Related
Hi, I hope someone can help me.
I dropped my phone a couple of months ago and now I'm experiencing a problem. It appears to work fine for hours then suddenly starts losing signal strength to the point where it goes altogether. I can start a call with 5 bars and be cut off with no signal in a minute even though I've not moved. It will nearly always lose the signal when I'm on the phone but takes longer when just in other use. All remaining elements of the phone work fine. Please can someone suggest what it could be as it is getting me down...thanks
I'm sure it's a hardware problem.
have got the same problem.Did you already find the problem.In the beginning the signal just dropped but know i even cannot find any service at all.
gr
I've had some luck by raising all the contacts under the sim card but the signal still comes and goes when I use the phone ??
Snap!
I droppped my phone the other day and it is doing exactly the same thing. Mine is a Qtek S110. I used to 'lurk' on this forum ages ago.. but [email protected] BACK to seek help! If and when I get my phone fixed I WILL post and let you know what it is, if I havent already found the solution here!
I think it definately has something to do with the SIM holder, whenever the signal decays and vanishes, if I take out the sim and put it back in it comes back straight away. if I just take out the battery and replace it doesn't
ok.. next time i lose signal I will do that. maybe even run some isopropyl alcohol over the contacts to make sure they are clean.
I will keep you posted in my findings!
(oh.. i tried a makeshift external aerial last night to see if I could see if it was an internal aerial fault. It didnt make any difference, so either my homemade job was [email protected] or it isnt an aerial problem, I'm yet to find out!!)
Cheers!
oh poooop..
that unfortunately didnt work for me.. Oh well. i even tried cleaning the contacts and making sure the 'sprung' contacts were connecting with the Sim correctly.
I actually lost signal until it came back 15 mins later.. hmmmmmmm!!!
Can anyone advise where I can look on the circuit board to see if there is any damage. I am capable of doing this and making a basic repair !!
I had a look at the mda strip down guide on here, but I could see any reference to the aerial or anything. I think I'll have to send off for repair! Doh!
I emailed HPC and they wouldn't take mine back as apparently it was not sold in the UK.
I think I'll give xdarepairs.co.uk a go. a mate of mine said they were good n' quick.
merceeeeeeeeeeeeeeeeeeeeeeeee
no wurries!
the unit that sorunded in red (in the Attached picture) is connected to the main board with tiny connector, and this connector is a male to female connector. the male is solderd to the main board and the female to the unit. my guess is that one of the connector parts (the male or the female) was disconnect from its soldering, and you need to resold it. but it is just my guess based on my experience.
I was taking a look at the mda-jam.pdf guide to removing the case and it suggests that the aerial contact on the board you have pictured is with the front panel.
Can anyone confirm if indeed, the aerial for the phone is the metal casing? That would suggest that the dents in the front of mine could have affected that very contact.
Would still like an answer to my previous post.. but I think I may have fixed my phone temporarily.
Using the above information I got a flat bladed blunt instrument (in this case a normal dinner knife) and carefully placed it into the empty sd card slot. Using the diagram from the case removal guide I applied pressure with the knife to the area where the 'aerial connector' rests against the front bezel, inside, whilst at the same time pushing on the front outer casing with my thumb in the same position.
The thought process being, that it may have worked loose.
Sure enough I have noticed a vast improvement in signal yesterday and today. I am going to keep an eye on the phone today when I go out to see if the signal stays up!
YAY!
Okay.. latest update.
The signal did drop out a little bit throughout the day, So I have taken it upon my self to put my electronic training to good use.
Using the (now much read) case removal manual I carefully .. and I MEAN carefully took my phone to pieces.
I was convinced that the reason my signal kept dropping out was either that something had worked loose or that there were some contacts that needed cleaning or reseating.. as I was able to get a signal by squeezing the case at the top.
So.. Here's what I did (In reverse order)
Page 9 straightened and cleaned the 3 contacts on the RHS plastic plate with isopropyl alcohol. Also cleaned the corresponding contact points on the main PCB with alcohol and dried with a lintless bud.
Page 10 3 contact points, top right and top edge left are the contact points I refer to above. Also cleaned the 2 sprung contacts at the bottom of the PCB RHS page 10
Page 16 cleaned sprung 'Aerial Output' contact with alcohol.. also pushed connector outwards to make a betterr contact. Also cleaned 'contact to the antenna' area and dried thorughly with a lintless bud. Any other contacts I could see were cleaned and dried too.
Whilst putting the phone back together I was very careful not to touch any components. Battery contacts and Sim contacts were also cleaned.
One thing to note in the manula is that it it possible to unclip the connector for the camera prior to removing the plate in page 8. However, it is probably best to follow the guide, if you are unfamiliar with the type of connectors used. They can break easily.
My phone booted correctly and is currently on charge.. I am checking functionality at this very moment and can see that the signal is good and all other parts / hardware functions appear to be good. watch this space! It COULD be one fixed phone!!
I can't remember who on this forum wrote the mda-jam.pdf manual, but I would like to publicly thank you as you have helped fix my phone!
I hope its worked !!! Let me know !
OK!
Well so far I have noticed a dramatic improvement on how the phone was. I am sitting here with full signal, whereas on Saturday I had between 2-3 bars.
I lost a little signal earlier today but as soon as I held the phone up, the siganl came back. So, it's not perfect, but the phone is useable now.
As long as it lasts for the rest of my contract, I'll be happy!!
Dood.
Hey Guys,
Well, I'm a bit gutted really! I dropped my XDA Mini S on the floor with the charger in and the connector IN the phone has come apart from inside the phone. The little metal bit is practically hanging out. I'm wondering, if i were to take the phone apart could i re-connect the little part? (I have a soldering iron if thats as simple as its going to be?)
Just wondering if anyone had any guides on how to take the phone apart and take a look at whats wrong?
Any help would be so much appreciated!
Many Thanks,
Tom
The service manual is hosted on the ftp site.
ftp://ftp.xda-developers.com/Wizard/Docs_Tutorials/
Hope this helps.
I suspect you probably broke the socket off, but if you have a soldering iron, you might as well try to get a new mini USB connector to work with.
You might try Pocket PC Techs:
http://www.pocketpctechs.com/main~unit~UTStarcom_XV6700-554~area~repairs~item~REP-USBCON01~name~UTStarcom+XV6700+Mini+USB+Connector+Replacement+Service.htm
I rang them up about an issue I had (screen on the fritz) and they seemed pretty knowledgeable and helpful.
Alternatively there's a company I found today in the UK. I can't vouch if they're good or not.
http://www.xdarepairs.co.uk/home.asp
Good luck.
Well I also have an issue with my wizzard... the mini jack connector (of the handsfree) is a bit loose.
What I am saying is that it does have a good connection with the rest of the circuit and sometimes the sound of the speaker goes off, then I have to insert the habdsfree and tickle it a little bit until it has a good contact.
? have some basic soldering experience,do you think I should give it a try?
Given my device has been apart too many times for me to admit to I thought I'd crack it open to take a pic for you guys. Not sure if this pic will help for those wanting to do some soldering:
Very large pic: http://farm1.static.flickr.com/216/452691530_f47801708f_o.jpg
Excuse the dust.
Ah! That picture at the bottom is exactly what I needed. The metal but at the bottom (the big sqaure) has totally sheared off....bloody thing. Thanks so much for the info on the repair guides. I may give those repair guys a call if i can't get it to work myself.
Thanks alot you guys
As for you WizeMan, it all depends on if you wish to void your warrenty or not. At the end of the day, I installed WM6 on my device so O2 would give me the finger if i tryed to claim. If I'm honest, I'm getting an upgrade next month so I'm not to bothered if I balls it up! Would be nice if I got it working though....
Lemmie know how you get on
unlock k-jam
i read all your write about how to unlock k-jam device but after all i get this message:
Lock Status: 0000000000000000
SIMLock Code: █⌠═eי∟80Γ█Σ☻< δ♠
how can i get it from this .........
lironasseo said:
i read all your write about how to unlock k-jam device but after all i get this message:
Lock Status: 0000000000000000
SIMLock Code: █⌠═eי∟80Γ█Σ☻< δ♠
how can i get it from this .........
Click to expand...
Click to collapse
A little bit of a thread hijack but that means it is SIM unlocked.
Let me tell you my news, my friends.
I opened my Qtek 9100 and fixed two serious issues regarding this phone, using... sponge (the one we use to wash the dishes)
1. I put some into the stylus socket (from the thin space it has) and also
2. On the top of the mini jack socket so when i assembled the housing it blocked it from moving (2 of the contacts are no more soldered and i dint have a soldering iron at that time)
Anyway, both operation went ok and my phone is more than fully functioning. Now the stylus is hardly (in a good way) comming out (it first gets longer then comes out).
I wanted to do also the safe singal fix, but didnt find the photos to apply it correclty, so if someone has them, please give link. If you need any info about the "Sponge" Hacks, just post or pm
WizeMan said:
Let me tell you my news, my friends.
I opened my Qtek 9100 and fixed two serious issues regarding this phone, using... sponge (the one we use to wash the dishes)
1. I put some into the stylus socket (from the thin space it has) and also
2. On the top of the mini jack socket so when i assembled the housing it blocked it from moving (2 of the contacts are no more soldered and i dint have a soldering iron at that time)
Anyway, both operation went ok and my phone is more than fully functioning. Now the stylus is hardly (in a good way) comming out (it first gets longer then comes out).
I wanted to do also the safe singal fix, but didnt find the photos to apply it correclty, so if someone has them, please give link. If you need any info about the "Sponge" Hacks, just post or pm
Click to expand...
Click to collapse
I'm still trying to get the a new fascia and will probably shove an eraser bit into the stylus spring mechanism to ensure the defect never happens. Also how did you discover the break in the solder joints on the headphones jack? I have a funny situation where the left channel of the headphones doesn't work but I suspected the headphones (the plug has to be pulled at an angle to get any sound out of the left) but now I am thinking it may be the socket itself.
By the way the reception fix pic doesn't load for me either but I unless you truly need it, don't waste your time doing it; I always have all 4 bars and sometimes have 2 bars.
AsGF2MX said:
I'm still trying to get the a new fascia and will probably shove an eraser bit into the stylus spring mechanism to ensure the defect never happens. Also how did you discover the break in the solder joints on the headphones jack? I have a funny situation where the left channel of the headphones doesn't work but I suspected the headphones (the plug has to be pulled at an angle to get any sound out of the left) but now I am thinking it may be the socket itself.
By the way the reception fix pic doesn't load for me either but I unless you truly need it, don't waste your time doing it; I always have all 4 bars and sometimes have 2 bars.
Click to expand...
Click to collapse
Allright here is the deal.
1. I found out the break in the soldier joints when i opened it. I was really suspicious about it because when i inserted my headphone jack into the connector, i had problem with the contact; the connector was loose and it muted my phones speaker. When i disassembled the phone using the service manual i saw with my eyes that the the joins where f-ed up.
2. I dont really need the signal hack i just wanted to experiment, i have 2.25.11 cingular radio rom and its great.
Btw i suppose you should better use the sponge, because the rubber may wear off but not the sponge...
Thanks for the tip on the sponge. I am going to grab a used but allegedly "like new" body from eBay and also get one of those covers as well.
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!
Like the title says I now have little to no wifi signal unless stood next to the router?
Can anyone help me out am getting really cheesed off with this.
thanks in advance
Checked for loose connectors? Does wifi improve if you remove the cameras?
Was perfectly fine, before I did the camera, checked the conector the little point bit snapped off but not the ful connector so I am still able to lift it up slightly?
Are you referring to the centre pin?
no the little connector on the oppisote side of the bored
located here in the green ring, the whole connector is still attached all tho a little bit on the top has came of no bigger than a half centimeter
Maybe the connector is not making proper contact with the back casing. Maybe add a bit of solder to the gold contact to raise it up a bit to it makes better contact?
Would adding solder not damage it?
Check WiFi Antenna
PhaseCoder said:
Like the title says I now have little to no wifi signal unless stood next to the router?
Can anyone help me out am getting really cheesed off with this.
thanks in advance
Click to expand...
Click to collapse
Sounds to me like the device was opened to replace the camera, and it could be something easy to fix. Fix step open the device, and check that suckers WiFi Antenna wire....looks the same as a Laptop WiFi Antenna Wire, except smaller and shorter, it may be disconnected from the logic board connector location, or the wire is broken or damaged.
Adding a but of solder may work as long as you use low-melt solder, a very fine tip iron, and you do not let the solder flow to other parts of the board.
I suppose the alternative would be taking it to a cell shop to see if they can fix it.
I have Samsung i9505l updated to lollipop via OTA after updating All the sensor stopped what does it mean is Samsung killing their devices via ota's i said to my friends that it's hardware (sensor Hub) problem! and he was saying no it's software problem after downgrading to Kit Kat... everything works fine I lost $30 bet on it.! poor Samsung ! so the main question is there anyway to upgrade to lollipop with working sensors?
http://samsung-updates.com/
Hey guys. Here are a probably fix for wi-fi/sim/gps signal strenght problem after changing the touch or anything similar that needs to disassembly the Mimax2. Well, i found 2 solutions for the problem, but i need someone that understand about hardware to help us. The problem begins when you disassembly the phone, and the pins of the antenna dont plug correctly at the back of the phone. Here are the First solution (that didn't works for me, but maybe works for you):
The video is based in put on the pin a tinfoil to improve the connection with the back cover. I guess that the contact in back cover of my MM2 is very weak, so didnt work for me.
The solution number two is based in connect a copperwire on the pins or on Motherboard to make a homemade antenna. Maybe this way work for me and for who dont have success in the First guide. But as i said previously, i need someone to say If the connections in the pics are correctly. Those pics was found in a telegram group. Some guy made and send them.
Well, if anybody here help me, i'll probably make a video solving the problem. That may help a lot of people having the same problem (they think is a ROM issue, but isnt). I Just need to know where EXACTLY i have to plug the copperwires (fear of burn some peripheal) , and do the tests.
This is ridiculous. Just peel the old antenna out of the old screen, separate the new screen, and put the real antenna in.
You might ask, what is the antenna? Well, there's actually two in one piece of the phone. It's a sticker that the two gold contacts on the original screen were on. The main body is behind the glass, stuck to the plastic. Carefully peel those ends with the gold contact pads up, then from the other side, peel off the sticker they are a part of. The holes are there in all the screens, you just need to carefully push the ends back through with tweezers, then re-glue the glass to the plastic.
It's not easy, but it's not a copper wire hanging out of your phone either.