Main camera not working, hardware knowledge required, please help. - ONE Q&A, Help & Troubleshooting

Hi everyone, yesterday i tried to deassemble my OpO and managed to disturb 2 jumpers/small parts near camera connector jack (red circled parts in picture, part on the left is gone, right one is there) and rear camera stoped working, now camera app only shows front camera, can someone guide me what to do to fix it or what are these parts, any advise will be great, i dont have any good repair centres where i live. I can solder, tried to short the missing part pads but nothing happend, please help me, i think those are resistors but dont know the values can somebody guide me??

Related

[Q] Green lines and artifacts on camera, what helps?

Hey,
I have a problem with my Sensation i got from ebay. If i open a camera app there are green lines and artifacts all over the screen. If i take a picture, it is green green punctured too. It appears on front and back camera.
I've read that in most cases, a simply restart or removing the battery helps, but not in my case. I tried:
- removing battery for more than 5 hours
- restarting many tims
- flashing from VF rom to Stock rom
- flashing MIUI
- factory reset
Have anyone a idea what i can do? It seems like a hardware fault after all my tries to solve this problem, but my i just have to change something little part by me.
Best Regards
Thomas
I have checked the connection between cameras and motherboard, seems ok.
The problem is on both cameras, so i think it is a fault of the camera modules.
So maybe i can change the processing unit for the cameras. But, the Sensation has two units, upper mainboard and lower logic board.
So which unit is responsible for the cameras? Upper or lower board?
Take it apart, play around with it. That's your best bet.

[ FEITENG H9500 ] Known issues and fixes

Ok.. i see many people on this forum asking questions about this device.. the truth is this device is designed very poorly and it even may arive at your hands defective / with some or with a lots of problems.. you can proceed by your very own responsibility. Take a look in the picture for pcb details
- to Fix about every problem you need to findout how to unscrew the back plastic case and be able to see its PCB (Printent circuit Board) - Its pretty easy, just remove the little screws and give a presure at the clips of the cover to be removed, don't use metal objects because you will scratch the plastic.
* WIFI / GPS very low signal
Let me begin with one problem that you have FOR SURE.. is the low wifi signal and gps.. this is due to a horible design of the antenna.. the antenna is not just horrible, but it is also causing a short circuit it self! which is the main reason why the signal is low. First you have to stop the short circuit from happning
How to fix it? Unscrew the back cover, at the top of the back cover under the flash you will see a white sticker, this is the antenna, you have to remove completely this white sticker because it can't be useful by any way. Remove every piece of it including the copper-yellow color from the inside (the place that makes the connection.
Now find a UTP cable and take a piece of a hard copper of it, remove the plastic and keep the copper wire clear, cut it and place it in the whole were previewsly was the white sticker.. you have to place it in this way so it can connect with the inside conntact with the back plastic is placed and screwed again on the phone.. there are 2 pins in that place.. the old antenna used both of this pins (that was causing short circuit) you have to use the left pin and leave the right pin completely empty.. so the right pin doesn't connect anywere, and the left pin is connected to your piece of copper wire.
Cut the copper at the same size of the top of your phone.. so you can place it horizontal ... but you can also try vertical, (use wifi analyze app from play store to see what fits better for you)
Now.. this is the same antenna for gps.. you have nothing else to do.. just install GPS Test app and go outside and test your gps..
This is what i did and im pretty happy with it, instead i used 2 pices of copper and i covered the whole top place of my phone under the camera.. but that doesn't mean is the most right way because when we dealing with antennas there are a lot of math / and calculations that have to be done to design a perfect antenna.
the wire gives really a great signal.. just in case you want to reach the extreme.. Instead of copper wire you can use thin-Copper paper. (don't use foil of aluminium is not good) and design a better antenna copying the design of an antenna from another phone (that you know it works)
* Camera autofocus doesn't work - Or camera doesn't work at all
[Don't unscrew] Frist thing you should try is remove the back cover and give a presure in the right side of your camera with your finger.. this is the place the connector is located.. and it may gets unclipped and loose the connection after a small drop or something. After that Reboot the phone.
[unscrew back] If this presure on the right doesn't fix it, then you have to unscrew the phone.. take off the camera and give it some small hits and punches.. place back the camera and see if it works.. this is due the autofocus motor got stuck.
* Mic, Speaker, USB doesn't work
[Don't unscrew] This is due the connector of the bottom part got lost its connection. remove the back cover and give presure under the place of the SIM cards, were it writes 'WCDM' and 'GSP'. press a bit those spots. reboot, if not fixed:
[unscrew back] The two bottom connectors is 1. for the touchscreen and 2 for the bottom parts.. you need to check both of those because i am not sure which is which.
* SIM1, SIM2, Microsd not working
[Don't unscrew] Try to give some press next to vol+ / vol- buttons
[unscrew back] On the top left of the PCB there are located 2 connectors, 1 is for the front camera, and 2 is for the SIM/SD parts.. the last connector to the side of vol buttons is the connector you have to check and press to make sure is connected ok.
* Touchscreen doesn't work
[Don't unscrew] Give presure right under the headphones jack
[unscrew back] This is were it is located.
Charging Problem
I would like to add the problem with charging the batteries.
I got a new H9500, with two batteries. When i try to charge it with the adapter that came with it, the phone shows the charging animation, but it never actually charges the phone.
I have the same behaviour on both batteries.
After searching for a solution i found these:
-The charger supplied is 5V, 0.5A. Some people used a 1A charger and got to the point that it actually started to charge
-ROM problem, by changing the ROM some people were able to fix the problem, since the software was not getting correct info out of the battery's third pin.
Well none of the above worked for me. I hope someone comes up with an altarnate solution.
I need a new usb pcb for my feiteng H9500 (the usb port is broken on it)
This is the part I need :
the ones on aliexpress and dhgate don't ship to tunisia :/
my expirience
Hello guys...
My story. Bought this phone for my son for 160 €. We found out that camera focus didn't work, so I took it apart.
The easiest way to take down plastic cover, after it was unscrewed, is to put something plastic under it in the place between both SIM cards places, and work around inner battery square.
When cover was off, I found out that camera plug (right of camera) wasn't even plugged in. It only laid on connector. Plugged it in, and shake camera a little and auto focus came alive.
After that I noticed that black cable between gsm antenna and PCB was very loose, so I had to sort this out
At the end I found out that speaker connections are very delicate and had to take plastic down again to properly connect speaker.
Now it is obvious to me, why these Chinese phones are so cheap. We have saying in our country: pay little, get little
But now everything is cool and my son is happy.... And I am happy
Hi.
I just got a Feiteng H9500. The problem is that the camera is not working and the camera application hangs then stop responding then quit. When I start the camera nothing apears on display. I've put some pressure then some hits and it started to work a while. The focus worked as well but It seems to me not to work excellent so I gave it more hits, then the camera stopped working again. I have disassembly it, i moved a bit the camera and removed and put back the connector and it came alive again for a while, but just the front camera. Then stopped again. I have noticed that the camera doesn't move up and down when I press on it, it is stopped down, if I lift it with a needle it goes up, so it's not stucked.I can't even comute between cameras because the aplication hangs then quit. ( Everything else works.
any help? Thanks.
Hi Guys,
Just ordered the HTM H9500, is it exactly the same Phone as the Feiteng H9500?
I mean can I use ROMs for the Feiteng H9500 to flash them on the HTM H9500?
Big Thanx
cologne83 said:
Hi Guys,
Just ordered the HTM H9500, is it exactly the same Phone as the Feiteng H9500?
I mean can I use ROMs for the Feiteng H9500 to flash them on the HTM H9500?
Big Thanx
Click to expand...
Click to collapse
My phone is Feiteng H9500 (HTM).
Appearance is similar FEITENG h9500, but not identical.
I'm not sure that have the same Rom, so I did not dare to flash a custom ROM.
View here:
http://www.movilesdualsim.com/forums/feiteng-h9500.166/
I cannot read Spanish or whatever it may be
There is a ROM at needrom called something like this "feiteng / htm h9500".
That sounds like the device is the same...
Gesendet von meinem GT-I8190 mit Tapatalk
b0li said:
Hello guys...
My story. Bought this phone for my son for 160 €. We found out that camera focus didn't work, so I took it apart.
The easiest way to take down plastic cover, after it was unscrewed, is to put something plastic under it in the place between both SIM cards places, and work around inner battery square.
When cover was off, I found out that camera plug (right of camera) wasn't even plugged in. It only laid on connector. Plugged it in, and shake camera a little and auto focus came alive.
After that I noticed that black cable between gsm antenna and PCB was very loose, so I had to sort this out
At the end I found out that speaker connections are very delicate and had to take plastic down again to properly connect speaker.
Now it is obvious to me, why these Chinese phones are so cheap. We have saying in our country: pay little, get little
But now everything is cool and my son is happy.... And I am happy
Click to expand...
Click to collapse
Thanks to your photo guide, I found courage and disassembled my HTM H9500 and DG300 phones and fixed them easily (nothing to fix really, just blow off some dusts between camera connectors and in front speaker)
wassgha said:
I need a new usb pcb for my feiteng H9500 (the usb port is broken on it)
This is the part I need :
the ones on aliexpress and dhgate don't ship to tunisia :/
Click to expand...
Click to collapse
You should order it by the store you got the picture of it. actually there are many stores selling parts for this phone.. almost like its branded.. unlike with other chinese phones you get a struggle to find parts, so you shouldn't face any problem to order a part.
Sound when touch on Lock Screen
hi, guys
I have FEITENG (HTM) H9500 almost a year and I am very pleased with it.
I want to change the sound of the screen when touch lockscreen, but I do not know how.
It did not sound when unlock the screen, it is the sound when you put your finger on the screen while the screen is locked.
In The system/media/ui is not, and I do not know where I'd be looking elsewhere.
Please help
No Data connection
I have had a Feiteng H9500+ for a while but recently rooted it and tried some different ROMs as well as applying a GPS fix. Somehow now my AT&T data connection is not working. The SIM settings have the data on and set to AT&T and I turned roaming on just to be sure but nothing I do can get the AT&T data to work. When I am connected to Wi-Fi it works fine. This is the only way I can get Internet.
Can anyone help me get my mobile data working again?

[Q] Front facing camera issue

Hey,
So I cracked my screen, changed it with OEM new parts, and worked great for weeks after the installation.
Now, I'm having camera issues, back camera works fine, but when you switch to front facing camera the app freezes and crashes, and I get cant connect to camera black screen, and at this point the back camera wont work either, if you restart and clear data on camera app the back camera works again, but front facing will never work. Currently, I;m running stock rooted but I've had this issue with rooted custom roms and stock unrooted. I'm not sure if this is related to the screen change or not, but it worked great for weeks after the screen change. and, I;m having the same issue with other camera apps too, no snap chat installed nor any other apps that could conflict.
Any help would be greatly appreciated
Thanks!
I am currently dealing with a similar situation. Did you find anything to help fix the problem?
This is almost certainly due a little piece of tape coming off of the ribbon cable. I happened to solve this by cutting a small piece of scotch tape and wrapping it around the ribbon cable so that the underside of the cable is not making contact with the PCB.
I know this is a super late reply but I hope it can help someone in a similar situation!
Hello. So i had the exact same problem as OP. Got my screen replaced (not by me), but a few days after that i noticed that my camera would freeze when trying to change it to the front facing camera. i had issues with messenger and the normal app. i did a few system restores and even unlcoked and installed custom rooted Roms last night. Still freezing on the front camera.
I'm now positive its a hardware connection issue. Anyone else have this issue? I feel i should open the phone and try to fix it.

Replacing rear camera module

On rooted Developer Edition Ultra:
Is there any additional procedure needed after replacing the rear camera module? The phone has random camera busy/restart errors. Attempting to isolate apps via SafeMode was inconclusive. So, I decided to disassemble the phone and re-seat the camera ribbon cable - after reassembling, the camera works for a day or two - then the error appears for a while.
Thinking that it might be a failure of a camera component itself I replaced the module with a new one (bought from eBay) yesterday and when reassembled/rebooted - the new camera did not appear. I reinstalled the original camera which is currently working.
FYI - all ribbon cables are aligned, clips tight etc.
When I have some time I will reinstall new camera again and reflash with 4.4. Does anyone know if a new module needs to be 'initialzed'? My assumption was that installing the like component would simply 'work'.
Here is my experience when my rear camera started failing. The cause was from a drop, landed face down with a case, no visible damage, not a single scratch. After a few days, the camera start failing to initialize. I can get it to work by squeezing on the back case just right. Opened it up and started playing with the ribbon, taking the entire motherboard out, etc. Ended up replacing the camera and still the same. The cause I believe was a hairline fracture to the motherboard caused by the drop. I was still under warranty and Motorola replaced my phone no questions asked. I used the website so I never even spoke to anyone. So, that was my experience with this issue.
Sent from my iPad using Crapatalk
Thanks Johnny - that sounds familiar - my XT1080 took a hard fall once. Camera problems started after but I always attributed the issue to the move from 4.2 to 4.4. Camera is working well right now though I do have to restart the phone every day or so. Before I used to have to press on the phone back below the camera. Your symptoms are almost identical to mine.
The issue I had after replacing the camera was that the rear facing camera did not appear in the app after reboot - only the front facing camera. When you tried the new camera was it recognized immediately by the phone?
This Ultra D.E. is my 'daily driver' it does everything I need - it's out of warranty and sending it to MOTO for repair will cost $183. If I don't sort it out with another camera, I will assume that the motherboard is at fault (that of course was my next assumption). Thanks for confirming the problem.
I'll post a follow-up as soon as I either fix it or send it to MOTO.
It should just pick it up. There usually ins't anything you need to do. My guess is that there is some type of micro fracture, and when you installed the new camera it affected it just right, not letting android detect it. Try it again. Either that, or the camera you received was DOA, or has its own problems with the cable etc... hard to tell.
Try taking a good close look at the motherboard, maybe with a magnifying glass, see if you notice any small lines or breaks.

G Flex 2 camera problem and fix(if anyome can help)

So, please accept that I am not a specialist and that I want help from one specialist that (maybe and I truly hope) help.
My lg G Flex 2 (h955) malfunctioned after I installed snap camera and the actual camera app stopped working properly. It now shows only selfie and the "switch" button to the bsck camera no longer exists, as if there is no camera in the first place. I installed brand new firmware, even opened the back covers amd unplugged the camera module then plugged back in.
I cannot tell if this is the motherboard or the camera module, itself. I want to try to mount a G4 or another model camera module on it, just to see what happenes. But I want you, people, to advice me on what to do. What do you think it is best. There are lots of monry in here and I do not want to spend blindly. Please, no hateful comments. I had some bad times.
Thank you, sincerely. Hope for your best.
Hello,
I have the same problem, any luck solving this one ?

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