboard, but then the phone is seen as Nexus 5 through USB, so at least some of the data are going through from the USB port to the motherboard...
Without having another working screen, it would be tough to pinpoint the problem.
I do not have another working screen... or so I thought. I have connected the phone through HDMI to my TV and it seems to work, except it is very, very slow. This makes the screen issue more likely.
I agree.
Even a screen that shows scrambled images or static doesn't necessarily mean it's functional.
I've gone through this myself in trying to decide which to buy first: a screen or motherboard.
I have ordered a new display - no luck... It turns out it was the motherboard after all, more specifically, the port for the flex cable. It became more evident when part of the port fell off during the screen replacement...
JabberwockPL said:
I have ordered a new display - no luck... It turns out it was the motherboard after all, more specifically, the port for the flex cable. It became more evident when part of the port fell off during the screen replacement...
Click to expand...
Click to collapse
Sorry to hear that.
I recommend looking for a cheap Nexus 5 with a broken screen and working motherboard for a cheap price.