Re-soldering original Skyworks 77529 to motherboard. - Nexus S Q&A, Help & Troubleshooting

Recently my phone was ran over. i replaced the screen which was damaged beyond salvage. after some investigation because my phone was not connecting to the network, i looked beneath the metal bed for the sim card/nfc. i wanted to know if it is possible to put it back on. if it is i wouldn't be doing it myself as i don't have a soldering station handy. i want to make sure it's doable.

mecharata said:
Recently my phone was ran over. i replaced the screen which was damaged beyond salvage. after some investigation because my phone was not connecting to the network, i wanted to know if it is possible to put it back on. if it is i wouldn't be doing it myself. i just want to make sure it's doable.
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Click to collapse
if it is possible i think your best bet would be to use heat less solder its like glue

mecharata said:
Recently my phone was ran over. i replaced the screen which was damaged beyond salvage. after some investigation because my phone was not connecting to the network, i looked beneath the metal bed for the sim card/nfc. i wanted to know if it is possible to put it back on. if it is i wouldn't be doing it myself as i don't have a soldering station handy. i want to make sure it's doable.
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Click to collapse
after reading and researching( watching videos) looks doable also my worry is if it is still functional.

if all else fails and it doest check out ebay i just bought my nexus s4g on there for 90 shipped with 2 battery's two cases and belt clip

Related

Want your opinion on this phone black screen issue (see picture)...

My wife's phone got water damaged a few days ago and I took it apart and removed as much water as possible and put it in a bowl of rice to set.
I finally tried turning it on today and it seems to work fine (I think, syncs etc.) except that the screen does not power on. I can see the backlights when I look at it from an angle so it appears to receive power of some kind.
I took it apart further to see if I could see anything and I found that on the display cable there is a black area which looks like it is damaged/burnt on the cable. There was also a little bit of black on the connector but I believe I got most of that cleaned off, but the area on the cable does not seem to be able to be cleaned.
I don't really know anything about electronics or parts of a phone and was wondering if anyone that did could suggest what my next steps would be to restore the phone/screen to operational condition? Part replacement etc.
Thank you.
It sounds like the chip connected to that cable got fried, hence the burnt spots.
Sent from my X10 using XDA App
kindred7 said:
It sounds like the chip connected to that cable got fried, hence the burnt spots.
Sent from my X10 using XDA App
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If that's the case I'm assuming there isn't much I can do? I don't want to solder anything but could can replace anything that just snaps in.
Thanks.
tripleoptic said:
If that's the case I'm assuming there isn't much I can do? I don't want to solder anything but could can replace anything that just snaps in.
Thanks.
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Click to collapse
Bump for last ditch effort to get some opinions before giving up.

[Q]Tablet not turning on after digitizer replacement

So I broke my digitizer glass a few weeks ago. I ordered a new digitizer off ebay... I made sure I ordered the correct version (it was the "no model version" or whatever). Installed it which was really annoying because of all the nasty glue.
Now I can't get the tablet to turn on at all. Before at least the LCD was functional. The red charging light comes on when I plug in the charger but that's it.
Any way I accidentally broke a cable or something when I was taking it apart? I checked it all and everything seems fine... I really don't know what to do.
Assuming I can't get it fixed, think I could sell the broken tablet for anything?
Thanks!
zaner123 said:
So I broke my digitizer glass a few weeks ago. I ordered a new digitizer off ebay... I made sure I ordered the correct version (it was the "no model version" or whatever). Installed it which was really annoying because of all the nasty glue.
Now I can't get the tablet to turn on at all. Before at least the LCD was functional. The red charging light comes on when I plug in the charger but that's it.
Any way I accidentally broke a cable or something when I was taking it apart? I checked it all and everything seems fine... I really don't know what to do.
Assuming I can't get it fixed, think I could sell the broken tablet for anything?
Thanks!
Click to expand...
Click to collapse
Of course you can resell the tab in its current state. Quickly or slowly depending on the asking price. But before doing that, you should check one more time. The fastest way is plug it to a TV monitor via the micro HDMI port. If it comes on, at least you know the system is working except for the video. Past that, there can only be two possibilities. (1) Bad lcd: something might have happened when you pried it off the broken digitizer; and/or (2) the video cable is bad, or improperly connected - by that, I mean you need to make sure it fits all the way in at both ends (mainboard & LCD). Check connection with a magnifying glass, You won't believe how many times people forget to reconnect the cable or connect it wrong. Lastly, if you did turn the service switch off, make sure it's turned on again. Good luck.
LCD to Mainboard connection...can it be connected "wrong"? Or simply not as snug as it should be?
Also, what is the service switch?
zaner123 said:
LCD to Mainboard connection...can it be connected "wrong"? Or simply not as snug as it should be?
Also, what is the service switch?
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Click to collapse
Here's the link to the relevant thread. Search for the necessary information within it. The cable that goes from LCD to mainboard is labeled: "MB" end goes to mainboard. The service switch is located at the top of the mainboard looking from the back, to the left of the power button ribbon (top right corner of tab), and is labeled "on"/"off". You should turn it off before doing anything. It cuts off all current to the boards and prevents accidental shortcircuitings. If you don't and mess around with the digitizer board, you might burn a fuse that controls the dig's operations. But this is for later. Go to the thread and browse it.

[Q] Got my phone wet. Everything still works but charging is unreliable

Hey everyone,
I wish I wasn't here under these circumstances, but yesterday my phone got drenched by the faucet when I accidentally dropped it in the sink. I turned it off right away and tried to dry it by blowing out all the holes/buttons/etc. with canned air. then (maybe stupidly) I turned the phone back on and used it the rest of the day, not really noticing that it wasn't charging when I plugged it in until later when the battery got very low and I plugged it in again and noticed that the charging symbol didn't appear.
Ultimately, what I found DID work, (at least temporarily, sometimes it still stops charging) was turning the phone off, then plugging it in, then turning it back on . When I did this, usb (and wireless) charging work, as well as the USB connection for getting files off the phone on my computer.
It's a bit odd that this is what worked, but so far, it seems to. I'm just not quite sure if there's anything else I can do other than maybe send the phone to LG for repair, or find a local shop that might be cheaper...
Just looking for any suggestions or information anyone may have to help me fix this. thanks in advance!
shorty6049 said:
Hey everyone,
I wish I wasn't here under these circumstances, but yesterday my phone got drenched by the faucet when I accidentally dropped it in the sink. I turned it off right away and tried to dry it by blowing out all the holes/buttons/etc. with canned air. then (maybe stupidly) I turned the phone back on and used it the rest of the day, not really noticing that it wasn't charging when I plugged it in until later when the battery got very low and I plugged it in again and noticed that the charging symbol didn't appear.
Ultimately, what I found DID work, (at least temporarily, sometimes it still stops charging) was turning the phone off, then plugging it in, then turning it back on . When I did this, usb (and wireless) charging work, as well as the USB connection for getting files off the phone on my computer.
It's a bit odd that this is what worked, but so far, it seems to. I'm just not quite sure if there's anything else I can do other than maybe send the phone to LG for repair, or find a local shop that might be cheaper...
Just looking for any suggestions or information anyone may have to help me fix this. thanks in advance!
Click to expand...
Click to collapse
You should have not used the phone but put it turned off in a bowl of uncooked rice for a few days. Optional also removed the back and the battery if possible. You will have corrossion now and maybe worse electrical damage.
gee2012 said:
You should have not used the phone but put it turned off in a bowl of uncooked rice for a few days. Optional also removed the back and the battery if possible. You will have corrossion now and maybe worse electrical damage.
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Yeah, I recognize that it was a bad idea... but there's not much I can do about that now. I'm just trying to figure out what my best course of action going forward is.
shorty6049 said:
Yeah, I recognize that it was a bad idea... but there's not much I can do about that now. I'm just trying to figure out what my best course of action going forward is.
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Click to collapse
Try to remove the back and battery and place it in a bowl of uncooked rice asap for 2-3 days, this will limit the damage. Your warranty will also be voided i`am afraid as the moisture indicators are colored now.
gee2012 said:
Try to remove the back and battery and place it in a bowl of uncooked rice asap for 2-3 days, this will limit the damage. Your warranty will also be voided i`am afraid as the moisture indicators are colored now.
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Click to collapse
what do you think the chances of the moisture indicators NOT being colored would be?
I had the phone inside a bumper case which covers the sides of the phone and the back. Some water got inside the case, but maybe not enough to wet the indicators.. I'd hate to open the phone and then realize they weren't colored. I hate opening phones if possible, but that'd be the only way to know for sure , I guess...
I'm working on getting my hands on a back up phone to use currently , but I hate to see the condition of this one get worse... (my nexus 4 that I was going to use as a backup hasn't wanted to power on in a couple months after I botched Rom flashing attempt and subsequent failure to accept a charge)
shorty6049 said:
what do you think the chances of the moisture indicators NOT being colored would be?
I had the phone inside a bumper case which covers the sides of the phone and the back. Some water got inside the case, but maybe not enough to wet the indicators.. I'd hate to open the phone and then realize they weren't colored. I hate opening phones if possible, but that'd be the only way to know for sure , I guess...
I'm working on getting my hands on a back up phone to use currently , but I hate to see the condition of this one get worse... (my nexus 4 that I was going to use as a backup hasn't wanted to power on in a couple months after I botched Rom flashing attempt and subsequent failure to accept a charge)
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Click to collapse
Water goes through the tiniest cracks and openings so i guess the indicators are colored. Only one sure way to find out and that is looking inside the phone. Look on YouTube for a Nexus 5 iFixit dissasembly video.
Opening up the phone doesn't really void the warranty. Breaking something while opening it does. You still had the headphone jack and the usb port open right? That means water got in and tripped the sensors. This is pretty much guaranteed. IMO, those sensors are too sensitive. Just using the phone in a humid place (bathroom while shower is running) trips them.
If everything works fine just try a wireless charger
Sent from my Nexus 5 using Tapatalk
The fact that your charging doesn't work reliably anymore probably means the moisture indicators would be coloured... I've had phones where the water didn't damage it at all and they still were
Sent from my Nexus 5 using Tapatalk

Dropped my P900! Blackout!

I just dropped my P900 and it went completely dark. :crying: There's no mark, not a crack, nothing, but the display is completely dark. The touch buttons on each side of the home button lights up, but the display does not.
Any advice? Or it is Samsung support next?
May the ribbon for the display is disconnected from the circuit board.
poetryrocksalot said:
May the ribbon for the display is disconnected from the circuit board.
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Click to collapse
Yeah, maybe I should open it myself and have a look. Are there any warranty seals that I will break if I pry it open? I have all the tools necessary, but are there any guides for opening the P900? I wouldn't want to break anything...
bluebirch said:
Yeah, maybe I should open it myself and have a look. Are there any warranty seals that I will break if I pry it open? I have all the tools necessary, but are there any guides for opening the P900? I wouldn't want to break anything...
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Click to collapse
This is a video on replacing the battery but it helped me when I re-soldered the battery connection on mine.
https://www.youtube.com/watch?v=VeSG0hHpAG8
I've opened mine a few times and haven't noticed any specific seals but mine was refurbished to start with.
Also I have the proper tools but found a guitar pick was easier to use personally on this tablet.
Starting at the power port to remove the back made it a lot easier for me, its pretty hard to get anything between the back cover and the tablet in other areas.
poetryrocksalot said:
May the ribbon for the display is disconnected from the circuit board.
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Click to collapse
This was indeed the problem! The connector has some kind of snap lock that had come loose. So easily fixed. Thanks for encouraging me to try to fix it myself. :good:
Glad I helped!
Sorry to hijack your thread but figured my problem might be related.
About 2 weeks ago I charged my tablet and stored it away. The other day I tried to use it and it wouldn't turn on. I tried to charge it but that didn't work either as there isn't even charging activity on the screen. I ordered a replacement battery thinking it might be that, but I was wrong. I still can't make it turn on. Any ideas what it can be? Thanks
bluebirch said:
This was indeed the problem! The connector has some kind of snap lock that had come loose. So easily fixed. Thanks for encouraging me to try to fix it myself. :good:
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Click to collapse
I had a similar experience. 3 weeks ago the 1x my SM P-900 is out of its protective case, it falls 2.5 ft off a table. Hits the floor. No visible cracks or breaks. I could hear hear it operating but the screen was black. Took 3 weeks to talk myself up to it but I pried off the back & used a magnifier glass to c.a.r.e.f.u.l.l.y check every ribbon connect. 1 connector's pins were very slightly off alignment. Couldnt find anything else. Put it back together...Yes! Screen works. All seems good. Took the back off again & securely taped over every ribbon connect I could find. Long time intermittent screen flicker issue (when battery was below 40%) also seems to be gone. That has been the best, eye squintin', back hunchin', shallow breathin', micro-screw wrangling, time investment my non-hardware tech self has ever spent. Wooo!

Bought replacement LCD, replaced my broken one and now my touch doesn't work

Title explains all. I'm in a tight bind with money too..
I want to believe I can just reflash stock via odin and it will come back. Or is there something else I can do to make this work?
It sense touch 10% of the time, but it's never enough to unlock my phone or do anything with it.
Edit: the new screen worked perfectly before I did the operation. Don't know what went wrong. I didn't scratch or bend anything to my knowledge. The process took about 10 minutes and went really smooth.
kanzenmuketsu said:
Title explains all. I'm in a tight bind with money too..
I want to believe I can just reflash stock via odin and it will come back. Or is there something else I can do to make this work?
It sense touch 10% of the time, but it's never enough to unlock my phone or do anything with it.
Edit: the new screen worked perfectly before I did the operation. Don't know what went wrong. I didn't scratch or bend anything to my knowledge. The process took about 10 minutes and went really smooth.
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Click to collapse
Hello, I repair cellphones for a living. And it depends on a lot of things. My guesses are three things. From most likely to least likely.
1. You said that everything was working fine before you changed ROMS, it could be an incompatibly issue between the screen and the software. A lot of aftermarket screens are mostly compatible with stock, a lot have compatibility with custom ROM. It could be an issue solely on the software and not related to the screen.
2. There isn't a solid connection on the LCD connector, that usually happens with during installation, sometimes if the device is set down hard or dropped knocking the connection loose.
3. It's a defective screen. It happens sometimes. It's not uncommon for a screen to appear fine but after a few hours it acts up. It could have just been a coincidence that you noticed or went defective when you flashed (not saying flashing is responsible for this scenario).
Flash back to stock and then you'll have a great chance of to see which out of the 3 are responsible. Cheers.
I repair iphones, android devices, laptops, ect.
Sent from SM-G900Pkltespr
There are only 2 flex cables on the S5 LCD. Make sure the primary (top flex) is seated correctly, then the easiest thing to check before taking the screen back off is the flex under the battery cover. You will see a little screw near the lower right of the battery with a little cover. Pull up that cover while the battery is out and make sure that cable is seated correctly. If both flex cables are seated correctly then it can only be 1 of 2 things IMHO, the screen you purchased is defective or you bent some pins on the mobo where the flex cables attach. I don't think it's a rom issue.

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