Hello,
I replaced my Sony Xperia Z5C lcd screen and everything is functioning well, except my wifi reception is poorer. Much poorer. I know it's a hardware problem because I've factory reset my phone and the problem persists.
I want to replace the wifi antenna, but shockingly, I cannot find any information about where it is. Is it a separate part? Is it on the motherboard? Some websites are telling me its a long thin blue wire. Some websites are telling me the plastic bracket is the wifi module. And some websites are telling me it is the NFC antenna. What I know to be true is that the antenna is located somewhere here, as described by the manual
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After researching to no conclusion, I am hoping that someone out there knows where it is located so I can replace it and get my phone working again. Thanks
Where it is at is not gonna be your issue. That will be that Sony doesn't sell replacement parts and you have have to solder it to the board and then reprogram it with tools not available to the public.
You should be able to pick it out when you opened it up. Also the screen could easily be part of the issue or you happened to touch something inside the device. That is the most common issue as the oils from human hands are terrible for electronic devices.
I would advise you to take it pack apart. With rubber gloves and an anti static pad. (should already have these from the screen repair.)
zelendel said:
Where it is at is not gonna be your issue. That will be that Sony doesn't sell replacement parts and you have have to solder it to the board and then reprogram it with tools not available to the public.
You should be able to pick it out when you opened it up. Also the screen could easily be part of the issue or you happened to touch something inside the device. That is the most common issue as the oils from human hands are terrible for electronic devices.
I would advise you to take it pack apart. With rubber gloves and an anti static pad. (should already have these from the screen repair.)
Click to expand...
Click to collapse
It is not the new screen. I tried putting back the old screen and it is still poor.
Can you please be more specific with how to fix the wifi antenna. Also, do you know where it is? It seems like you do. I just need more details about where it is.
flopshots said:
It is not the new screen. I tried putting back the old screen and it is still poor.
Can you please be more specific with how to fix the wifi antenna. Also, do you know where it is? It seems like you do. I just need more details about where it is.
Click to expand...
Click to collapse
I would have to see the device to be sure as it is placed differently in every model.
Then that leads me to the oil theory.
Once again finding it is the easy part.
So here is what you will need to do once you find it. (check fcc site. The approval comes with a blueprint.)
1. Take the whole device apart.
2. Remove the antenna
3. Replace the antenna by resold Erin it to the board.
4. Reprogram the board for the new antenna. (this you can't do as the software needed is not given to the public)
5. Use a J tag and the devices mount points on the board to reprogram the OS onto the board.
According to my own research, the antenna is right in that area where the manual states. It is a area on the plastic frame coated with conducting material in a certain pattern. If You remove that frame (right after you opened the backcover), You'll see many such coated areas which connect with the proper motherboard's spring contacts. Some of them to me seem to be only bridges from one mtherboard part to another, other coated areas seem to be antennas and such.
Related
Hi. I have some wallaby for repair from my team-mate, and i found, that soomeone (he told that serviceman ) "killed" some circuitry. That part is here:
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I cannot provide better image, coz i dont have camera with macro focusing, bud the area is clearly recognizable.
Would ANYONE be that kind, that he will tell me, what type of transistor and the other component (my guess is capacitor, but writing is unreadable EDIT: its Resistor R831 and it pulls down closer blue-marked IC to the ground, so i need a value of it ) it is? Both are "missing" so i cannot resolder them back. (marked with red)
Also some components are slightly damaged (like a scratch or something like that), but they are in place. (marked with blue)
The other possibility is that someone will send me service manual for this device. I'll be very glad for that (atleast this particular area).
This device turns on while in bootloader, and it turns on normally, but when it is not in bootloader, screen and backlight is dead, but i can hear windows boot sound, and it also reacts when i insert unformatted memcard, so i guess that OS is alive. I've passed all tests in test mode (except that in battery test there is known 0x000 problem in external voltage and charge voltage, but its charging, so no need to worry) and and i've tried to reflash it with new firmware (incl. bootloader) but no luck. I think that this (broken circuitry) is the case... Thanks in advance, Andy.
Hm, so many viewers, but noone replies... does anyone knows it? I have somehow managed to get the wallaby working, but i'd like to have it fixed correctly. so please... Someone... THX
the resistor is 240kOhms in my case. The smd transistor is marked with XA, don't know anything else
Thats exactly what i need So its the same transistor as others, so then it will be enough to measure its characteristics and buy similar THANK you !
BTW: did you unsolder that resistor from PCB, right? Didn't you measured it while connected, right? or was it written on its casing? if so, what exactly was on that ? (just to be sure)
i did not unsolder it. But in case 240kOhms is wrong the resistor must be even bigger than that (which is quite useless i guess)
No sound from speaker, low sound from earphone
Hi!
I copied my reply form another topic here:
I haven't got sound on my XDA1. I'm sure, that something died on the main board. When I run the audio test from the diagnostics. I can hear som very-very low sound, but only with earphones. This effect says me, that some amplifier gone bad.
I opened the case, and found a burned chip. I thought, I found the problem. I changed the chip, but nothing changed . (I have a "donor" main bard.)
By the way: what kind of chip is that? (See: attached image!)
On the chip is written "22 TI AHR", or "22 T1 AHR", or "22 TI AMR". Not good readable.
szajmon
Handy hint for you if you don't have a hi megapixel camera use a flatbed scanner you will get a much better detail picture allso handy for yourself to see reg details if you can't make them out.
just be gentle placing board on scanner plate.
I purchased a drowned HTC Diamond 2 which I used to house my MDA V in.
Now I was in possession of a broken mainboard.
Since the JTAG pinouts are unknown till this date, I stripped the mainboard from all its components and traced the board in order to find the JTAG.
Had to make new probes from some needles in order to trace from the BGA-Grid..
The difficulty here was that the test-pins where on the other side as where the MPM 7200-A was, and with those tiny bga-vias it was real hard to trace.
Some pictures of the board (before stripping)
The front side of the Mainboard (it is a single board device, apart from speakers, LCD and antenna no further external parts, all on one board!)
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Backside with foil still on it (this side is facing the front of the device)
Backside without Foil and here are the JTAG testpins:
The Pins I traced:
RTCK
TDO
TDI
TCK
TMS
TRST-N
*other pins:
Mode 0 (between TRST-N and TDI)
Will be checking for other pins on request (btw: sofar watchdog, mode 1,2,3 are not (yet) found)
These should suffice to JTAG the device.
For those in need of testpoints for reference voltage etc..:
Other info:
Memory module (on this board):
Hynix H8BES0UQ0MCA
More info Regarding JTAG as being used to debrick HTC Dream
Regards,
EqX
Great work equinoxe!!
orb3000 said:
Great work equinoxe!!
Click to expand...
Click to collapse
Well thanks for the board in the first place, without it I wouldn't be able to trace the pins!
Regards,
EqX
Sounds interesting, could you explain what this could be used for?
12
one use for JTAG is to flash the device at a low level (i.e. lower than the bootloader) - one use for this method of flashing is that you can recover from a bad bootloader flash
There are plenty of other uses too, that's just one
Kewl! I didn't know that
Very informative
Very good work, the first step to a device picking up momentum in a modding community is to find the JTAG pins, nice!
is this something awesomely awesome?
i mean does it enable us to do something cool which we couldnt do before?
You can eg. repair a hardbricked device.
Since you are entering the device on a lower level than the bootloader.
Lots of possibilities.
EqX
so, could this be used to enable iSecretary to work as a genuine answeringmachine? To send audio directly and not through speaker? And record incomming, ofcourse.
Goog work man !
can you make a high resolution picture to me?, i need to see all the CIs, to help in android development?, to see the diferences of decoders and encoders from the other devices.
@ Maikeu:
Regards,
EqX
Sounds interesting
To use the JTAG, you need some equipment, it does not connect to a PC's USB or serial port. And you need knowledge and software to delete everything in flash and reprogram stuff like a bootloader, radio or ROM.
I think this information is very usefull for some Topaz cracks, but not very usefull for most users.
My proposal to the moderator: Unstick this thread and put a link for it into the [ROLLUP MUST READ]ROM resources: HardSPL, Unlocking, Custom RUU, Kitchens, Radios thread, that's where it belongs.
can I ask for assistance in disassembling the td2 or could someone point me in the direction of a how to on the AT&T pure. I'm stuck getting the outer case of the back since the battery door is different than the original touch diamond 2. Thank you
does that look like an external antenna connector I see on the main board?
dna24 said:
can I ask for assistance in disassembling the td2 or could someone point me in the direction of a how to on the AT&T pure. I'm stuck getting the outer case of the back since the battery door is different than the original touch diamond 2. Thank you
Click to expand...
Click to collapse
Remove the plastic piece on the front (it is attached with only some double sided tape), beneath the plastic you can see the screws.
accord91lx said:
does that look like an external antenna connector I see on the main board?
Click to expand...
Click to collapse
Yes, there are 3 external connectors but tmk not accessible without disassembly.
@the-equinoxe----thank you so much, that worked perfectly, you da man
The speaker on my Razr is no longer working, it had been intermittent for a while (working for a day, then not working for a few) but it hasn't worked at all this week. Occasionally a hard reboot (power button plus volume down) will make it start working again but its also been a while since that has worked.
I've already exchanged one Razr for a speaker not working and Amazon won't exchange the phone again for the same issue. Instead they want to offer me credit towards a different phone. Since I got the Razr during the penny sale, that doesn't help me much.
Has anyone seen or heard of this issue before and are there any fixes? Do you know if its a software or a hardware problem? I love the phone, its just very frustrating that the speaker doesn't work.
I may have the same problem..
Is it only the back speaker which is down ?
Sorry but so far my only (and no-efficient) solution was hard reboot
Yeah, its the rear speaker. Hard booting sometimes works but not always. Seems more like a hardware issue because I can tap the speaker when it stops working and it will sometimes start working again.
Having the same issue, the main speaker sometimes gets turned off (especially when micro usb is inserted, and then pulled out).
What usually helps is to gently press on the silver MOTOROLA logo on the top of the phone (in the middle of the logo).
So looks like when inserting/ pulling out micro usb cable, somehow something gets moved inside, so the contacts are shifted, which is screwing the speaker)????
Looks like will go back to the store :-( if this continues.
The ringtone speaker is glued to the backplane of the phone.
It's connected via two spring loaded connectors. (Dumb solution imo)
I believe some electrical contact cleaner could solve the problem.
Must be one WITHOUT oil! The oil might enter the lens.
Detail picture:
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My suggestion for a fix is this:
Step 1:
Remove plastic backing on the camera. Carefully!
You don't need to remove the entire kevlar backing.
(As you can see the backplate was made very ugly by the ifixit crew)
Step 2:
Hold the phone like the picture, and apply a miniscule amount of contact cleaner here, the idea is to make the cleaning solution hit the two springs and contact pads.
Step 3:
Tap and press the area around the speaker carefully, the idea being to rub the connectors slightly while wet.
Let it dry and keep it lying in this direction, you don't want this stuff in the camera!
All images taken from ifixit.
I take no responsibility for any damage, this would be a last resort type of fix if you can't get a warranty claim for it. This obviously voids your warranty completely too.
Hi guys, i had a small problem with my phone. It wouldnt charge. So I send it to Samsung Repair point (company called Dynafix who repairs phones for all the large phone brands here in The Netherlands)
I got a reply back saying its water damage. They send me a photo with corrosion which they say is caused by water damage. But the photo is so bad, I couldnt find out which part of the phone it shows.
Before sending the phone I did disassembly the phone to look inside and didnt see any water marks.
I did ask for a better photo and they will send me one but I thought I'll post here in the meantime.
When asking what the repair costs would be, they said it the phone cant be repaired.
My phone is in great condition. Everything works fine. Only when I plug it in to charge I get a battery disconnected error. Same thing happens when charging it through my pc. But the usb connector works cause I can connect it to my pc and transfer files. Also when I charge my battery in another phone and put it back in, phone works.
So only a charging problem.
Anyways, the part where I need you guys is, is if someone could tell me which part of the phone this is, i would really be grateful.
Thanks
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Ear piece?
I'd have them clarify if the water damage is:
a. user submersed phone in hot spring,
b. phone can't handle winter time condensation.
You shouldn't have to pay for b.
mudferret said:
Ear piece?
I'd have them clarify if the water damage is:
a. user submersed phone in hot spring,
b. phone can't handle winter time condensation.
You shouldn't have to pay for b.
Click to expand...
Click to collapse
Hi, thanks for replying. Dont think its the earpiece. doesnt look like it.
I send Samsung an email asking for more info. They told me to contact the repair company and send information and photos back to them (to Samsung) So now I'm waiting for the better photos, so i can send them in with my complaint to Samsung.
FWIW I've been a little "fearful" of condensation; I've heard a lot of reports lately. The "fix", on the manufacturing side, could be something as simple as prepping, or treating, the connections differently.
Good luck.
Did you drop your phone in hot tub/ waterfall/ ocean/ bath/ whirlpool/ toilet? If so, we can all assume it's water damage and get on with our lives. If you didn't do any damage to it and that just happened then you can talk to them and ask them to test it further. If the water damage is caused by condensation it would leave a very different mark to if you dropped it a bottle of Evian.
Hi, thank you guys for replying. Phone didnt get wet. Only explanation is rain maybe or condensation. Anyways I will handle that with Samsung
All I want to know is if someone recognizes which part of the phone is on that photo.
Service manual on here has stripped down pictures as does one of the web reviews .
jje
If you are wondering where the location is still, it is behind the sim card. Where the sim card goes, it is on the left side where you can see the blue PCB. At the top edge of the blue PCB right there, you will see the corner is dark blue like in the picture of yours.
Kaze105 said:
If you are wondering where the location is still, it is behind the sim card. Where the sim card goes, it is on the left side where you can see the blue PCB. At the top edge of the blue PCB right there, you will see the corner is dark blue like in the picture of yours.
Click to expand...
Click to collapse
Thanks! Been searching on photos but couldnt find it Weird that theres a water mark there....
My friend broke the screen on his Galaxy SII (i9100) during summer vacation. We ordered a screen&bezel replacement part from eBay, and have succesfully disassembled the phone, removed everything that needs to be removed (the new bezel is kind of an empty one, so I have to move just about all the easily removable parts from the old one). I've moved all parts except the PBA and sub-PBA (usb board) to the replacement part.
Pic:
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Now, the problem here seems to be that in the original part, where the USB board goes, there's this golden thingy underneath:
Which you can see is missing from the replacement part:
Since there's clearly a connection for that golden bar (pic: http://i47.tinypic.com/166gaqc.jpg ) underneath the usb board, I am fairly certain the phone won't work as intended if I just screw the board onto the replacement part as it is.
I'm also wondering about the small cable popping up from underneath the casing - is it supposed to just press down against the gray/silverish area when you screw the board onto the part or is there a connector for it to press against, maybe a part of the golden bar/thingy that's on the original part but not on the replacement? The cable's clearly visible in the first picture.
I've tried to search the web for videos, instructions, answers or any information about this, but can't seem to find anything to help with this one. If someone here is able to point me in the right direction or better yet, provide instructions for this, I'd really appreciate it!
Full size versions of the tagged pics:
[URL="http://i49.tinypic.com/3466l5f.jpg"]http://i49.tinypic.com/3466l5f.jpg[/URL]
[URL="http://i49.tinypic.com/28v3m20.jpg"]http://i49.tinypic.com/28v3m20.jpg[/URL]
[URL="http://i50.tinypic.com/29f2vs3.jpg"]http://i50.tinypic.com/29f2vs3.jpg[/URL]
this tutorial should answer all your questions
http://forum.xda-developers.com/showthread.php?t=1253969&highlight=tutorial+screen+replacement
Theres a good video that shows everything.Look at the motherboard topic I created (profile>view users topics)and a chap called Roger posted it.
Also you can download the service manual for the s2 off samsungs site and see what that gold bar is for.
Sent from my GT-N7000 using xda premium
Cosmic Blue: I've read and partially followed that tutorial, yes, but it's in no way helpful with this problem as the replacement part used in the tutorial has a new USB-board on it already and thus the guy doesn't even remove the USB-board at any point.
theunderling: Thanks for the tip, though I already watched that video as well - very helpful and clear indeed! Regardless, it doesn't help with the golden bar thing as the replacement part used in the video already has the golden bar on it. I also went through all the .pdf's in my service manual download, can't find a mention of the golden bar. Is it in there? If it is, where exactly?
I mean, what I really need to know here is if the golden bar is needed (99% sure the answer to this is yes) and how to move it from the old part to the new one that's missing the bar since I'm afraid to just go poking around and possibly break my friends phone. Also, the small cable that's sticking out - in the video it seems that the board is just installed on top of it, leaving it pressed against something that after examining the old part seems like a small strip of silver-color metal right next to the golden bar. This strip is also missing from the replacement part which leads me to think it's an extension of the golden bar. Anyone have any experience with this particular bit of the hardware?
Anyone?
You should call the person who sold it to you. He may have given you a defective board by mistake. I have checked the internet and all videos I have seen have the gold bar as part the screen assembly.
Cosmic Blue said:
You should call the person who sold it to you. He may have given you a defective board by mistake. I have checked the internet and all videos I have seen have the gold bar as part the screen assembly.
Click to expand...
Click to collapse
Alright, will do and will report here after the issue is solved in case someone else will find the information useful.
Thanks!
Edited years later as I shamefully forgot to report back... Yeap, got a new board and it worked just fine. That was the culprit.