WiFi antenna pin broken - Nexus 7 Q&A, Help & Troubleshooting

Hello guys.
A few days ago, mi nexus 7 didn´t power up, tried pressing power and vol down for more than 30 seconds, nothing.
The screen turned on from time to time, but all i can see was some static.
After gathering some courage and reading a bit on the internet, i opened it and there it was, the battery plug was in an angle, doing a false contact.
I don´t know how that happened, it was working normally before, i didnt drop it, hit it, nothing.
Ok, then i push the plug and it fit, but mi finger slipped and broke one of the wifi antenna pin connector, it seems they are pretty weak...
I closed the tablet and it power up and works almost perfect, now the wifi signal sucks a lot, most of the time it can´t connect unless i´m really close to the modem/router.
What can i do? i still have the broken pin, can i solder it? or use something else to make the contact? return it to Asus for a fix? and i guess they will charge me.
Also i opened it again today, to take a picture, and i saw that the power plug again is slipping outside of his socket, i think there is a flaw in the design if the plug can´t keep is place...
Well, thanks in advance!!!
Laters

icedfirefly said:
Hello guys.
A few days ago, mi nexus 7 didn´t power up, tried pressing power and vol down for more than 30 seconds, nothing.
The screen turned on from time to time, but all i can see was some static.
After gathering some courage and reading a bit on the internet, i opened it and there it was, the battery plug was in an angle, doing a false contact.
I don´t know how that happened, it was working normally before, i didnt drop it, hit it, nothing.
Ok, then i push the plug and it fit, but mi finger slipped and broke one of the wifi antenna pin connector, it seems they are pretty weak...
I closed the tablet and it power up and works almost perfect, now the wifi signal sucks a lot, most of the time it can´t connect unless i´m really close to the modem/router.
What can i do? i still have the broken pin, can i solder it? or use something else to make the contact? return it to Asus for a fix? and i guess they will charge me.
Also i opened it again today, to take a picture, and i saw that the power plug again is slipping outside of his socket, i think there is a flaw in the design if the plug can´t keep is place...
Well, thanks in advance!!!
Laters
Click to expand...
Click to collapse
You can solder a wire from the broken pin directly to the WiFi antenna
Sent from my Nexus 7 using xda app-developers app

And for the battery plug, electrical tape is your friend.
Sent from my Nexus 7 using xda app-developers app

Thanks for the answers.
And... what about of the solder? i don´t know if it have the properties to transmit the wifi signal, maybe i put a wire or the pin back with solder, but if the solder doesn´t transmit the wifi signal i´m still screwed...
Sorry about my bad english, i tried my best, in spanish i could have explained it better....
Thanks!!

icedfirefly said:
Thanks for the answers.
And... what about of the solder? i don´t know if it have the properties to transmit the wifi signal, maybe i put a wire or the pin back with solder, but if the solder doesn´t transmit the wifi signal i´m still screwed...
Sorry about my bad english, i tried my best, in spanish i could have explained it better....
Thanks!!
Click to expand...
Click to collapse
Solder will be fine, I put solder on the pins of my one x to strengthen the connection and boost the signal worked perfectly.

Well, last night i put a small dot of solder and put the pin back in his place, i tried it in the same spot where yesterday i had no signal and now it works perfectly!
Thanks!!!

icedfirefly said:
Well, last night i put a small dot of solder and put the pin back in his place, i tried it in the same spot where yesterday i had no signal and now it works perfectly!
Thanks!!!
Click to expand...
Click to collapse
Glad it worked
Sent from my Nexus 7 using xda app-developers app

I've had the exact same accident, well except that i broke not one but TWO pins. So basically all should i do is solder them back just like that?

About the battery connector. Mine has a black tape over the connector. It's glued from the red yellow and black cables up to the motherboard socket where the pin connects. It may be a new revision because it's one of the latests

Broken wifi pin
FitAmp said:
You can solder a wire from the broken pin directly to the WiFi antenna
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
this happened to me aswell when I took it to my local repair store they said they couldn't solder it, if I had the tools I would have a go. Any ideas as to where else I could take it to get soldered. Thanks. Also I have another nexus 7 with which I have tried all the tricks ie: hold power on, check battery etc but still nothing absolutely nothing won't turn on or show any signs of life

FitAmp said:
Glad it worked
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
As a nervous amateur I would like to see this being done, what degree of heat and what size of solder wire etc are there any video footage available anywhere.

I fixed mine
actually mine also got broken ....
soldering didnt seem a good option for me
so i took one of the gold plated contact pins used for holding the sim card from an old phone and improvised ...
(you can use any of the gold plated contact pins found in old mobiles)
photos attached ...
i held it in place by insulation tape and some rubber stickers so that it wont move away ....
antenna works fine now ... full signal strength
the main thing here is to get the same material for fixing the antenna
different material would result in poor signal

therawkr92 said:
actually mine also got broken ....
soldering didnt seem a good option for me
so i took one of the gold plated contact pins used for holding the sim card from an old phone and improvised ...
(you can use any of the gold plated contact pins found in old mobiles)
photos attached ...
i held it in place by insulation tape and some rubber stickers so that it wont move away ....
antenna works fine now ... full signal strength
the main thing here is to get the same material for fixing the antenna
different material would result in poor signal
Click to expand...
Click to collapse
Thanks for that, what about a spot of superglue

Dec001 said:
Thanks for that, what about a spot of superglue
Click to expand...
Click to collapse
noo dont use chemicals on PCB !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Related

[REF] GT-I9300 Service Manual

Here is the Samsung Galaxy S3 (GT-I9300) Service Manual.
Please take a moment to read the notes and issues about this manual in this post.
For some reason Google didn't pick up that post, so I had to re-post here...
Now, if you are brave and happen to have a GT-I9300, you can still help us by posting some
internal pictures, to verify some issues in the manual. If they are good,
some of them will eventually become part of the SGS3 Hack-Pack.
Thanks and Enjoy!
I will be opening up the phone in the next few days due to me managing to damage the sim card holder section(not holding sim card) So at present i have got somthing putting pressure to keep sim card in place. I have a new sim card holder on order so when it arrives i will pull phone apart and take some pictures.
If you have any advice for me before attempting this please let me know via pm
Do you have any experience in this kind of electronics? I mean, are you planning to replace and solder the SIM card holder by yourself?
If you have not done this type of soldering before, I do not recommend it.
If you do decide to do it on your own, make sure:
You are working on a clean workspace
You are well grounded and not wearing wool clothes mixed with synthetic materials to avoid any ESD.
Have the right tools for the job.(Temp controlled SMD soldering iron + flux and acid-free lead-free SMD solder etc.)
A very steady hand with good eyes!
As for the pictures, keep the environment as bright as possible, preferably daylight. Try to keep your PCB on a bright or neutral background. (Bright cardboard is usually good.) Inspect your pictures and make sure you can read the text on the smallest chips. (The big ones we already know about, its the smaller ones that are difficult to navigate around.) Make sure the pictures are well focused.
Good Luck!
From looking at the pictures I was hoping I don't have to solder the sim card slot in. It looks easily replaceable as it looks like it's just a connector and not soldered
Replaced the sim holder. My camera wasn't good enough to get focus of the smaller chips however it is very very easy to take phone apart. And I guess Samsung are expecting issues with sim slot so they have fixed it using one screw and connected to board using a pull off connecter.
Just in case anyone else is interested the sim holder/sd holder cost me £20, delivered.
E:V:A said:
Here is the Samsung Galaxy S3 (GT-I9300) Service Manual.
Please take a moment to read the notes and issues about this manual in this post.
For some reason Google didn't pick up that post, so I had to re-post here...
Now, if you are brave and happen to have a GT-I9300, you can still help us by posting some
internal pictures, to verify some issues in the manual. If they are good,
some of them will eventually become part of the SGS3 Hack-Pack.
Thanks and Enjoy!
Click to expand...
Click to collapse
amazing !!!
Hi guys,
Here is my contribution to da community, hope so it helps.
h t t p s : / / docs . google . com/open?id=0B9lrf7AWQW7ETjRZTkFXb1luN0E
On image 20120616_150200.jpg you can see the region jumpers. The images are of a live demo unit - everything works besides the GSM/3G data. Haven't tested to see if the NFC is working.
The real unit has some more antenna connector. The demo one does not have PBA /printed board antenna/ the ANT102 and ANT103 as well as the capacitors and the coils u may seen them market in red cycles (ANT102, ANT103, C102, C191, L103, L102) there is no room on the MOBO for C192 /or at least I can't find its place/.
Thanks.
^^ Here is the link for above! (Thanks!)
Hi again,
I can confirm that the NFC is working on the live demo unites. According to the original S3 user manual the NFC antennas are build into the battery back.
I still can't figure out what is the "W2" antenna connector for. The Live demo unit has no connector soldered to the motherboard and also lacks the small PCB antenna with the white coaxial cable. Some ppl claim that the W2 is for WiFi antenna, but it is not, because I got great WiFi connectivity tho the lack of such PCB antenna. I can only confirm the WiFi working fine, under "G" type of WiFi networks. The openWRT firmware of my current router has known bug and I can't bring up "N" standard in air, to check if the PCB antenna is for "N" type of WiFi networks.
I also did some testing to see if the PCB is for GLONASS or GPS, and it seams that this PCB antenna with the white coaxial cable is not for any of these services. That's why I think it might be for wifi "N" or 3G data/networks. Donno if the 802.11n requires a separate antenna.
^^ Please post a link to a specific image, that clearly show the connector(s) you're talking about.
Hi I have a live demo unit to, so I think I can help about this =).
I can't show you the mainboard back because I' m new user... xD
I don't really know what you mean with NFC (sorry, I'm not really good with english)
But
W1 is a GSM external antenna conection
W2 is a wifi external antenna conection
And the white wired antenna is for wifi to.
After thinking a lot, if you conect an antenna to the GSM antenna conection (external or the internal lacked in Demo unit) you probably can't use phone function.
That function probably was crippled by software or because demo units don´t have imei maybe o.o.
The only thing I need to try is to connect a microsim to the phone
No one has any insights ???
johnny21a said:
No one has any insights ???
Click to expand...
Click to collapse
I have sgs3, international version on my workbench right now.
Don´t have any clue what could I share, so - if there is anything specific -- let me know. I will do my best..
BR
Samsung galaxy S3 i747
i have a Galaxy S3 SGH-i747m that has been water damaged and given to me so i could try and fix it. I can take pretty much any pictures you want, have openned the phone a couple times now to try and clean it up.
My problem is that the works well, it starts up, unlock the screen, plays sound...but the screen is off. Now at first when i was "playing" with it the screen would flicker on and off to show me the battery charging logo when it was plugged in. I've cleaned the phone and all flex connectors with some products. the phone still turns on and works but my screen is off. It detects the touch since i can unlock the screen ( it plays the water sound when i slide my finger on the screen) and speaker works when i boot it up (little booting sounds).
I was thinking there might be a small fuse on board for the screen backlight and that could be blown. I was also thinking my battery might be damaged and is not giving the phone the right voltage to the right connectors or something so i have ordered a new battery on ebay (under 4$) and am waiting for it.
Anyone has an idea to some specific things i should be looking for ? only thing haven't disassemble is the digitizer from the framebecause doing so would surely break the glass. It bums me up a bit since there are some electronics behind the frame that could have been damaged by the water that i couldn't see.
Bigred065 said:
i have a Galaxy S3 SGH-i747m that has been water damaged and given to me so i could try and fix it. I can take pretty much any pictures you want, have openned the phone a couple times now to try and clean it up.
My problem is that the works well, it starts up, unlock the screen, plays sound...but the screen is off. Now at first when i was "playing" with it the screen would flicker on and off to show me the battery charging logo when it was plugged in. I've cleaned the phone and all flex connectors with some products. the phone still turns on and works but my screen is off. It detects the touch since i can unlock the screen ( it plays the water sound when i slide my finger on the screen) and speaker works when i boot it up (little booting sounds).
I was thinking there might be a small fuse on board for the screen backlight and that could be blown. I was also thinking my battery might be damaged and is not giving the phone the right voltage to the right connectors or something so i have ordered a new battery on ebay (under 4$) and am waiting for it.
Anyone has an idea to some specific things i should be looking for ? only thing haven't disassemble is the digitizer from the framebecause doing so would surely break the glass. It bums me up a bit since there are some electronics behind the frame that could have been damaged by the water that i couldn't see.
Click to expand...
Click to collapse
check if you can see anything on the screen, use some extra light, torch for example.
if so - then its more likely that the LEDs in the display panel are damaged, since it flickered, as you said. also could be the driver circuit for backlight. Clean connectors for display panel, use magnifier, or better microscope to check for corrosion. use IPA to clean or scrape off the corrosion.
also - maybe this is not the right place to discuss this.
GL
Redrigon said:
Hi I have a live demo unit to, so I think I can help about this =).
I can't show you the mainboard back because I' m new user... xD
I don't really know what you mean with NFC (sorry, I'm not really good with english)
But
W1 is a GSM external antenna conection
W2 is a wifi external antenna conection
And the white wired antenna is for wifi to.
After thinking a lot, if you conect an antenna to the GSM antenna conection (external or the internal lacked in Demo unit) you probably can't use phone function.
That function probably was crippled by software or because demo units don´t have imei maybe o.o.
The only thing I need to try is to connect a microsim to the phone
Click to expand...
Click to collapse
I don't have he white antenna coaxial cable neigh the PCB antenna board that this cable is connected to but I have WiFi.
Could it be for WiFi N(150Mbps)?
Watter damage, LCD working/not working?
Bigred065 said:
i have a Galaxy S3 SGH-i747m that has been water damaged and given to me so i could try and fix it. I can take pretty much any pictures you want, have openned the phone a couple times now to try and clean it up.
My problem is that the works well, it starts up, unlock the screen, plays sound...but the screen is off. Now at first when i was "playing" with it the screen would flicker on and off to show me the battery charging logo when it was plugged in. I've cleaned the phone and all flex connectors with some products. the phone still turns on and works but my screen is off. It detects the touch since i can unlock the screen ( it plays the water sound when i slide my finger on the screen) and speaker works when i boot it up (little booting sounds).
I was thinking there might be a small fuse on board for the screen backlight and that could be blown. I was also thinking my battery might be damaged and is not giving the phone the right voltage to the right connectors or something so i have ordered a new battery on ebay (under 4$) and am waiting for it.
Anyone has an idea to some specific things i should be looking for ? only thing haven't disassemble is the digitizer from the framebecause doing so would surely break the glass. It bums me up a bit since there are some electronics behind the frame that could have been damaged by the water that i couldn't see.
Click to expand...
Click to collapse
I have identical symptoms with my i9300.
1. Water damaged
2. Dried in a can of rice etc over several days
3. Cleaned under sim card, lots of debris there, looked scorched, I cleaned with alcohol and a brush in an ESD protected environment.
4. Re assembled, the display briefly flashed on, and showed the expected "Battery is low, an d No Sim Card" then powered off.
5. Now after charging the battery and emplacing my sim card, I hear the proper musical tones when the phone boots but the screen doesn't light.
Where you able to get the screen working?
I am going to try a more throughal cleaning and I will try viewing the LCD under a more power full light.
I too worry that just getting the LCD screen replaced might not work; the screen may be fine but the mother board LCD power supply might be at fault...
I will keep you posted and keep an eye on this forum to find out how to fix this.
This thread has served its main purpose.
OT discussions are prevalent.
Thread Closed!

[UPDATE]Help with small hardware hd2 fixes

Check latest post for latest info!
Ignore post #2 since it's the answer to my past question.
I'm owner of HD2 EU, i got my screen broken.
I gave phone so that it would be repaired > after it was repaired flew away to other country.
Anyway few things don't work after they have changed the screen:
1) WIFI signal is really really low(need to hold phone ~10sm close to other phone/router in order to receive signal
2) GPS is not working(checked both android/wp7 with various tweaks(f.e. gps.conf/roms....)
3) Volume- button is not working(it was working, but it broke few weeks after the screen was changed), mb there's a way to just remove the volume rocker and click the buttons with something else f.e. small pencil or smth, since i'll need those buttons only when i rewrite software, atm i can't do that due to not working volume- button)
4) 5main buttons(call/home/win key/back/call drop) are "recessed"(hopefully google translated it the right way - incase it didn't: i mean they are slightly badly positioned: towards the one side(left) they're positioned fine, towards the right side they're slightly too deep into the screen).
Can i fix any of these issues at home myself and any thoughts what exactly needs to be checked/possibly/for sure replaced?
Fixing this phone by a repair man would cost way too much, i'd rather change the phone, anyway fully working hd2 = i'm really happy.
Between i checked tutorials on disassembly(f.e. pocketno*.***/hardware-1/official-htc-hd2-disassembly-assembly-training-videos-leaked ) - everything seems fine, but the thing is, that it shows full disassemply of all parts, not sure exactly what i need to do for checking f.e. the wifi/gps cable only.
Edited:
There are 2 brass clips on the top right of the motherboard which attach to the rear case antenna. Make sure these brass clips are correctly functioning and working. There are 2 for the gps at top left big ones from memory then there are 2 at bottom for radio antenna and two at top right for wifi.
Click to expand...
Click to collapse
That's what i found from a topic of guy with similar story and wifi not working - guys adviced to check these parts. Is it hard to reach em? Also what can be used instead of "flange plastic stick" and also what can be used a screw driver of those special hd2 screws?
Current thoughts:
Solutions:
1) WIFI - i bet the cable is not fully connected, just slightly so it results in low electric signal = low wifi signal received by motherboard. I saw where those 2 connectors go and seems easy to reach that spot
2) GPS - the cable is not connected at all, i saw one of 2 places where the connector goes, one on motherboard top, and 2nd - i don't know?
3) Not sure if can be fixed, mb replacement part is required, not sure about idea with pen or smth like that.
4) Seems easy to be fixed, anyway it seems also that it's the hardest place to be reached, since i need to disassemply the motherboard fully, mb any though of how to do this faster?
Extra: what if i'll use blunt table knife instead of "flange plastic stick"?
Edit2: forgot to mention, when i click the volume- button - i can't feel any click(as there should be).
Without the volume down rocker/having winmo installed, you can't get into the boot loader, and without being able to get into the boot loader, there is no way to flash a radio (or even anything else ).
Sent from my HTC HD2 using XDA Premium App
eXtremeLT said:
That's what i found from a topic of guy with similar story and wifi not working - guys adviced to check these parts. Is it hard to reach em? Also what can be used instead of "flange plastic stick" and also what can be used a screw driver of those special hd2 screws?
Click to expand...
Click to collapse
No, its not hard to reach them. You can use a guitare plectrum http://www.amazon.com/Planet-Waves-...503326&sr=8-1-spell&keywords=guitare+plectrum instead of "flange plastic stick".
For HD2 screws you need a torx screwdriver T5.
eXtremeLT said:
Current thoughts:
Solutions:
1) WIFI - i bet the cable is not fully connected, just slightly so it results in low electric signal = low wifi signal received by motherboard. I saw where those 2 connectors go and seems easy to reach that spot
2) GPS - the cable is not connected at all, i saw one of 2 places where the connector goes, one on motherboard top, and 2nd - i don't know?
Click to expand...
Click to collapse
The second one goes on the little GPS board.
eXtremeLT said:
what if i'll use blunt table knife instead of "flange plastic stick"?
Click to expand...
Click to collapse
You will have a few scratch in backcover. I would only use plastic parts to open the phone.
eXtremeLT said:
Edit2: forgot to mention, when i click the volume- button - i can't feel any click(as there should be).
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=28796701#post28796701
Wohoo! Fixed the volume- button myself, adjusted that little metal part in the spot where the volume- presses.
Anyway:
The black cable(pretty small compared to white1) i think so it's wifi/bluetooth - is ruined. One part of it is fine, but the other1 hasn't got the connector to the board, it's just tearn off(by awesome people who changed my screen). So i'll try to buy a new cable > change it > hopefully wifi will work(btw when the cable is fully disconnected, it works with that small ~10sm distance).
GPS(i guess it's the white cable):
the one side of the cable(on top of the gps antenna board) is connected fully, anyway i can't access the second end of the cable(on the backside of motherboard. Any suggestions of how to do that? I know how to do that with all phone disassembly, anyway maby some parts can be skipped?
UPDATE:
I've done something to my camera, after i fixed volume button, and removed the black cable(since it wasn't connected) - my camera is not working on any roms, camera apps just crash>quit, what cable/part do i need to check? :S i haven't disconnected any wires, only unscrewed first 4 screws near the battery > removed the backpart of the phone to access wires > removed black wire > fixed volume button :S
UPDATE2:
Disassembled and reassembled the phone - at magically the camera works I don't know what was the problem :S

Fixing Charging Issue [Solution]

At first my Fire wouldn't charge unless it was placed in a particular way, then it stopped altogether. I pronounced it dead, and left it stowed away for a few months, but then decided to try and fix it. I think this guide may be useful for anyone who wants to fix a kindle with dead charging. Note that you may damage your kindle in the process so if you are still under warranty, use it.
1. Take off the back cover. You may need to use a guitar pick or something similar.
2. Take off the two battery leads. One has a locking mechanism which needs to be lifted before the ribbon cable can be taken out.
3. Take out all screws connected motherboard to rest of device. There are connections underneath the board so be careful when lifting it.
4. When I lifted it, I found the USB connector had broken off the entire board (if it was even attached in the first place) and this was obviously causing the problems, as the USB connector could now only connect to the motherboard if pressure was applied so that it was being held on somehow by it. To fix this, I could have tried to solder the tiny USB connections onto the board, but instead I used a different way which is working perfectly for many weeks now.
5. Get a rubber band and tie a not in it numerous times until the knot is about 3-4mm thick. Cut off remaining rubber band and superglue the knot onto the bottom side of the USB connector (the side that faces the display when assembled). Then insert the USB connector into it's little holder under the board, with the rubber band firm beneath it and replace the motherboard. Redo all the screws, reconnect any connectors you've disconnected (you may have had to disconnect some to remove/move the motherboard - always undo battery cables before you work on the innards of any device).
6. If you've done this correctly, the round rubber band knot should press the USB connector continuously on to the board. Test using your stock charger before you put it back together because the back cover is pretty hard to get off.
7. Replace the back cover and enjoy!
Notes: My rubber band knot was actually a little too large, which meant that to connect the USB plug I had to press the kindle together to insert the cable, but charging is reliable and working so far, so I'm happy about that.
How about using E-Tape instead of a rubber band?
Sent from my Amazon Kindle Fire using xda app-developers app
The reason I used rubber band was because it pushed the connector against the severed contacts on the board. I doubt that simply sticking it on with any sort of tape would work as effectively.
Sent from my Amazon Kindle Fire using xda app-developers app
Do you know how to solder? I fixed mine that way.
Sent from my kindle fire
Anthony96922 said:
Do you know how to solder? I fixed mine that way.
Sent from my kindle fire
Click to expand...
Click to collapse
Yes, but I am away from home at the moment so I didn't have access to one.
Thanks for posting this at this time! I am currently doing an engineering fair and bought a soldering iron for it. I will try the rubber band way and then try solder if it doesn't work. Thanks again!
Vlasp said:
Thanks for posting this at this time! I am currently doing an engineering fair and bought a soldering iron for it. I will try the rubber band way and then try solder if it doesn't work. Thanks again!
Click to expand...
Click to collapse
No problem! Glad to be a help
Can you take a picture?
So, I have this kfire that didn't charge very well and the usb connection with the PC needed a lot of fiddling around, when I got an n7 charger it charged perfectly, maybe the kfire charger is defective.
Ill try to get a picture later.
Sometimes the charger is the problem so make sure you check that first before you open up your fire.
Sent from my nuclear powered toaster.
jji7skyline said:
Ill try to get a picture later.
Sometimes the charger is the problem so make sure you check that first before you open up your fire.
Sent from my nuclear powered toaster.
Click to expand...
Click to collapse
Attempting this now. Do you have any pictures?
Bump for noobs and others.
Can you post a picture of the rubber band and that other think together I don't get what your saying are you saying tie the rubber band it is that measurement you told is to be and but it under that other thing so it pushes against the motherboard and forces it to be there can you please explain that part a little more explaining please thanks

LG D802 Bad wifi sensitivity a

Two days ago my battery was extremely drained, i followed a video tutorial on YouTube to fix it by removing the battery and put it back, but after doing this my wifi became so bad! for example, if there's 10 networks nearby i only could see 4 of them with its half strength.
any help please?
Check wireless antene (white one i guess). Those cables are very weak be careful.
khanjui said:
Check wireless antene (white one i guess). Those cables are very weak be careful.
Click to expand...
Click to collapse
Can you explain more about it or where i can find it?
Yes please do, i had a look at mine but its still weak and all my other things connect and are strong, just this bloody phone
carpon said:
Can you explain more about it or where i can find it?
Click to expand...
Click to collapse
https://www.ifixit.com/Teardown/LG+G2+Teardown/20485
I had same problem too. I chanced cables but didn't work. So I'm not sure is it works. I sent my phone to guarantee and they fix it, don't know how. Black cable is cellular antenna.
Sent from my LG-D802
i checked them out, both are well connected!
may the modem version or the baseband affect the connection?
carpon said:
i checked them out, both are well connected!
may the modem version or the baseband affect the connection?
Click to expand...
Click to collapse
I don't think so. Looks like hardware problem i guess. Compare with another phone on same location, check signal quality.
Perhaps when you removed the wires, you damaged the connector on the wire itself or the mother board.
Hopefully its the wire which would be a quick, easy and inexpensive fix.
To reach the battery you have to undo the rear plastic housing, unscrew the MB cover, unclip a few connectors remove the power/volume ribbon assembly and disconnect the antenna wires.
It may be worth taking the entire phone down to the MB and redoing the process one more time.
Take your time and make sure everything is connected one last time before you power the phone back up again.
There's a good chance something could have been overlooked.
20 minutes of your time could save you some heartache and pain

LG G5 GPS FIX (Soldering skills needed).

Hi to all,
sorry for my english but i gonna try to explain how to fix GPS in LG G5:
1. you need to unsoldering 2 mhf rf connectors like you see in pic1.
2.after that you need to solder 2 wireup cabels like you see in pic2.
3.in the end this is how it gonna look, like you see in pic3 and pic 4.
Good luck!
Where to solder the two cables on the other side?
Inviato dal mio LG-H850 utilizzando Tapatalk
No where, they just attached to the frame with duct tape.
Can you explain a bit more, what are pic 1 and pic 2 are are you removing whatever is there. It look like pogo pin not sure...
In pic1 you see mhf connectors\pogo pins as you call it on the board as they comes from the factory. in pic2 I unsoldered them, so this is how the board looking like after I removed them. I marked with the yellow dots where I solder the wireup (wireup is marked in red).
I understand now that you are using a thru hole RF connector and place a wire that act as an antenna, I wasn't able to locate where is the normal antenna and why is it not connecting right at the first place. it seem that the RF connector is not used normally so it is probably there only for factory test purpose from the ifixit teardown pictures.
https://d3nevzfk7ii3be.cloudfront.net/igi/KEVL1LUslTEBSoVO.huge
What kind of improvement did you get on the GPS, mine is working but not great so I am tempted to fix it but I am still not understanding what the fix does for now as I have to extrapolate that you are actually making an antenna with the wire. Lenght should matter quite a lot then, did you make a few test with various length to came up with the fix you documented.
There's another thread with a gps fix, but he's only putting more spring into some pins this fix may be better on the long run!
Thanks for the explanation
Before fix I barely get gps fix, I needed to wait about 5 min to get fix, after that the gps was not stable at all, it always get 5 satellites in max.
After fix I get gps fix after 10-15 sec, and I always get between 19-21 satellites, and gps works stable without any disconnections.
About the wire length, I didn't tried various lengths.
Getting yourself familiar with the insides always a good ideal. There's a good app in the play store called 'iFixit'. It's helped me with a lot of different devices opening up.
Sent from my LGE LG-H830 using XDA Labs
How bout does the iron need to be? What kind of solder should I use?
jkieffer46 said:
How bout does the iron need to be? What kind of solder should I use?
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Click to collapse
The iron temperature actually depend on the solder you use, you ideally need something that melt fairly low like 63/37 alloy 63/37 Sn-Pb used principally in electrical/electronic work. 63/37 is a eutectic alloy of these metals, which: has the lowest melting point (183 °C or 361 °F) Other eutetic alloy without lead may be availlable in your area. You also need the type with Rosin flux not acid or water washable.
You will also need a small tip at the end of the soldering iron and a good magnifier, but working with multilayer PC board with no experience can easily lead to catastrophic failure.
I would recommend you start with easier mods than this one if you are not familiar with soldering and general soldering on PCB, this is a fairly easy thing to do for someone familiar with this type of work as the hard work is to figure out what to do
Maybe find a local cellular repair shop and ask them if they can do it for you.
@slavush - thanks for the info here. Can I ask how you determined which connectors were related to GPS? Any documentation about the PCB or similar?
There are different people mentioning different pins all over the G5 for GPS. I have opened up mine 3 or 4 times now, each time finding success for a short period. So I failed to determine which were actually the ones to focus on.
In your opinion, instead of welding the cable, would it be possible to plug it into the connector hole?
I tried to put the cable in on the phone as in the picture without connecting it. But when the cable is inside the phone does not turn on.
My gps does not work. It does not even hook up to a satellite
slavush said:
Before fix I barely get gps fix, I needed to wait about 5 min to get fix, after that the gps was not stable at all, it always get 5 satellites in max.
After fix I get gps fix after 10-15 sec, and I always get between 19-21 satellites, and gps works stable without any disconnections.
About the wire length, I didn't tried various lengths.
Click to expand...
Click to collapse
How about now? Is this fix still working?
Also curious about. Any fix that really works?
I already fix my GPS without soldering.... But in order to fix it you should disassemble the G5 and look for 3 pins....
Sent from my LG-H860 using Tapatalk
I don't think the 3 pins mentioned are concerned with the gps. I tried myself lots of time to raise them up and the gps for a while worked, but, now i broke those 3 pins. No more volume...but gps works...extremely bad and slowly as before. If you look at the flex
you can see it is only related to the volume buttons. So...I don't have any idea.
About this soldering fix.....why shall I have to unsolder those two things?
the 3 pin worked for 6 month... and never worked again, 3 is crashed a bit now, also, i added aluminum foil to the 3 min, so volume up down still work.
I was going to try this fix mentioned here, untill i open the phone and found how Small the POGO pin is.
seems quite hard to remove as there is so many electronic around it.
i am going to just Plug in the cable and TAPE it in place and see if it can work this way..
Update:
Interesting enough, the phone refuse to turn on (with the 2 cable TAPED over the pogo pin. ) it just wont turn on.
Now, i removed the wire from lower pogo pin, with the upper remain. and the phone can turn on.
will go test the gps and see
@slavush, I see that you are from Israel. Any chance you're from Tel Aviv? I could use some help with this.
@scoobychau, did you get success in gps signal improve?
How did you it ?
scoobychau said:
the 3 pin worked for 6 month... and never worked again, 3 is crashed a bit now, also, i added aluminum foil to the 3 min, so volume up down still work.
I was going to try this fix mentioned here, untill i open the phone and found how Small the POGO pin is.
seems quite hard to remove as there is so many electronic around it.
i am going to just Plug in the cable and TAPE it in place and see if it can work this way..
Update:
Interesting enough, the phone refuse to turn on (with the 2 cable TAPED over the pogo pin. ) it just wont turn on.
Now, i removed the wire from lower pogo pin, with the upper remain. and the phone can turn on.
will go test the gps and see
Click to expand...
Click to collapse
Hello scoobychau,
My LG G5's 3rd pin is also crashed, broken, destroyed. Can you explain me more about how you fixed it with aluminium foil ? It's my girl friend's phone, and I am so sorry having broken its volume buttons' spins or/and GPS feature.
Thanks a lot for your answers.
Concerning the soldering, I am so bad that I can't imagine doingit myself...

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