Database Info

mapping hardware for this device

Hi all,
As i started servicing all pdas for a couple of monthes (only as a hobby, i fix them for friends and relatives), i came across one BA that gave me some trouble.
i got it to replace its LCD that was broken as it was dropped and thats very simple to replace it, so far so good. now it has two main problems :
1. no sound from speaker (even when in speakerphone mode), but there is sound in the stereo earphones (i plugged to the connector by the sd card slot). - i can only assume that a bluetooth handsfree device it will also work.
2. although the backup battery is fully charged, if i remove the main battery even for a brief second, when turned on, the BA acts as if i made a hard reset.
as for solving the problems :
1. using a digital multimeter, i managed to track the conductivity from the internal speaker through its connector, flat ribbon to the connector which connects to the main pcb - so there is no contact problem from the speaker to the main pcb.
using the help from WIKI, i went to site that has the list of all components and their description - the IC that is responsible for audio amp is a MAXIM's MAX4410 which is a stereo headphone driver. a quick look at its charasteristics and typical configuration and i understood that (assuming this is the IC that drives the internal speaker) the speaker should have one pin which is ground and the other goes to the amplified signal from the IC. neither one of the pins showed it has GND to it. so maybe there is a bad GND line to the connector.
2. regarding the backup battery issue i do not know what makes this problem.
I am sharing this info with you all with two ideas in mind :
1. to resolve my problem and know those devices hardware better.
2. because i am quite a while watching xda-developers and WIKI and i got the feeling that a lot of eforth is given to the software side of all those pdas (which is greate!!! keep going, this work helps lots of people and it shows al thos mega corps they are not the only ones), but the hardware is a bit forgotten and left behind. let me tell you this, there are many VERY simple mini projects i made useing electronics (i am an electronics engineer in my profession) that made my life easy . i am now investigating those instruments hardware as i have several ideas to develope useful accessories to my pda (like an external IR transciver to control IR devices like TV,DVD and to communicate with my laptop, and some other ideas) and i believe we can do the same info sharing as done on software side but on the hardware side.
I will thank any ideas, thoghts or commentsabout this matter. Yol.

Great job Yol!
I once read somewhere here that the problem with the speaker had something to do with the headset jack. Since you mentioned that the BA was dropped and that it still is experiencing battery and other problems, then most probably the motherboard is damaged.
In any case, keep up the good work!

hints....
Thanks zerimar, i also had this cross my mind i will check this speaker issue.
it is right that usualy, headphones jacks have a switch in them which connect/disconnect a main speaker from the system.
regarding the backup battery, i noticed an interesting thing - if i leave the main battery connected untill it is fully discharged, the backup battery stays fully charged and does not discharg !! it leads me to think that the backup battery is connected with two sets of transistors - one charges it and the other is responsible of supplying it power to the system - may be the second set is damaged and thus do not back up the instrument.

That's the same thing with the Magicians (at least with mine). As soon as the main battery is taken out, the backup battery discharges very fast.
There was a thread about this long time ago. I'll try to search when I have the time, coz if I remember there was some workaround.

Hardware problem tornado

hello all,
after my tornado fel into the water i have a major problem.
sometimes i cant call, and when i try to call i only hear 2 soft "beebs"
sometimes when i am able to call it automaticly breaks the connection and again i hear the same 2 "beebs".
also sometimes people cant call me, but the screen says i have an connection.
i already put a new rom on the phone but it doesn't help so i ques it is a hardware problem.
I have another tornado for spare parst, does anyone know what this is?
maybe the antenna?
thanks in advance

It may be an antenna, but not for sure. You can try to disassemble Tornado and clean antenna connectors with any pure alcohol. If it doesn't help, it's PBA problem.

First you should have disassembled it completely and let it dry in all parts before using it again. Depending on how long it was in the water this may take some time. Taking fabric cloth and pressurized air can get it dry in a few minutes, but only if taken apart. Take care to remove the metal lids on the PBA as well and look inside for moisture.
There are no parts inside that take permanent damage from water if the device is without battery, but if it was on - end even used wet inside - then your prospects are variable. I would guess nevertheless that it should work again after all has dried.

thanks guys for the reply's,
i forgot to say that the phone felt into the water 1,5 moth before i started this topic. and 1 disambled the phone serveral times to make sure it was dry.
so inside it is dry now, but i tryed to use the phone with battery even when it was wet inside, so maybe that its where it went wrong.
what is the PBA? and where can i find the antenna connectors?
i already removed that metal box, and the chips underneath looks verry good. no corosion or what ever.

If you took everything apart already, then you should have seen the antenna connectors. The Antenna is located in the top cover at the back (above the battery cover). It connects via the two spring supported contacts on the upper part of the PBA (Printed Board Assembly). Both parts are gold plated, so it should not be a problem there.
Regarding the metal lids, take care to remove all of these (3). They are located underneath the keyboard (with the OMAP processor, RAM and the M-Systems DiscOnChip) on the same side of the PBA for the Radio and underneath the LCD.
As some chips are BGA soldered (soldered from underneath; BGA = Ball Grid Array), take care to blow with air also underneath (between PBA and CHIP). There is a very tiny gap between these and water hidden there may not dry for along time (if it has reached the area anyway).
However, the 2 soft beeps usually indicate that there is no free channel for you to be served (as far I remember) - you would get this problem with any other handset as well (same SIM assumed). It is a highly temporary problem (just retry) and you will not get evidence if you swap the SIM to another handset and retry there - network capacity has changed in the meantime and you would get a connection with the tornado as well.
If you experience call drops or other different behavior (compared to earlier) it may as well be attributed to a HW problem with the radio part in your device.

at this moment i use my htc hurricane with the same SIM card and i dont have any problems anymore.
so it is really a problem inside the phone. i havent used the tornado for 2 months now because it gets really anoying after a while.
i will take it apart for an another time, an blow some air underneath the chips as you say.
another symptom what i had was that sometimes the GPS connection was disconnected, and that the phone was searching for a signal for a long time.
but when i puted the sim card in my hurricane i dind't had any problems with the signal.
thanks again.

[ 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?

Which component did I destroy? (Almost all lte/hspa+/edge packets are lost.)

Hi,
I replaced the screen of my brother's Nexus 5 and even so the display works perfectly we seem to have destroyed a component.
I managed to connect the device to lte/3g/2g networks (see photo in the attachment) and sometimes a few packets are even successfully transmitted but that's an exception. Usually it is not even possible to load a website within a reasonable amount of time..
Wifi works.
Stock and cm13-caf firmware show the same behavior.
Like shown in the photo the phone is successfully connected to a 4g/lte network.
Phone calls on a 2g-network work.
Any ideas to which component we have to replace? Or any hints on what could give more information about the actual issue?
Thanks in advance!
Best Regards
Michael

Does the original screen still work? If it does, you could try moving everything back to see if that makes a difference.
When you replaced the screen, did you use a where the LCD/frame/glass were pre-assembled?

Thanks for your response.
I had two replacement displays and noticed the same issues with both of them.
(I bought a cheap one first from ebay which had multiple touch screen issues and only after that bought a way more expensive original replacement unit.)

Hmm, hopefully, it is not a motherboard issue. I would suggest trying the old screen is possible.
Another part that may affect signal would be the USB flex port cable. The other pieces that attach to the motherboard are the camera, headphone jack, USB charging/data cable, and battery.

We completely destroyed the old display unit after removing all other components except for the battery. This made it easier to bend it and remove the battery without damaging its enclosing.
I'm afraid it might be the mainboard but was hoping for a cheaper solution . The usb board is still a possibility since it routes a quite a few signals between components.... Are there some schematics of the device available online?

Haven't seen any schematics.
I guess you didn't use a hair dryer to warm the adhesive before using a spudger to remove the battery.
Examine the USB flex cable to see if there are any breaks.
If you get a phone with a smashed screen and working internals, you should be able to get the phone working.

I wasn't sure if heating up the battery is a good idea and since the old screen has already been damaged I really didn't care if it's even more so...

Heating the battery is fine as long as you keep moving the hair dryer around. The battery just needs to get warm, not hot. Also, you would heat it from the front of the phone, not the back.

I bought a Nexus 5 with a damaged display unit online and used its mainboard and antenna cables to fix my unit. Everything works again. Seems to have been something on the mainboard but I have no idea which component exactly.

Thanks for updating the thread with your solution.

How can i test if an android phone speaker is working (re wiring it to something)?

So this may be kind of a weird question, or could be kind of an advanced question.
Lets start with the backstory first,
I got a vernee thor (the first model) 2 years ago,
a month or so ago I started having some serious battery leaking problems (very powerful smell of acetone and ether) after I changed the battery of the phone everything was working ok except the back speaker which doesn't want to work (i tried to reopen the phone and see if by removing the speaker and re apply it to its position will solve the problem but no luck) and i was thinking that the problem could be in 3 parts, the flat flexible cable tape that connects the two main boards of the phone, the charging board or the speaker itself.
now my question is what is the easiest way to test if my phone speaker is working, i know i can remove it from the phone and it was two poles that connect to two pins with just some force power (charging board --> speaker it self).
any idea on how to test something like that without just using another identical phone board ?
tldr: phone speaker doesn't work where is a good place to connect it to see if it is broken or not.