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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.
hi, i got an imate jamin and i need to replace the audio jack were the handsfree pug in, do anyone know where i can find to buy this part please or if anyone had the same problem how did you solve it.
thanks guys!!
Dodgy Audio jack
My audio jack plug works fine BUT when I unplug the headset, the phone stays in headset mode i.e. no sound from the speakers. If I plug/unplug the headset a load of times it eventually goes back to normal.
Any ideas. My solution is never to use the audio jack!
Audio Jack
I've had two M600's which have done exactly the same thing, both replaced by Orange, I've now upgraded to an M700 and unlocked the old M600 with a PAYG sim and guess what that one has now lost speaker sound so that three with the same fault and this M600 has never had a headset plugged in.
Has anyone else had similar problems?
i had the same problem othillo before it broke so be carefull cause your is about to brake too, i mailed imate and they said the only way to fix it is to send it to them in dubai.. not relally keen to send it there .. but till today i havent find ther part any where it seems that imate dont send out parts ... as soon as i find an alternative i will post it here..
Is this problem caused by the connector itself or is it something else? If it is the connector I can buy a new one at the local hardware store and modify it a little bit to make it fit in my S200, probably going to replace it with an 3,5mm jack if that is possible...
it is caused by the connector in fact htc the original makers of the prophet on there new models they changed it to a usb connector for the handsfree i changed my connector many times with regulas 2.5mm connector but the sound doesnt work properly. what it does it comes out with out bass then when you push the talk button on the handsfree sound comes out good. another thing i noticed is if when you insert the jack plug in the connector and you pull it out a little bit the sound comes better and the talk button works, i know for fact cause i tried it that its not from the handsfee cause i tried it on another device and work properly. the actuall connector for them is different from what you find to buy even if you plug in normal 2.5mm headphone sound doesnt come out right . if you manage to make it work and modify the connector please post it here so who got the same prob like me can have an idea how to fix it... thanks
Audio Jack
Here is what the problem is:
Audio jacks have what is called a normally closed contact. Each contact point actually has 2 parts. In the closed (no headset) the 2 part of the contact point make contact (shorts). This enables the signal to pass through the jack to the phone speaker. When you insert a headset, the 2 points open (break contact) and signal only goes to the headset.
I'm talking from experience as a sound engineer for over 30 years and this is usually the problem 99% of the time when it comes to these type of jacks. One of the contacts (usually the ground when no sound or mic at all) breaks or can no longer "spring" back. I haven't opened mine yet but fully expect this to be the problem.
audio jack
hi jsapper, i got what you saying and your absolutly right .. the thing i replaced mine 2 times now been done by a technician who fixes phones/pdas the thing with the connectors i replaced the device doesnt work properly sound comes out with out the bass and the talk button doesnt work .. i guess that the original part got some extra connectors or most probably the pins are switched around..
do you know if there is any special connectors for them...
I have a similar pb with my S200:
After running tomtom during 2000km installed on my motorbike w/ a 2.5mm headset, sound seems to no work anymore (neither back or ear speaker), I suppose that vibrations against jack connector are responsible.
With a bluetooth or wired headset sound works.
I have soft/hard reset, upgrade to last WM5 rom, upgrade to WM6 rom, I have tried to get in/out a 2.5mm jack connector without any result.
The ring facility is working (w/ or w/o 2.5mm jack connected), so I can say that the back speaker is working.
I am looking for a solution too...
nb: I have my back speaker + screen replaced one time after 2months.
Dean.
Have you try resolder the Connector?
it was to damaged to be resolded
Hi everybody,
I aswell have this kind of problem from time to time.My solution is quite simple.You have to use the original 2,5" jack with the 3 black "dividings".(sorry for my english) This solution reduced the problem dramatically.If the problem starts now, just plug it in and out a few times and it should work again.
Cheers
Phone Jack is a mechanical mess ...
Same prob, used the headset, rear speaker dead. I opened the prophet, unsoldered the jack and found it misconstructed.
The body of the jack is plastic and not capable to withstand the forces of a plugged in headset.
There are two integrated switches - which - when headset is unplugged are closed and deliver the signal to the speaker. one of the switches does not close anymore when the headset is unplugged. My first solution was to unsolder the jack and bridge the contacts 2 and 4 as welll as 3 and 5.
The rear speaker functions now and I can use the phone.
Next step will be to find a jack solution on the market to finally solve the problem. I will keep you informed!
thanks buzzi will be looking in here... for your post!
i had the same problem with my audio jack and i searched many forums for a solution. the only thing i can say: if you really want to use it and you want go back in normal mode after unplugging, take a little needle. if you look at the audio jack (USB is left to it) you have to stick the needle in the right side of the jack somewhere an search for a little contact (the first time hard to find, the second time easy) and try to push it a bit to the left. so the prophet goes back in normal mode. it sucks but i didnt find another solution...except for buying a bluetooth headset and use software to hear music over that (for mono headsets u can use a programm calles BTAudioToggel, but make sure u use the Toggle software, because there is another one called BTAudio, it sucks because it costs money and doesn't work for me so well)
Greetz
Friends,
My prophet has exactly the same symptoms. However, I opened up the phone and carefully examined the jack. It is crap, sure, but at least on my phone it is not at fault. I tested with a continuity meter and the contact mechanism was working perfectly. Those who tried this measure without success read the following thread:
http://forum.xda-developers.com/showthread.php?t=281331
In my case it is definitely a problem with the speaker, and it seems to be eqaully common. It seems that there is more than one problem dogging the speaker of ths model.
mine's got the small contact switch problem.
it started last night! SO Annoying. Plugging a friend's original 2.5mm adapter in and out solved it temporarily. Then it went again! I have only got a 3rd party 2.5mm plug, and it took me ages to trip the small switch back with that. I have now got a BT headset on order.
Can't wait for the newer design HTC headphone adapter as I have had this problem with 5 different devices! (Tanager, Typhoon, Hurricane, Tornado and now Prophet.)
would agree with hybrid the needle trick fixed it ran media player so i could tell when it was working again. it was mentioned before that using the 2.5mm adaptor with ibky 2 rings as opposed to 3 causes this problem. I can identify with this as i have been using my dopod h/free with no problems for months i use the adaptor to plug in my headphones one time and get a eap of issues!
i will adapt a h/free to plug in some nicer headphones!
Can i use the USB connection as a handsfree port on my prophet?
Cheers
Hi, Prophet's USB is not a USB hub and thus not usable for connecting external devices - only way is bluetooth ...
thanks buzzi
Hy. I have such a problem that if i plug in a headset to the jack output i have no sound. But if i unplug it, the speakers are ok. I have given in the phone for repairment, but they said it has no hardware problem. So what? I don't think it could be a softver problem because i have reflashed it for a million thimes after this. Can someone please help me?
I have reverse problem. I have sound in headphones, but no sound on external input/output. Except phone rings. Like headphones is always plugged in. It began after using usual 3-contact headphone jack (instead of 4-contact HP with mic). I have no idea what could it be (looks like a short circuit, but don't looks like one)... need extra help! Can't use my mobile phone and it's vital for me.
For sunnyRio there are two possibilities, one is the headphones, you might wel have a pair of broken headphones, try connecting them to another audio source (CD, mp3, computer, etc.), if they are ok then you could have a "strange" kind of hardware failure, I've repaired lots of stuff in more than two decades of work and I've seen the strangest things...
Your headphones connector might be "dirt" inside, it might be suffering from a false contact (very likely if you do plug and un-plug your headphones a lot), this false contact can be very hard to see, I even found a connector that has its pins broken between the PCB (printed circuit board and the connector itself), this was a tough one, this device (was a walkman) have passed by several repair shops first, the only way of figuring out was by desolding the connector.
Generally, inside the headphones connector there's a switch that disconnects the speakers while the headphones are plugged, once you unplug the headphones the speakers come alive again, this switch can even be a "simple" switch, one throw, one contact and can be switching some electronic analog switch, however, it could be necessary to take it to a very good technician to get it repaired, if you want to send it to Italy...
For alexkass84, the front speakers are not responsible for the phone rings, there's another speaker doing that noise.
Your problem could easily be a simple variation from that of SunnyRio or it could the speakers, same treatment applies in your case.
If any of you are relatively confident with electronics you might even tempt yourselves, look for the service manual in the wiki and go for it.
good luck!
kecido said:
For sunnyRio there are two possibilities, one is the headphones, you might wel have a pair of broken headphones, try connecting them to another audio source (CD, mp3, computer, etc.), if they are ok then you could have a "strange" kind of hardware failure, I've repaired lots of stuff in more than two decades of work and I've seen the strangest things...
Your headphones connector might be "dirt" inside, it might be suffering from a false contact (very likely if you do plug and un-plug your headphones a lot), this false contact can be very hard to see, I even found a connector that has its pins broken between the PCB (printed circuit board and the connector itself), this was a tough one, this device (was a walkman) have passed by several repair shops first, the only way of figuring out was by desolding the connector.
Generally, inside the headphones connector there's a switch that disconnects the speakers while the headphones are plugged, once you unplug the headphones the speakers come alive again, this switch can even be a "simple" switch, one throw, one contact and can be switching some electronic analog switch, however, it could be necessary to take it to a very good technician to get it repaired, if you want to send it to Italy...
For alexkass84, the front speakers are not responsible for the phone rings, there's another speaker doing that noise.
Your problem could easily be a simple variation from that of SunnyRio or it could the speakers, same treatment applies in your case.
If any of you are relatively confident with electronics you might even tempt yourselves, look for the service manual in the wiki and go for it.
good luck!
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Click to collapse
I had the same problem few days ago ... and I also noticed that when I pressed the keboard with a little pressure, sound started working again. But whenever I inserted the headphones and pulled out after the use .. there was again .. No sound !
After few days when I had to change the SIM Card, I noticed that the battery was not fixed properly and after fixing the battery properly again, my problem never existed !
Try and let me know please
Regards,
Hassan
That wasn't battery. I'm often used to change batteries (I have two in case of uncharging), so I didn't observed such an effect (tried also to sqeeze keyboard).
So I bet it's the jack contacts. I need ideas how to clean it without disassembling the device (I don't have heeded screwdriver and havo no wish to give it in other hands). Also I couldn't find spare jack for 4-contacts same the headphones with mic. I didn't solved BT problem, so I can't use my Jabra 620 well (mostly I listening to music).
Now I have WM5 and gonna try broadcomm BT stack. Have anyone tested stack for A2DP with WM5? Can you give a link?
Hi!
Just noticed that whatever the music soft I use, if I plug my headphone into the phone, if I move it to the left or to the right, the playback is paused, or it goes to the next track... I tried several headphones, the result is the same.
Very strange.
Could it be because the jack is defective and I should fix it?
Thanks
Have you tried a different rom to see if the issue is still there or even tried winmo to see if the problem persists then. If so then I would say it is the headphone jack.
Nemesis1278 said:
Have you tried a different rom to see if the issue is still there or even tried winmo to see if the problem persists then. If so then I would say it is the headphone jack.
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Click to collapse
With Android, several roms tried (about 10) and the problem occurs on each.
Didn't install WinMo for 1 year now lol, I will try (I need to sim unlock my phone, and the code provided by my carrier didn't work under Android so I guess I'll have to restore the original ROM).
Its not a problem. Itz working the way its meant to. Ie, in original htc music headset, we have option to play pause the song via controls in headset. And it does so by shorting some pins( 4 contacts, shorting different contacts do different things) like old nokia headsets in which shorting the mic contacts accepts/ hangs the call.
In ur case it may be problem with headset. Do u use 4 contact 3.5mm jack or 3 contact 3.5 mm jack? The second one( normaly used in audio players and other music devices ) is/ may not suitable for phones, which normaly have 4 contact 3.5 mm jack. ( the 4th one is for mic connection) the socket in phone is designed so . And if u insert a 3contact 3.5 mm jacked headset, whose jack have same length as of that of 4 contact 3.5 mm jack, will/ may short some pins( normally it wont, but if we move the jack, it will. Notice that the phone will pause the song when we unplug the headset). Thats what happens.
In ur case it may be the problem. And in worst case ur phones headphone sockets may got damaged or oxidised. I said Damaged in the sense that some of the pins inside the socket may be bend. I said oxidised in the sense that the pins get oxide layer in them due to prolonged use or may be due to use in areas like beaches, mines, chemical factories etc.( where do u work/ visit??). If u can handle it, u can open the phone and check the port for these.. and may use some EVAPORATING contact cleaner, ipa, petrol, or even ur body spray to clean it. Use an ear cleaning buds if u need. ( be sure not to wet/ short/ the motherboard.) And keep the jack end( where u cleaned using the above things) under an incandecent lamp so that the heat will dry out the rest of the cleaning liquid.( but not so close to lamp to avoid damage due to over heat- especially take care of lcd benith the pcb).
Hope it will help u.
send from my hd2 @ miui 1.12.2
This has happened to me a lot. I replaced my device 3 times, and it still happens. I bought new headphones and everything and it still does it.
mine freezes everytime i plug headphones in,sometimes the music player starts up on its own then i'll have to take the battery out or reset the phone
showlyshah said:
Its not a problem. Itz working the way its meant to. Ie, in original htc music headset, we have option to play pause the song via controls in headset. And it does so by shorting some pins( 4 contacts, shorting different contacts do different things) like old nokia headsets in which shorting the mic contacts accepts/ hangs the call.
In ur case it may be problem with headset. Do u use 4 contact 3.5mm jack or 3 contact 3.5 mm jack? The second one( normaly used in audio players and other music devices ) is/ may not suitable for phones, which normaly have 4 contact 3.5 mm jack. ( the 4th one is for mic connection) the socket in phone is designed so . And if u insert a 3contact 3.5 mm jacked headset, whose jack have same length as of that of 4 contact 3.5 mm jack, will/ may short some pins( normally it wont, but if we move the jack, it will. Notice that the phone will pause the song when we unplug the headset). Thats what happens.
In ur case it may be the problem. And in worst case ur phones headphone sockets may got damaged or oxidised. I said Damaged in the sense that some of the pins inside the socket may be bend. I said oxidised in the sense that the pins get oxide layer in them due to prolonged use or may be due to use in areas like beaches, mines, chemical factories etc.( where do u work/ visit??). If u can handle it, u can open the phone and check the port for these.. and may use some EVAPORATING contact cleaner, ipa, petrol, or even ur body spray to clean it. Use an ear cleaning buds if u need. ( be sure not to wet/ short/ the motherboard.) And keep the jack end( where u cleaned using the above things) under an incandecent lamp so that the heat will dry out the rest of the cleaning liquid.( but not so close to lamp to avoid damage due to over heat- especially take care of lcd benith the pcb).
Hope it will help u.
send from my hd2 @ miui 1.12.2
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Click to collapse
That's some great information there! Not a problem I've ever experienced, but great information, I've never even thought of that!
Sent from my HD2 using xda premium
Note: TRY THIS AT YOUR OWN RISK, I won't be responsible for your damage or lost of the phone because you just short-circuited your phone or what so ever, I didn't point a gun on your head and demand you to do it I'd just explored this method randomly and pure randomness, nothing else, and a brave heart maybe btw, i can't imagine how to make the phone short-circuit with just bridged the gnd and mic plate of the headset.
Since our phone are stuck in OMTP connectors forever and where newer phones/tablets/phablets are now having CTIA connectors and producing more and more CTIA standard headset everywhere. It is hard to find a OMTP standard headset nowadays (except if you want to buy Nokia phones, i mean asha series, not lumia, asha series usually implement OMTP standard connectors and headset while Lumia-s having CTIA, but who would want to buy a phone just for a working OMTP headsets, seriously... ). When you connected a wrong standard headset to your phone, you will know whats went wrong, like the sound lose the bass and vocal, mic doesn't work, handfree button doesn't work and so on...
And if good quality earphone (additional condition that's you are an audiopile, sounds quality means everything to you) out there just cost too much for you but you have a good quality CTIA headsets (eg: Samsung, Sony OEM headsets) plus you don't want to do the soldering work to change CTIA to OMTP by exchange mic and gnd cable.
Ladies and gentlemen, allow me to introduce to you a way to convert your CTIA headset to a working earphone with only 1 piece of 1cm wire (when i say earphone, of course it mean the mic will not be able to function. Why? good question, continue reading)
HOW to DIY:
1. try to grab any wire in your house, or just cut out a cable from any of the malfunctioned wire keyboard or mouse, then cut out 1cm of copper wire from the cable, you may make extra 1cm or 2 to do the hanging work.
2. use a pliers to "apply pressure" on 1 side of the tip to make it thin just like a paper, make sure the thin wire length must not exceed about 0.5cm, the sole idea of this DIY is make a bridge to connect gnd and mic wire to cheat the phone that you just connected a earphone, and this is why the mic function will be gone.
3. then bend the thin wire tip to 90 degree, or any degree to suit you on how to hang that wire on the phone's headset connector. Again, make sure your thin wire length must not exceed 0.5cm!!!
4. insert the thin wire tip into the headset connector, not middle of course, i mean "stick to the wall"
5. the remaining wire is up to you on how to hang the wire but the thin wire must be "stick to the wall" of the headset connector. Use paper tape or glue or whatever you can get to stick the wire with your phone, don't let loose. Use your imagination.
6. then try connect your CTIA headset to your phone and play some music, check for sound quality, Is it the same sound quality that you get with other newer phone. If you found it hard to insert the headset jack, "apply more pressure" on the thin wire tip, make it thinner then test again.
7. if it works, congrats, you just made it there!!!
** if you are unsure how it does, check the picture or leave your comment(not pm), share what is not being clear in this post, allow me to refine the details of the procedure, XDA forum is all about sharing ideas....
this same procedure could convert OMTP headset to normal earphone in CTIA standards connectors too (theoretically). OR should I name it universal CTIA/OMTP to earphone converter trick?
ps: if you have a better vocabulary to replace "apply pressure" please suggest me or you found this will cause catastrophic damage on our phone, please do notice me about it!
info: i made this work on my Xperia Neo and China made tablet (RK29xx tabs) which also using OMTP connectors and i'm using Lenovo and Samsung OEM headset to test on both of them.
what is CTIA/OMTP? what are the difference between them? read: Phone_connector
This works for my Xperia NEO! Thenks Man :good: