how to fix possible hardware problem about earphone output? - Xiaomi Redmi Note 7 Questions & Answers

Hello everybody.Yesterday i faced a annoying problem on my phone.When i get my phone from the desk i saw there is some water drops in 3.5mm earphone jack.I carefully tried to dry it and clean.But unfortunately it doesn't work.Now i think it got a short circuit on the board.When i connect the earphone on the notification bar it shows earphone plugged.but whenever i try to listen something (I mean whenever the phone tries to send some current to the earphone) phone immediately stucks and reboots.I think a component short circuited or burnt.As i know earphone chip and the jack is mounted on the mainboard.It is not a seperated circuit right?Can that problem be solved by repairing or changing any component or should the motherboard be changed to fix it?Thanks.

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Disabling Headset

Hi to all,
as seen in my previous post my jasjar is thinking the headset is still plugged-in even if not.
Tried all, including reflashing. nothing. The fact is that in call the speaker on button doesn't work. I have no sound coming from the speaker, unless some ringtone or stranger things (playin' mp3's nothing but during play having an incoming call switch on for few seconds the mp3 song then stop starting the usual ringtone)
I know it's an electrical problem in the jack, but i was wondering if there's a possible to disable at all that jack. I was looking into the registry without luck.
The problem is that the speakers are working, it's only the jack that think is still plugged-in.
I'm not interested to use the headset so is there any way to stop JJ think about the jack connector??
any ideas?
--
so long and thank for all the fish
--
matteo
I think this is a hardware problem..
I think the jack connector has a sensor/mechanical switch that tells other hardware weather to activate headset circuits or not..
I know it's an hardware issue.
At this moment my jasjar is playin fine with a stylus inserted in the jack forcing the jack a little up.
I don't wanna send it to repair caus i have to wait a minimum of 1 month here in italy.
i wanna open my device to see what's wrong, anyone knows hot to open without problem or if it breaks the warranty?
any suggestions?
Opening your device will void your warranty!
The way I see it, there are two ways to resolve this problem:
1: Take a paperclip or a knitting neelde and do what you do with the stylus, only make the change permanent.
This may result in a broken jack connector and no way to use the headset.
2: Get it repaired (under warranty?) by a certified repairshop.
thhere is a llink in this forum to the htc technical manual . it is not easy to take apart and will void your waranty. the same happened to my phone it had to ggo back to tmobile
I've had the same problem with my Himalaya...
just jammed the headset plug back in and out, and the problem was over... Seems the tip of the plug doesn't allways correctly reenables normal audio out...

WM2K5 carkit audio problem solved, kinda :-/

Hi all,
recently, my mda2 fell down which resulted in complete loss of audio through speker/mic.
But then i discovered that all audio went throuh the carkit when plugged in - before that, only the phone got through.
The device hit ground on the bottom-left side, where the earphone jack is seated - well, not really a solution, but maybe a hint.
Anyway, I would not recommend to throw your beloved himalayas to the floor, as my current mda's precedessor did not survive that (accidental) procedure.
Take care...
earphone jack is damaged. I have the same problem you have to open your device and check earphone solders to xda motherboard.

audio jack problems

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

Jack output no sound

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!
Click to expand...
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?

Probleme with my audio connector

Hi Guy's
I have Probleme with my audio connector he won't work
how's that probleme happen to me , Last Night my friend connect my phone with amplifier And he work good but when i back to my home and trying to lisent to music it's stop working and if i plug-in my earphone like nothing happen no Detecting no logo in statu bar , music work but in the back speaker and i wish to know if there an resistance in side Connector to stop any high tension for save motherboard help me to know what happen

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