Hi there.
I have a G5 as my backup phone. Recently, I've replaced the fingerprint scanner (it stopped working as a button, no cleaning would help, so I've bought new part online and replaced it), and after that I have no signal (-1dbm 99asu). Not even an alarm call is possible.
From my research, the antenna module is the bottom slice of the phone, you attach the battery to (one with mic, USB-C and bottom speaker)? I have both original bottom part and a Cam+, no signal on either of them. Where else should I look for any damage, that would lead to my problem - no signal at all?
I have a similar problem. The signal is very low everywhere, I tried to clean all the contacts between the bottom part and the phone, and nothing changed.
Me too i have a problem with the signal since display change. How can i get it fix. The phone has very low signal and it has network only on 3g on LTE it hasnt any network and 2g signal doesnt have.
Изпратено от моят LG-H850 с помощта на Tapatalk
Well, the pcb or mainboard has a small flex type antena on the back of it, it's black and has some lettering on it and it connects using coaxial type push connectors, also the phone connects to the aluminum case via some exposed pins on the mainboard, the case acts as an antenna also, if you need pictures I can take some tomorrow, I work in a cellphone shop and I fix an LG g5 almost every day, we have some main boards laying around, you most likely bent one of the pins that connects to the case
nah i got the same problem here after disassemble the phone. I already clean all things that contacted with the backdoor or with mainboard but the problem still there. Only got 0-1 bar of 4g even it near the tower until it change to 3g with the same condition. but the 2g signal is always full bar.
Jc_master said:
Well, the pcb or mainboard has a small flex type antena on the back of it, it's black and has some lettering on it and it connects using coaxial type push connectors, also the phone connects to the aluminum case via some exposed pins on the mainboard, the case acts as an antenna also, if you need pictures I can take some tomorrow, I work in a cellphone shop and I fix an LG g5 almost every day, we have some main boards laying around, you most likely bent one of the pins that connects to the case
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Click to collapse
so is it located on the mainboard or part of screen? could you take some picture of it :crying:
Jc_master said:
Well, the pcb or mainboard has a small flex type antena on the back of it, it's black and has some lettering on it and it connects using coaxial type push connectors, also the phone connects to the aluminum case via some exposed pins on the mainboard, the case acts as an antenna also, if you need pictures I can take some tomorrow, I work in a cellphone shop and I fix an LG g5 almost every day, we have some main boards laying around, you most likely bent one of the pins that connects to the case
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Click to collapse
maybe post foto where is gsm ahtenna?
Related
Does anyone know what the connector for external antennas on the back of the wizard is called? I want to build a custom antenna that I can embed into my clothing to improve reception at school. I can't use a regular antenna since phones aren't allowed to be used at school.
HDR said:
Does anyone know what the connector for external antennas on the back of the wizard is called? I want to build a custom antenna that I can embed into my clothing to improve reception at school. I can't use a regular antenna since phones aren't allowed to be used at school.
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Click to collapse
The antenna part is:
P/N:36H00341-00M "Antenna Pre-Assy, AMPHENOL, GAN40023, PRODIGY"
I am attaching 2 pictures, the first you can see the Antenna Assembly (silver chunky thing above the case) and a second picture of the main board. You can see the brass connector just above the bar code.
This connector type is an AMPHENOL (brand) FME...at least it should be. One of these days I'll get and antenna.
--M
PS when you get the antenna, get a connector that at least has a 90degree bend in it. You might want to try http://www.wilsonelectronics.com
I have one
I grabbed one of those adapters, unfortunately, I cannot remember where. One end (FME) fits into the back of the phone with the 90 degree plug, the other end on mine is a TNC connector. I got that as I had a couple of spare antennas that use TNC.
It does improve the reception. I use the antenna's in the vehicle when on the highway to maintain reception. (I have no problems in the city)
Depending on your device, you may want to update the Radio ROM, if you haven't already. This doesn't flash/reset your phone, but does update the radio. This might resolve your problem without spending any money.
I am using the 2.47.11 Radio ROM and it did make a difference. My device is the T-Mobile MDA (Wizard). In a particular location, where I would get zero reception, I now get one bar...and that's all the difference I need.
P.S. If you do get this adapter, be careful when plugging it in and during use. Remember that FME connector is attached to the circuit board.
Hello all.
While I was taking my HD2 apart to replace a cracked screen (glass digitizer) I accidentally broke the connector off one of the wires. The wire is black and a few inches long with a silver and round press on connector on each end. It attaches to the board that houses the vibrator motor and runs down the right side of the phone (if you were looking at it face down and partially disassembled).
Unfortunately, I lost the metal piece that broke off the wire (the thing is tiny!), so I can't just solder it back on. Any idea on where I can buy a replacement? I've spent about 6 hours today on ebay and google to no avail. Searching for "HD2 black wire" and anything similar is hardly efficient, but that's all I know about it.
Any help appreciated.
Thanks,
Chris
Good question, I think I damaged the cable to the volume buttons so it would be cool if someone has an adress where we can get spare parts except LCD and Digitizer..
this guy on ebay seems to be selling an HD2 in parts. you might find what you need here:
http://stores.ebay.co.uk/Right-Click-Enterprises/_i.html?_nkw=hd2&submit=Search&_sid=131407386
Thanks, I sent that guy a message and hopefully it'll work out.
Anyone else have a source?
connector of my hd2 is also broken HTC says that the mainboard must be change and I have to pay € 230 because that is my responsibility
I think you have damaged your coaxial cable connector for wifi and bluetooth. Google will help you perhaps.
I believe that my wifi/bluetooth cable is broken, as I have no wifi or bluetooth signal since dropping my phone as reported in a previous post of mine. Can anybody advise me on the difficulty of undertaking this repair myself, does it involve complete disassembly of phone, any soldering etc. If this is the case I don't feel confident enough to do this so does anybody know of someone who does this sort of repair, I have found the cable on e bay for £7 and it looks like it has push on connectors ?
if the connectors on the boards are not broken then all you need is the coaxial cable with connectors on the two end. you need not disassemble the whole set, just open the back cover, connect one end of the cable to mother board and other end to the rigid flex board and that's it.
WiFi and Bluetooth not working
raincybercafe said:
if the connectors on the boards are not broken then all you need is the coaxial cable with connectors on the two end. you need not disassemble the whole set, just open the back cover, connect one end of the cable to mother board and other end to the rigid flex board and that's it.
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Click to collapse
Do you think that this is my problem as since I dropped my HD2 I have no wifi (unless sat ontop of router) or bluetooth or fm radio, is it easy to get to the coax cable by removing back cover, whereabouts is it ?
raincybercafe said:
if the connectors on the boards are not broken then all you need is the coaxial cable with connectors on the two end. you need not disassemble the whole set, just open the back cover, connect one end of the cable to mother board and other end to the rigid flex board and that's it.[/QUOTE
Fixed it, opened up phone and spotted that at one end of the black wire the connector was not pushed onto the motherboard securely, I pushed it home and hey presto, wifi and Bluetooth now working, phew, Thanks for your help !
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I noticed a weird connector at the back of the device, I dont have a way to picture it at the moment but I found it on the internet.
Its under the cover in the red circle I draw,
Do any of you know what its good for?
eranyanay said:
I noticed a weird connector at the back of the device, I dont have a way to picture it at the moment but I found it on the internet.
Its under the cover in the red circle I draw,
Do any of you know what its good for?
Click to expand...
Click to collapse
I think it is for attaching a stylus.You just loop the thread through it and close the cover.
It's meant for a wristband. You can buy the accessory, loop it through that hole, and then close the back cover (so it never falls off).
Are you sure about it...?
I think you're wrong,
the wristband/small things you put on your phone like small dolls is the yellow square
this one is something different.
It its a connector for an external gsm antenna. However be warned, do not plug any thing in to it as others have reported this will disable the internal antenna and you will not get a signal afterwards without a visit to a service centre or some soldering.
http://forum.xda-developers.com/showthread.php?t=1273292&highlight=antenna
Sent from my GT-I9100 using Tapatalk
I've seen that type of connector on other phone's in the past. I always thought it was for an external antenna. I'm not sure though.
Edit: mrm1 just beat me to it ^^^
That was my first impression, after seeing a similar connection for the wifi antenna in laptop's hardware..
Thanks, and of course, Im not planning to connect anything to it anyway
I've been working on this problem off and on since the summer and have read through pretty much everything I can find (some similar posts with no resolution). After about 6 months of using a Galaxy S6, I want my Xperia back.
Long story short, I replaced the screen on my Xperia Z3V a while back. I'd already paid Sony for one screen on this phone and didn't want to do it again (wish I did). After I replaced the screen, the phone worked fine except I no longer had "proper" cell/4G signal. When I say "proper," the signal randomly appears (4 bars/-87dBm) and randomly disappears (-120dBm). I can't find any pattern to this. In some places with very good signal such as the Verizon store, the phone will try to activate but will fail to make calls or receive texts after.
List of what I've tried so far:
- factory reset
- new SIM from Verizon
- new antenna cable (blue coax cable, clips into side of phone)
- new antenna
The part that really confuses me is that disconnecting the blue coax cable has no effect. I.e., if I disconnect the cable while the phone claims to have signal, nothing changes. My assumption is that signal would instantly drop.
Is there anything worth trying before writing the phone off?
Possibly related... There is a white putty along the bottom of the battery that turns into a flat white cable which runs up the length of the battery to the WiFi antenna. Can anyone tell me what this might be? I can't find pictures describing this phone anywhere.
Thanks in advance.
I have a Z3 and the blue coax cable is the one for signal, in this case it seems either it is broken or something along those lines, as I have the same problem in my z3 but I know why because I had broken the coax connector so the signal issue. Try checking the antenna at the bottom or the connector on the motherboard itself
Neelkanth said:
I have a Z3 and the blue coax cable is the one for signal, in this case it seems either it is broken or something along those lines, as I have the same problem in my z3 but I know why because I had broken the coax connector so the signal issue. Try checking the antenna at the bottom or the connector on the motherboard itself
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That's true. You probably damaged the coax connector on either the motherboard or the loud speaker side. The proper procedure for removing the blue cable is holding down the socket with one tool and removing the cable with another. And best is to remove the speaker module without touching the cables...
Hmm... I did not realize the coax cable was quite that fragile. Lesson learned. It seems impossible to find brand new replacements for this particular phone, I wonder if Z2 or Z3 parts would fit.
The old iPhones I've successfully replaced screens on seem like toys next to the Sony...
Hello,
A few weeks ago, I replaced my screen because my smartphone had fallen. When disconnecting the antenna cable, the coax connection on the PCB was broken. So I ordered a new PCB. However, with the new PCB, I no longer have any coverage. Is it possible that the PCB is not suitable for the European / Belgian network (GSM/Edge/3g/lte). I also noticed that the PCB I received differs a lot from the design that was in my smartphone. The PCB under the smartphone is the defective PCB, the mounted PCB is the PCB is the new PCB. You can find a picture here: https://imgur.com/Wzmq0p0 When my broken screen was still on the smartphone, I had full range and there was nothing wrong with the network. The connections of the cable is also not damaged: https://imgur.com/H4WkFmA Screenshot of no coverage, but SIM card data that is read: https://imgur.com/tkOhXI9 I tested 2 sim cards that I in the Pocophone. Both are from another provider. Neither got a signal. In my other smartphone, both SIM cards were connected to the network and worked as expected. Does somebody know if I ordered the wrong PCB foe Belgium?
Are you certain that the antenna cable is good?
If it's damaged the sim should show up but with no network at all. (Exactly the behavior that you're having)
---------- Post added at 11:30 PM ---------- Previous post was at 11:26 PM ----------
The chips' small differences are normal between an aftermarket and an original imo
ablivian said:
Hello,
A few weeks ago, I replaced my screen because my smartphone had fallen. When disconnecting the antenna cable, the coax connection on the PCB was broken. So I ordered a new PCB. However, with the new PCB, I no longer have any coverage. Is it possible that the PCB is not suitable for the European / Belgian network (GSM/Edge/3g/lte). I also noticed that the PCB I received differs a lot from the design that was in my smartphone. The PCB under the smartphone is the defective PCB, the mounted PCB is the PCB is the new PCB. You can find a picture here: https://imgur.com/Wzmq0p0 When my broken screen was still on the smartphone, I had full range and there was nothing wrong with the network. The connections of the cable is also not damaged: https://imgur.com/H4WkFmA Screenshot of no coverage, but SIM card data that is read: https://imgur.com/tkOhXI9 I tested 2 sim cards that I in the Pocophone. Both are from another provider. Neither got a signal. In my other smartphone, both SIM cards were connected to the network and worked as expected. Does somebody know if I ordered the wrong PCB foe Belgium?
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Click to collapse
some blue resistor is missing in new one, i think!
The antenna was damaged a bit, but i also ordereda new one with the damaged one worked.
Because the antenna cable of the pocophone was out of stock, i ordered another one from xiaomi. It was a little bit longer but, still the same issue
ablivian said:
The antenna was damaged a bit, but i also ordereda new one with the damaged one worked.
Because the antenna cable of the pocophone was out of stock, i ordered another one from xiaomi. It was a little bit longer but, still the same issue
Click to expand...
Click to collapse
In the pic it seems like the antenna cable is a bit smashed by the bezel when it was screwed together. You could try with another cable and test for signal before reassembling the phone.
I made 2 movies to show that there should be a difference and that the issue is not the antenna cable.
In this movie, I installed the new PCB and there is no networkconnectivity:
HTML:
https://youtu.be/0xNUxfh3CXM
In this movie, I installed the PCB without COAX-connection for the antenna, but just tape. I'm using is now with tape for about 5 days:
HTML:
https://youtu.be/NIRFgzkucUk
Does anyone have an idea, where to fine the correct PCB to use in Belgium (Europe)?
I contacted the company, but they only say they buy it from "Iparts Buy".
Any help would be appreciated.
Did you ever get this issue resolved. I'm having the same problem
Hey
Here is a link to a trusted shop in Germany (mobiltec24). I can't post a link. I'm a new member.
I have the same problem as you. I am also looking for a solution. I buy a pocophone without mobilenetwork. I can't unlock the bootloader without SIM Card.
Having the same issue, any update ?