Related
so i cracked my LCD a couple weeks back..today i recieved a replacment LCD from htclcd.com ...followed the instructions from the site..now i turn on my phone..and everything works perfectly..exept it cant find a signal anymore...seems to recognize the sim card...everything else works fine..just no signal...where could the problem lie? any suggestions? thanks in advance!
I would be very suprised if the lcd has caused this issue, have you tried a manual network selection yet?
It is likely that you have accidently disconnected or damaged antenna or connection to the antenna. I'd try to disassemble, examine visually that all parts are OK and reassemble the phone.
thats that i was thinking..but i dont know where the antenna is located in the phone so i dont even know where to begin to look
Hi stolli,
please let me know if you could repair your phone I have the same breakdown for the same reasons.
thank you
is there a way to replace the keyboard or fix the problem somehow?
It may just be the Keyboard FPC connector is not inserted firmly enough. See pages 21 and 33 of the manual.
www.mikechannon.net
Mike
Hi, it seems that all lugs looks good, but it is not easy to see if contacts are OK, Wlan, GPS, Bluetooth are OK but not GSM
I tried to connect via VOIP, voip is connected but i always have no services??????
green led is flashing, is it for GSM, wifi or dial?
stephlight said:
Hi, it seems that all lugs looks good, but it is not easy to see if contacts are OK, Wlan, GPS, Bluetooth are OK but not GSM
I tried to connect via VOIP, voip is connected but i always have no services??????
Click to expand...
Click to collapse
did you insert the lugs from the battery side first? the contacts are the gold pieces...if they are intact they should be fine..when you put the tilt backtogether did you put it together firmly, tighting all the bolts? also make sure flight mode isnt on
stolli said:
did you insert the lugs from the battery side first? the contacts are the gold pieces...
Click to expand...
Click to collapse
Yes, I also slightly recovered "lugs" that looks a bit twisted.
Do you with one is used for GSM?
stolli said:
also make sure flight mode isnt on
Click to expand...
Click to collapse
I changed several times mode phone to flight to test the line but still nothing.
I will work in Paris tomorrow, I'll test the gsm signal will be better , but on my other phone with the same Sim all is good.
Thanks.
the reason why the lugs are neceassy is to hold the casing firmly down so the gold connecters touch...make sure that the casing is tightened firmly down..and maybe lift the gold connecters on the main casing a little bit so they stick out more (thats what i did)..make sure not to break them tho..
The problem must come an other part, the lugs are good.
I had great difficulty connect to GSM in Paris yesterday.
I have disassembled it again checked and reassembled but nothing new.
thanks for your help.
Hello
I killed my Kaiser by flashing a Touch Diamond ROM to it.
Sent it to repair service and they say the Mainboard needs to be replaced,but the price for repair is ultragious .
I realy need the device,it was a big help in my confused life style.
Can anyone tell me how can i fix it myself. Or where i can buy a mainboard. Or where can i send the device to repair for a cheaper service?
Thanks in advance for all your help guys.
Some of the keys on my keyboard are dead, any clue? Disassembled several times with no luck...
Doh... looks like the keys are gone.
WOW! It works, when I gave up! Ironic! DD
Ok, so if there happens to be others with the same issue.
Make sure when you connect the golden keyboard connector that the black thin line on it gets positioned exactly where the brown lock ends.
it all works totally fine.....
EXCEPT the e and w keys on the keyboard don't work
i have an AT&T tilt and was hoping someone new how to reprogram the button functions
i want to take the w and e keys and swtich them with the "ok" and "tab" keys on the bottom of the keyboard....
just totally switch the two buttons so that i can use the @ and ? signs when i press the "Fn" key
i never end up using the tab or ok keys on the keyboard anyway
i was hoping to make cab i could install like the tilt keyboard fix cab
only thing is
i don't know how to reprogram the keys or make a cab
any help would be greatly appreciated please pm me
UPDATE i just looked at my keyboard and was thinking to switch the w with the start menu key and the e with the tab key
thanks guys
Good to hear that your device is still (mostly) working after beeing dropped into a lake.
What did you do afterwards, how did you dry the device?
best thing to do is lay it out on a towel and leave it alone near a draft for acouple of days. let it totally dry out. if that dont work then you got some cleaning to do.
drying out
good 2 here phone still works, im guessing, but it sounds like u may still have some water under those keys (tiny droplets). The best way of drying a wet phone (or any gadget)(disasembled?(taken apart!)) is to place in as sealed container (airtight) filled with rice. The science is the rice will naturally soak up all the moisure around it. I've never tested it first hand but sounds like it should work. I think leaving it for 3 days in the rice should make it work. Good luck
you can also take it apart and completely submerse each peice separately in a highly volatile solution(rubbing alcohol will work, but i used ethanol), take it out and scrub for about five minutes with a toothbrush in all possible directions and then air dry on a towel for two days, yes it is time consuming but i left a test phone in water for three days and tried this and the phone worked perfectly
Buy New Keyboard
Expensive option is to replace the keyboard. If you go on eBay and do a search for Tytn 2 Covers or something alone thouse lines there are a couple of sellers that sell replacement covers that have the keyboards build it, and on the wiki page there are a couple of links to disasembly guides. Think replacements where around £50uk - Expensive and fiddly maybe, but your'll have a mark free case and fully working keyboard.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160244005122
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=360055816270
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250253843809
Rice is the best option I always recommend this. It has worked for me many times
thanks guys.....i actually dropped it in the lake about a month or so ago, i just finally got around to posting about my non working keyboard....i ended up taking it apart and letting it dry on my window sill in the sun for a full day and a half or so....
you really think there is still some water under the keyboard after a whole month....the e and w keys are the only things not working i just figured that something fried that spot on the circuit board or something along those lines....
does anyone know how to reprogram the keys on the keyboard? is it some registry setting? all i really need to do is switch some keys functions
perhaps ill try the rice thing tonight thanks guys
You may want to PM TaurusBullba or __Alex__ and ask them for help. I know that TaurusBullba posted the Tilt Keyboard Fix for HTC Roms (Remapping the hardware keys to the correct letters). Also, IIRC, __Alex__ posted the fix for TyTN II's using AT&T Roms.
Actually, if you search for their posts, they may mention how they did it.
so here's a going to bed and hoping when i wake up someone has helped me fix this bump....
im gonna go get some rice tomorrow after work
ill PM bulba and alex then as well
thanks everyone whos given advice....i really appreciate it
ill definitely post my results to help any future "phone in lake droppers"
~j
AEKmap will let you remap the keyboard keys. I was using it with my Hermes to account for different phone/ROM difference. I don't remember 100% if it will let you remap the special keys too, but I think so.
Very nice to hear our phone can survive a full dunk. Mine fell out of my belt clip case while walking. I tried to catch it with my foot and to my horror, ended up drop-kicking it 10' end over end in a dirt/gravel parking lot. Picked it up, blew the dust off, put the battery cover back on, and it fired right up. I thought for sure it was a goner.
My hat is off to the HTC team for building a $500 device that can take abuse.
PQZII is another option for remapping the keys.
KMFM$ said:
You may want to PM TaurusBullba or __Alex__ and ask them for help. I know that TaurusBullba posted the Tilt Keyboard Fix for HTC Roms (Remapping the hardware keys to the correct letters). Also, IIRC, __Alex__ posted the fix for TyTN II's using AT&T Roms.
Actually, if you search for their posts, they may mention how they did it.
Click to expand...
Click to collapse
What TaurusBulba and I did is just take the keyboard layout registry entries from a ROM (AT&T for TaurusBulba, HTC for me) and dump it to a cab, so AT&T users can use HTC ROMs and vice versa.
I do seem to remember yet another thread which tells you how to actually map keys and it may be linked in the wiki.
Hope this helps!
Most likely your problem is coming from "dirt/minerals/gunk" that dried on either the PCB or under the keys. Dunking it in a high volatile solution and swishing it around, or similar, may help. Obviously remove the battery!
O_O
your phone can swimm..
thats cool...
always wanna know . . . . . . . . . . does it float?
LOL . . . .dropped my old siemens M65 off the boat, it worked for 30 mins on 5m depth, but never found it back . . .
So here is my story.. i have a perfectly working kaiser, and one with a broken lcd.. but both of them are in terrible cosmetic condition.. so i decide to order from ebay a full housing (with keyboard included) to make it look good and give it to my brother as a present..
I perfectly disassemble the device with the working screen and easily install it in the new housing.. but when i turn it on i realise that the only working hardware keyboard buttons were q e u o f h l and some arrows i think...
My first conclusion was that the keyboard included in the housing was not working correctly so i decide to use my old one. but to my surprise the old keyboard also has only the same working buttons!!!
after that i also tried the keyboard from my other kaiser ( with the broken screen) with the same results.
So up to this point, i guess it is safe to assume that the keyboards have no problem.. but then the mystery grows cause i exchanged every single piece of the phone with the broken kaiser's parts and the problem remains the same...
Any idea?? i am an engineer and problems like that that i cannot think of a reason that they are happening drive me nuts!!! please help me sleep at nights..
thanx in advance!
Hooray! Someone else who has the exact same problem as me! The phone I have had the LCD screen replaced and once it was reassembled, the keyboard is wacky. I tried reseating it and the same keys you mention are the only ones working: Q E U O F H L, CAP/Shift, Tab, Space, Enter and the 4 arrow keys. Nothing else works. I'd love to see if anyone has a solution to our problem. =)
Also, I'm not sure if it does it for you but the backlighting doesn't turn back on once it goes off - even when pressing the working keys. I found other posts on this forum with similar problems (with no replies) but their keyboards were not working at all. There has to be a simple solution that we're missing if it's this common.
Thats really weird that we have the same keys working... it really has to be something we are missing... but i have changed everything..
the only thing i didnt change is the lcd, so now that you are telling me that this happened only after you changed the lcd, it got me thinking that maybe the lcd is not as inocent as it may seem... cause,ok, my first thought was like wtf the lcd couldnt mess up with the keyboard.. but now that i think about it it is the only thing i havent tried to replace.. i have a broken one but still quite operative, so i will try with this one and get back at you.. if in the meanwhile anyone else knows something or has an idea, please help a little bit!
Like you, I cannot find any reason between the keyboard and the screen that would cause this. They're not connected in any way or share any cables. They connect to different parts of the main board... there's no logic that I can find.
I got mine second-hand and the original owner said she had the LCD replaced because of a couple dead pixels. The keyboard was working fine before that. Let me know what you find out. I was planning on ordering a replacement keyboard assembly from eBay but since you've tried a couple, that saves me from wasting that money.
Unfortunatelly the extra LCD i had was not operating at all, so the test i wanted to do failed, and i still dont know whats causing the problem... i am more or less convinced that i have to buy a new lcd but it is a bit of a risk to change the screen because some buttons on the keyboard dont work, dont you think?? anyway i am wondering y nobody else has nothing to say... this hasnt happened to anyone else??
ilias_alk said:
Unfortunatelly the extra LCD i had was not operating at all, so the test i wanted to do failed, and i still dont know whats causing the problem... i am more or less convinced that i have to buy a new lcd but it is a bit of a risk to change the screen because some buttons on the keyboard dont work, dont you think?? anyway i am wondering y nobody else has nothing to say... this hasnt happened to anyone else??
Click to expand...
Click to collapse
Hey, why do not you try endkey replacement, you can read and download it at http://forum.xda-developers.com/showthread.php?t=704631
Hakim Rahman said:
Hey, why do not you try endkey replacement, you can read and download it at http://forum.xda-developers.com/showthread.php?t=704631
Click to expand...
Click to collapse
thank you for your reply! but i don't understand how this would help for our problems..
i talked with htc yesterday and they told me it couldnt be the lcd, but during the lcd replacement probably the flexiboard was a little torned (needs a microscope to be verified..) i am giving it for a free test on monday so i guess i l have a more detailed answer soon!!
ilias_alk said:
thank you for your reply! but i don't understand how this would help for our problems..
i talked with htc yesterday and they told me it couldnt be the lcd, but during the lcd replacement probably the flexiboard was a little torned (needs a microscope to be verified..) i am giving it for a free test on monday so i guess i l have a more detailed answer soon!!
Click to expand...
Click to collapse
Hmm, that's an interesting find. It's odd that the same problem exists on different phones, unless it's a common section/piece of the board/assembly that gets damaged. Are you going to try and use the assembly from your other phone? Let me know what happens. I'd like to know what piece I need to buy to get mine working again. =)
Edit : The major issue seems to be grounding for most people. I'll mark that and you might wanna try that one first. Might as well wrap your digitizer too since it takes only a second. I'm preserving the post as it was to indicate we've all learned something from this thread. Thanks for sharing your experiences and the nice words folks. Cheers!
DIGITIZER WRAP : So fellas , my family has a lot of nexus 4s , one of them had a broken screen which we replaced. I also fixed the proximity sensor issue with it more than once so feel free to ask questions about it too. After the replacement and fixing those issues , we had another problem which is GPS taking 2 minutes to get a fix , despite the clearly visible sky and whatnot it refused to get a fix. So i set out to find the issue. The internal antenna that is connected to the back cover of the phone (behind your front camera) was clearly making contact , the antenna wire was plugged properly which i tested thoroughly with my trusty fluke on probe setting. Anyway , the problem was the Digitizer , if you can believe that.
Remember the original comes with aluminum tape wrapped around it. I always thought it was to protect it from external interference. I was half-right. It does protect it from external interference but it also protects the antennas from the digitizer's interference. I got some aluminum tape , wrapped it around the Digitizer's IC and et voila! We got a fix in 16 seconds from 14 satellites.
(This mod as it is pointed out by folks here , is pure coincidence it seems. Apparently there is the issue resistance and frequency value of the gps signal , the antenna's resistance needs to match that value or it will not get a signal. So the fact that we even got a signal , let alone a better one is like pure luck. Apparently the added resistance happened to match that value somehow. Anyway , you might wanna just skip this one. Thanks to bla_blaber for pointing that out.)
I also came up with a mod on the back plate.
What we did was , we cut 2 aluminum foils to 3-4 mm width and then starting from the gps contact zones which are located at the right corner of the back plate we started to lay them down avoiding other antennas as best as we can. We worked our way to the bottom with that foil and then connected that foil to the ends of an antenna sticker that we bought off ebay. Then we secured everything in place , and closed the device up. Another et voila , Fixes the position in 5-8 seconds on the same spot. This could theoretically work on the gsm/3g antenna as well although we haven'T tried that , we got pretty good reception where we live. I think those are also on the back plate.
Anyway folks , that's about it. I thought i'd share my experience with you guys so you don'T have to live through the same thing and even make it better. I wish i could provide some pictures but we closed the device up to test it and did not pry it open again. It gets really tense when you're prying open your only phone.
Note : Use copper foil if you can find that , it has better conductivity.
GROUNDING : On top of all those , you need to ground your antennas on the designated places around the frame. Mine came with the pads although some assemblies apparently don't have those , i recently had one. The original has sponge pads to provide contact since those parts of the board are recessed a bit. So , the ground connections need elevation to make contact. Use conductive tape (stack 3-5 together that should be enough) to elevate the points. The ground point just below the front camera is responsible for grounding the gps antenna , i'll mark that in the picture.
The other pictures are there to point out other components. The reference one is the one with the blue tape all over it.
That blue tape insulates the the chips , especially the emmc from the frame. You also need to do the same. You don't want the frame to accumulate charge , because then it won't ground.
WARNING : CUT THE EXCESS TAPE TO THE SHAPE OF THE RECESSED GROUNDING POINT. DON'T SHORT ANYTHING OUT. ESPECIALLY THE ICs.
Thanks to Eriol The Mariner for bringing the grounding issue to my attention.
Hello, I'm interesed in some pics and also with the proximity sensor issu that i'm facing to... Thank you very Mutch from a french Guy with a poor N4 (GPS ans proximity issu)
Sent from my Nexus 4 using XDA Free mobile app
jmouf said:
Hello, I'm interesed in some pics and also with the proximity sensor issu that i'm facing to... Thank you very Mutch from a french Guy with a poor N4 (GPS ans proximity issu)
Sent from my Nexus 4 using XDA Free mobile app
Click to expand...
Click to collapse
I'll make the pictures on Monday. I'm going on a short vacation now. If you want i can also help you on skype when i'm free.
Cheers!
OK thanks. No problème for the wait... I'm already waiting for 6 month ( when i changed my broken screen!!)
I use proximityscreenoff app for now.
Sent from my Nexus 4 using XDA Free mobile app
GPS
Hi!
So, i manage to fix my proximity sensor with the "black ruber" method but if you can show me how to fix the GPS that will be pretty cool !
Thanks in advence
Same problem here!
I also have exactly the same problem. Waiting for the photos of your work! Thank you for your post! :good:
I bought my Nexus 4 the day it came out. I was one of the lucky ones. Since then ive had an attachment to it. The only problem is that the gps stopped working after fixing the LCD. Hopefully we get the images soon so I could fix my GPS as well. You sir are amazing :good:
I'm also patiently awaiting a response too!
I bought my phone used and the GPS was probably always wonky, always losing its fix and taking forever to get a lock. It's really annoying when you're driving using the GPS and it loses GPS signal and then I get lost lol!
The GPS works sometimes but not very well, which makes me think there is something wrong with the GPS receiver.
I'm guessing the previous owner replaced the screen (the bezel was a bit weird around the screen, made me think it was replaced), so that would explain it... I'd rather try to fix this myself though.
Sorry boys , i had a crapton of work to do , i didn'T have time for pictures or anything. I made a picture for you now , it's not my phone but i marked what i did.
1. You have to make sure that your digitizer has this aluminum shielding or else it will cause interference.
2.Don't over-tighten the screws around the proximity sensor which are marked.
3. Below the middle cover is the proximity sensor , which i marked. Insert a paper shim there to make sure it is in position.
4. If you make the foil antenna , avoid other antennas AT ALL COSTS! It will not explode or anything but the other antennas' signals will degrade.
5. Make the antenna very narrow so it doesn't interfere.
6. Place the antennas on top of gps contact points and make sure they don'T touch each other.
7. Antenna material has to be conductive.
8. You cannot possibly brick your device with these instructions. So , if you brick it , it's totally your fault.
The picture :
http://postimg.org/image/m06morc2v/
Good Luck.
Hi !
Thanks for the help and sharing your tips.
I have a similar problem : I replaced my Nexus 4 broken screen but also the battery one week ago.
After the replacement, a GPS problem shows up: the GPS is taking a few seconds (around 20 sec) to fix for the first time but the signal is very weak (low accuracy on GPS tester app) and eventually the fix is lost after 30-40 seconds, recovered for 30-40 sec and lost again etc. When the weather is cloudy, it's even worse : the GPS can't keep the fix more than 5 seconds. It's acting like the GPS antenna has an issue.
I have tried to reopen the phone, to check if the aluminium shielding was here and it was. Just in case, I wrap another aluminium tape around the Digitier's IC with no result
The replacement screen seems to be a genuine one, everything is working fine (proximity sensor for example) except the GPS.
I haven't tried the antenna mod yet but I think that it should be working fine without it.
Does anyone has another idea to help me ?
PS : sorry if my english is wrong, I tried to do my best
Try this attachment... It will fix it
boltthrower56 said:
So fellas , my family has a lot of nexus 4s , one of them had a broken screen which we replaced. I also fixed the proximity sensor issue with it more than once so feel free to ask questions about it too. After the replacement and fixing those issues , we had another problem which is GPS taking 2 minutes to get a fix , despite the clearly visible sky and whatnot it refused to get a fix. So i set out to find the issue. The internal antenna that is connected to the back cover of the phone (behind your front camera) was clearly making contact , the antenna wire was plugged properly which i tested thoroughly with my trusty fluke on probe setting. Anyway , the problem was the Digitizer , if you can believe that.
Remember the original comes with aluminum tape wrapped around it. I always thought it was to protect it from external interference. I was half-right. It does protect it from external interference but it also protects the antennas from the digitizer's interference. I got some aluminum tape , wrapped it around the Digitizer's IC and et voila! We got a fix in 16 seconds from 14 satellites.
I also came up with a mod on the back plate.
What we did was , we cut 2 aluminum foils to 3-4 mm width and then starting from the gps contact zones which are located at the right corner of the back plate we started to lay them down avoiding other antennas as best as we can. We worked our way to the bottom with that foil and then connected that foil to the ends of an antenna sticker that we bought off ebay. Then we secured everything in place , and closed the device up. Another et voila , Fixes the position in 5-8 seconds on the same spot. This could theoretically work on the gsm/3g antenna as well although we haven'T tried that , we got pretty good reception where we live. I think those are also on the back plate.
Anyway folks , that's about it. I thought i'd share my experience with you guys so you don'T have to live through the same thing and even make it better. I wish i could provide some pictures but we closed the device up to test it and did not pry it open again. It gets really tense when you're prying open your only phone.
Note : Use copper foil if you can find that , it has better conductivity.
Click to expand...
Click to collapse
Try this attachment... It will fix it
Hi,
Thanks for your reply.
My Nexus 4 is not root so I can't change these configuration files.
My GPS was working fine before the screen (Lcd + digitizer) and battery changing, I used it every day on my road to work.
Now, it's just impossible because of these weird fix losses and I can't figure out the reason
Any news ? GPS find 0/23 satellits but isn't locking at all after replacing my n4 screen... tried everything described in the OP, can't get why the GPS doesn't work anymore after screen replacement, truly annoying!
Hey! Pictures are not showing up, could you up them up somewhere?
Could you also clarify the use of aluminum foil? Not sure I understand "make foil antenna", "make the antenna very narrow" part of your to-do? I'm having no GPS issues after screen replacement so I'm sure this will fix it just have to figure it out how
Thanks!
boltthrower56 said:
Sorry boys , i had a crapton of work to do , i didn'T have time for pictures or anything. I made a picture for you now , it's not my phone but i marked what i did.
1. You have to make sure that your digitizer has this aluminum shielding or else it will cause interference.
2.Don't over-tighten the screws around the proximity sensor which are marked.
3. Below the middle cover is the proximity sensor , which i marked. Insert a paper shim there to make sure it is in position.
4. If you make the foil antenna , avoid other antennas AT ALL COSTS! It will not explode or anything but the other antennas' signals will degrade.
5. Make the antenna very narrow so it doesn't interfere.
6. Place the antennas on top of gps contact points and make sure they don'T touch each other.
7. Antenna material has to be conductive.
8. You cannot possibly brick your device with these instructions. So , if you brick it , it's totally your fault.
The picture :
http://postimg.org/image/m06morc2v/
Good Luck.
Click to expand...
Click to collapse
Hi, I also have these issues after I replaced my display with a 45$-product from AliExpress. Mine comes with an aluminum tape. I wrapped another tape around it with no effect. Any other suggestions?
Dear all,
I spent the last two days working on the problem, trying the fix suggested by the OP.
My replacement screen came with an aluminium shield on the digitizer's IC, but I still suffer from the problem reported here.
What I tried was to put some insulating tape around the digitizer's IC's aluminium shield. The GPS signal got better but still far from how strong/fast it used to be.
The addictional foil antenna was an epic fail for me.
Thanks to boltthrower56 for his precious help.
I'm still wondering whether is possible to fix the weak gps signal in some other way.
post scriptum: I'm so disappointed with LG (the Nexus 4 wasn't really meant to be easy to open/repair) and with these chinese sellers who sell very low quality screen (again, blame on lg, for the replacement part I was asked 140€!!)
nexus 4 gps fixed
...
I got a nexus 4 with a broken screen and repaired it (only the front screen with digitizer - http://www.ebay.co.uk/itm/NEW-LCD-T...K_Replacement_Parts_Tools&hash=item5668d16af2). The screen seems to be fine, very clear picture etc, but it came without the foil around the digitizer.
I've tried adding insulating tape to both sides to a strip of kitchen aluminum foil (to prevent conductivity) and wrapped it around digitizer, gps works like crap compared to my old Xperia NeoV, signal is at minimum and it is accurate to about 60 feet at best.
Is there a difference between kitchen aluminum foil and that tape? I'm not sure what else it could be, contacts on back case seems to be ok and pressing on it doesn't change the signal. Maybe it is the new front panel on the screen that is interfering (though I'm not sure if that matters, since antenna is on the back)?
Hi, I'm having a similar problem with yours.
The difference is, I've never replaced my screen, so I'm very certain that I have the Aluminium Foil in the Digitizer (It's the one that you marked "Al. Shield" in the picture, right?)
I'm quite busy with exam right now so I can't tinker with my phone.
I remember that I dropped my phone hard few days or weeks ago, that could probably the cause
Will removing the back cover and checking the conductivity help? I can never get a good GPS signal anymore, it's always inaccurate by like 50-100 ft and it loses signal frequently.
And also, I could not understand your "foil antenna" mod(?), in your picture there was no foil at all. Should I put a foil between the GPS contact or what?
What did you replace then, do you still have a broken screen?
Maybe it's the back cover. I've soldered a bit my contacts but that didn't help at all.
Sent from my Nexus 4 using XDA Free mobile app
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.
Jack_R1 said:
Judging by your description, it might be that the WiFi/BT chip isn't attached well - some of the balls in the BGA (Ball Grid Array, look it up) have cracks that prevent proper contact.
If this is indeed the case, it can be fixed by reflowing or just directed heating of the chip area to the melting temperature of the soldering alloy.
However, this might not be the problem - and if it isn't, there might be a host of reasons for it.
You need to correlate the location of the WiFi/BT chip and the pressure you're applying.
Click to expand...
Click to collapse
wow thank you, i looke it up it should be simple
could you tell me what is the bridging he talked about ?
He might be suspecting something else.
synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Click to expand...
Click to collapse
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?
so i sent it to a repair center sony told me the board is fried, i dont know what this means , everything works except for wifi bluetooth, they are both working until now, i think they heated the wifi part on the board
Silverdace said:
I have fixed my WiFi but bluetooth is still dead.
The WiFi problem is actually a poor connection between two boards inside the phone. There's two boards that need to make contact but because they aren't hard-wired together they rely on a touch contact. There's a shiny foil square on top board (main pcb) that has to contact conductive square on lower board. The shiny foil square looks like it gets compressed over time which is why the wifi only fails on some phones after a while. Some phones will be fine but I think it's just poor engineering to rely on a soft touch contact!!
When you push in the back against the mic you are pushing the boards together to make contact.
I fixed by placing some of the screen adhesive (which I had plenty of after removing screen) underneath the spacer pad that is under the bottom board. This forces the boards together and keeps the WiFi going.
However, I thought this would fix bluetooth but no such luck. Perhaps there's another connection that's not right somewhere?
Click to expand...
Click to collapse
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?
nikunjnandaniya said:
Hi,
Can you please let me know that how did you open that phone? did you opened it by your self?
Is it possible to open from back side only?
Do you have pictures for wifi solution which you described above?
Click to expand...
Click to collapse
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.
Silverdace said:
Hi sorry but don't have phone any more. Don't think I have pictures any more either.
You cannot open from back side only. You have to take off screen. Look on youtube to see how it's done.
Click to expand...
Click to collapse
Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.
nikunjnandaniya said:
Hi,
Thanks for your reply. Currently i had press with pressure back side and it's working for me.
But let say if i open phone as shown in youtube then do i need anything extra to assemble my phone again?
Thanks that you have write your wifi issue here and it will help others.
Click to expand...
Click to collapse
Yes, you'll need the screen adhesive stuff. Can find on eBay or Aliexpress or Witrigs etc.
synos_x said:
Hi
I have the c5502 with the bluetooth/wifi problem , the repair service told me they can fix it with bridges or smth and the problem will appear again,
First i dont believe them that much i just feel that they wanted me to pay for a new PCB
Question: Is this problem really fixable or should i buy a new one
Someone told me he will reweld the wifi and it is fixed
Note: The problem was temporarly fixed when i press hard on the back next to mic 2, but no longer works
Click to expand...
Click to collapse
old thread but just in case some zr user are still searching for an answer
there is a chip on main pcb which controls wifi and bluetooth, but sony didn't soldered it correctly and thus it needs pressure to make connections with pcb.
Only permanent solution is to apply heat on that chip ( after disassembling pcb from phone ) and then it will work for forever.
My phone's ( zr ) wifi bluetooth and nfc wasn't working, so i dissembled it and took the pcb to a laptop repair shop and told them to apply heat on that chip to solder it correctly ( as i don't have that instrument which is used to apply heat on small point ), and after that it is working without any issue. :highfive:
Note:- be carefull while removing screen as it is very fragile and will brake easily if not handled correctly ( yes i broke my screen and using an after market now which costed me Rs1800 ( for full folder ), i was lucky to still find its screen .
Saw Sooper diff DDI dijauhkan I'd do so