Hello
Please help me!
I have connected the phone to amplifier which is broken and now i have problems with my stereo output - only one of the 2 chanels work and i think that the sound is with lower quality.
Can you please tell me what i have to find to repair it and is there any connection with the stereo output and the built in speaker?
From where i can buy parts to repair the phone and is it easy to do that?
BTW
I think that the amplifier just have added high voltage to the stereo output of the phone. What may be broken? The chip for stereo(is it only one for the built in speaker and the output?), capacitors or resitors ?
Thanks in advance!
no ideas, or any help?
also when i use headphones(only one of the 2 channels work) and if the volume is not on max the sound is really poor and with bad quality. if the volume is on max, the sound becomes better, but the quality still is not like before.
please tell me what may be broken? the chip for audio(where i can find one) or capacitors and resistors?
You have a virua
Evo3D.
This article is really useful to me
Related
Hi
I have searched but couldnt find anything before you ask
i was hoping there is an ap out there that can increase the volume of the sound that comes out of the ear piece.
Any one heard of anything?
thanks
Tim
digitaly sound have a surden number of bits often 16bit
mex volume would then be 32500 and -32500
if you inc the sound more then the bit resolution then it clip
and the loudest notes will just they as they are because you cant
really inc them more then they al ready are
when those sampled bits comes to the digital to analog converter which feed the headset they are made into a sound signal
so you cant really do it unless you convert all sounds on the fly and sounds which already use the full bit range would be cliped and sound horrible
my sugestions is made the sounds you require to be louder, louder on the pc and test the results to see if the sound gets a poor quality by the inc
or get a headset with an amp (those require batteries) and let them inc the volume of your signal
Hi,
I've noticed an audio output distortion of some frequencies when listening to music, in the sound coming out of the 2.5mm jack.
When the speakers on the device is used, there is no problem.
When I plug the headphone, there is sound output, I hear the music, but some frequencies are lowered so much that I can't hear the singers voice. When I unplug, the speakers work fine and I can hear the singer again.
In additon that, most of the background instruments can be heard as well as the backvocals, if they are female.
It's like the sound is being processed (like an equalizer) when I plug the headphone, some frequencies are lowered, given some echo, reverb etc.
I don't understand how this is possible. I am thinking of a hardware contact problem, but it's hard to believe if this is a hw problem.
I've tried two firmwares (2.16.x, 2.25.11.1) and made hard reset also. No result.
Any ideas?
Note: I can try to actually record the sound tonight if anyone wants to hear.
Best regards,
Fast
maybe try a different headset first?....could be a short in the cable, because what you are describing is a phasing issue with the headset speakers......
Thanks for the response Kiru,
Just tried a different headset plugging it into my HAMA 2.5 --> 3.5 adapter. same result.
I will try the original headphone came with the Wizard. If the source of the problem is the HAMA adaptor, this should resolve it. (i hope it is)
Could you please elaborate on the "phasing issue" ?
fastguy said:
Could you please elaborate on the "phasing issue" ?
Click to expand...
Click to collapse
Hmm....how can I explain.....Let's start with the speaker itself. A speaker has two terminals on it, one postive and one negative. What we want is to have the positve from the source (ie. Amplifier) to the positive terminal of the speaker, and the same for the negative. Since there is a pair of speakers, we want them to be hooked-up correctly. If hook-up correctly then the speakers are in phase with each other, and this is called constructive interference, hence in phase. When ONLY ONE of the speakers is hooked-up backwards, we call this destructive interference, hence being out of phase. Being out of phase causes frequencies to cancel or sound muffled. Hope you kind of get what I mean, but I highly doubt that this is the problem with headphones because heaphones nowadays rarely get manufactured with this problem. This is just the electrical part of phasing. Also, you can have one speaker, and it could sound out of phase because of the distance it is firing from walls or the shape of the room due to the reflections of sound, this is called acustical phasing.
A short in the cable, meaning the positve and negative wire are somewhat touching, can cause a similar effect, and I suspect that this is problem for you. As you now state that you are using an 2.5 to 3.5 adaptor, I would agree with you that most likey you have a faulty adaptor.
Hope this helps! and keep me posted!
Hi again,
Thanks again for the explanation Kiru, I know a bit of electronics so I got the problem.
However, I'm now home and tried to original headset, no result. The same problem is existing.
This makes me believe that I've broken something inside the Wizard which shortcircuits something. I'm very dissapointed.
Maybe the only way is now to buy a stereo bluetooth headset...
Thanks for your help
Any reason that you can't return to orange for repair/replacement?
PROBLEM SOLVED
I got this unit from priceminister second hand. It's origin is not France, I don't have a purchase receipt neither.
By the way, I solved the problem. I disassambled the unit using the info given in one of the posts in the forum. I played a little with the contacts, there was oxidation in the outer solders, i cleared them up etc, it 's working at the moment.
I'll post some pictures afterwards.
and I hope i will be able to reassamble it, I already have a piece of thing which I don't know where to put
I got the same problem. Was working fine for 2 months then all of a sudden the headphone plug is all messed up. Volume is all distorted I can sometimes hear a song but quality is no where near the original. Usually everything sounds echoed. I think something is wrong with the plug
I've had the same problem. The headphone jack on the Wizard is crap. If you have your Wizard in your pocket with an adapter, as you move, the adapter pries back and forth on the jack. This breaks the cheap jack.
If you want to listen to your Wizard as an music player, you should invest in a nice set of bluetooth headphones and only plug the jack in when the wizard won't be moved around a lot, like a home or car stereo.
I recommend Nextlink Spider headphones. They double as a headset and you can navigate through your library with the button on them.
MUSIC Speed
I got the same problem here. The SE stereo btooth headset isnt yet in our place.
Anyway, i experienced this one with ROM2.16 Imate. The sound speed or music speed seems to being played faster than normal. But when i tried to plug the 2.3-3.5 adopter and quickly pull it out, the sound is played in normal speed then. strange.....
are you all sure that the wizard has a stereo output ? I thought it was mono.
Anyway you can get earpieces and headphones with a 2.5mm jack so you don't need a 2.5-3.5mm adapter.
Maybe the contacts on your jack are not connecting properly with the internal contacts of your adaptor
I have a noise problem, I don't think it's quite the same as previously posted noise problems.
I get a hissinh/static noise from the phones speaker (on the back) and from headphones. It is only happening while the phone plays sound (and some seconds later). Every time I up or down the sound with the volume keys, there are noise coming out of the speaker for some seconds. Please report if you have the same issue, especially eith headphones.
I could live with the speaker-noise, it's not that big a deal.. What's worse is it is in the headphones. I have a quite low impedance set of in-ear plugs from creative (I am able to hear the hard drive spinning up in my old mp3-player, but no constant noise) Crap. I want to use the phone for music listening. Question is: software or hardware related? Using JF 1.51 ADP for the record
I hope it is hardware related - I bought mine off ebay, allthoug brand new and everything, I don't know how I would go about getting it fixed/a new one with no receipt. Shipping it back and forth to England isn't really tempting either.
It's not just you, it's piss-poor rf isolation on the audio outputs. Listening with bluetooth doesn't solve the issue either as bluetooth has its own noise.
Yeah, I have yet to listen to a decent pair of BT headsets.
So this is a known problem, and it's definitely a HW issue? The fact that it's only there when sound is played, and is also there with a headset (where shielding around connectors is not and should not be a problem at ALL) made me hope this was softwar related. Argh, what to do then? The sound quality despite this seemed prety decent, although a headache today prevents me from really listening to music and say for sure. Shame.
*Pondering refund options.*
Any chance of isolating around the connector and fixing this, if it is "airborne" caused noise, or will the noice enter the equation before the connector (cabling, sound chip)?
I will try with a relatively high impedance headset (sennheiser 555) and see if it is better there. But can't take them on the bus anyway. But a couple of Ωs could always be added somewhere along the cable and might do some good. Have to have the sound at the lowest levels with the in-ears. Maybe a software fix to lower the volume output will help? Or won't it, if RF noise is the cause?
red: I will buy this item and hope it helps. And will look into lowering the volume output when using headphones as well. Should be possible (atleast it usually is with tweaks in WinMo.)
I have similar problem with HTC Magic: forum.xda-developers.com/showthread.php?t=633035
Here is one more post regarding HTC Jade: forum.xda-developers.com/showthread.php?t=463365
Does anyone know if it is possible to repair/replace the headphone jack on the Ideos X5?
Unfortunately I dropped it end on (no headphones in at the time) and now the channels now produce some extremely odd audio where everything sounds like it is underwater.
You too? I'm also having this problem, so I opened it because I heard something moving inside, It was a coil, part of SMD components, for filtering the sound on headphones. I found one coil but the 2nd is missing
I soldered it back to board, and sound is little better, but there is still too much echo, low quality sound. But, the internal loudspeaker plays audio OK.
I'm planning to take it to service, but I think they will wan't to change the whole board, usually they don't do this kind of repairs and tuning the components. Since I opened it, the warranty is gone, so this could cost quite much and it will take at least 2 weeks to repair.
Does anybody know what is the inductivity of these 2 coils in the picture?
bump.
Friends obviously a LOT of Nexus 7 owners have complained about sound issues, from obviously defective units to the simple issue of volume being inadequate for use
My question is what is "normal" on this device? anyone know a db / sound-pressure at radius specification?
other than obvious noise through a speaker, how does anyone know if their unit is "normal" ?
cognus said:
Friends obviously a LOT of Nexus 7 owners have complained about sound issues, from obviously defective units to the simple issue of volume being inadequate for use
My question is what is "normal" on this device? anyone know a db / sound-pressure at radius specification?
other than obvious noise through a speaker, how does anyone know if their unit is "normal" ?
Click to expand...
Click to collapse
My speaker is defective, and in need of going out for repair/replacement, but the volume seems like it will be fine for my needs once the rattle/vibration is fixed. It only happens at certain frequencies, so I can still get a solid sense of the output level.
Trying to determine the exact db at a specific distance isn't going to do you much good, because it will be based on either the loudest frequency, or 1khz. The 1khz rating is somewhat reasonable to use, but what if there's a massive spike there (and on small speakers, there generally is). Say it could hit 95-100db at 1khz, it still will likely only hit about 5db at 40hz. See where I'm going with this?
I don't know, I could grab my spl meter, and run a whole series of tests at 1 meter in a quasi-anechoic environment (though it's really cold outside here), if you're really that keen on finding out precise measurements of the frequency output over the 20-20 range. Seems a little overboard for a 7" tablet though. I would consider the volume more than adequate for listening to the news, or voip calls, but there isn't a tablet that exists where I would be happy with the sound of the speakers for music.
Of course, I'm kind of picky about these things.
From what I see in the boards, there are three types of view points on the output.
1. Plenty good for normal use.
2. Terribly low for music.
3. Flat out broken, so you can only turn it up half way (the second is my current situation).
Also, don't forget that the speaker is in the back, so you'll have to keep it turned around or bouncing straight off of a hard surface, to get the full output to your ears. Some cases may also significantly reduce the output as well.
more questions: if we presume/conclude "there is a volume problem even when the speakers are not defective", then two follow-on questions:
1. is it JUST speakers?
2. combo of lousy speakers and a problem with the DSP/firmware/software/etc.... ?
I think it is 2 but I'd love to hear a root cause on the whole issue.
with SOME music sources I can get through the speakers a little bit louder response, at FULL volume max'd - than I can with MX Player on a video with the Player set on Volume Boost [200%].
in the case of MX Player, its basically worthless through the speakers both from a dynamics standpoint [obvious...] and just volume unless you are in a stone-quiet area and are craning toward the device to hear.... and you have acutely good hearing.
Then, if one is unconcerned about warranty: anyone have suggestions on replacement speaker that perhaps would help?
cognus said:
more questions: if we presume/conclude "there is a volume problem even when the speakers are not defective", then two follow-on questions:
1. is it JUST speakers?
2. combo of lousy speakers and a problem with the DSP/firmware/software/etc.... ?
I think it is 2 but I'd love to hear a root cause on the whole issue.
with SOME music sources I can get through the speakers a little bit louder response, at FULL volume max'd - than I can with MX Player on a video with the Player set on Volume Boost [200%].
in the case of MX Player, its basically worthless through the speakers both from a dynamics standpoint [obvious...] and just volume unless you are in a stone-quiet area and are craning toward the device to hear.... and you have acutely good hearing.
Then, if one is unconcerned about warranty: anyone have suggestions on replacement speaker that perhaps would help?
Click to expand...
Click to collapse
#2
When I connect the Nexus 7 to my car stereo inline, via the headphone output, I get mixed results. I generally have to crank the car stereo way up, which can cause voltage induction through the 1/8" to RCA connector, if I have the Nexus charging simultaneously.
Now granted, induction of this sort is not something that is a Nexus only problem, and has more to do with the quality of cable shielding. If I move the USB charger so that it doesn't line up with the headphone output wire, the problem is reduced.
However, the issue is more that the headphone output is somewhat inconsistent, so that means that some audio will require me to turn the stereo to a level where the inductance is moot, and sometimes I will have to turn up the stereo to the point where charging and listening to audio through the car stereo is just brutal. Of course, you weren't asking specifically about car audio, but it leads to my theory.
Now, here in lies why I think it's you're "#2". If it were purely hardware, there shouldn't be that great of a difference from the headphone jack, assuming relatively similar reference volumes from the source. So software would seem to be at play here, as well as hardware.
As far as the speakers go, I don't think you'll be able to replace the internals. They're a very awkward shape, which probably doesn't help, and there is very little room in there.
Your best bet would be to find out if there is an external speaker option which can easily work for tablets. I listened to an Ipad 4 last night, and it wasn't good either. I think you have to consider the size of these things. A speaker the size of your pinky nail, can only be asked to do so much. Trying to cram one the size of your thumbnail in there, won't do much more, and just wouldn't fit.
now we're talking real issues. thank you.
yes, compared to any of my other android or pc or apple devices this one is uniquely odd
all as you have noted. inconsistent, output device matters, etc.
I admit I'm skewed by the ipad Mini - if you get a chance, sample that in terms of speaker performance. I have not access to Ipad 4 in my shop.
in my case, there is no distortion that I can observe/detect with my ears - clear enough, but there's not much substance there, oddly except for notifications which are crystal clear at full volume, if not particularly loud [my ancient droid optimus is louder - obnoxiously so which is why I keep it on vibe].
bladebarrier said:
#2
When I connect the Nexus 7 to my car stereo inline, via the headphone output, I get mixed results. I generally have to crank the car stereo way up, which can cause voltage induction through the 1/8" to RCA connector, if I have the Nexus charging simultaneously.
Now granted, induction of this sort is not something that is a Nexus only problem, and has more to do with the quality of cable shielding. If I move the USB charger so that it doesn't line up with the headphone output wire, the problem is reduced.
However, the issue is more that the headphone output is somewhat inconsistent, so that means that some audio will require me to turn the stereo to a level where the inductance is moot, and sometimes I will have to turn up the stereo to the point where charging and listening to audio through the car stereo is just brutal. Of course, you weren't asking specifically about car audio, but it leads to my theory.
Now, here in lies why I think it's you're "#2". If it were purely hardware, there shouldn't be that great of a difference from the headphone jack, assuming relatively similar reference volumes from the source. So software would seem to be at play here, as well as hardware.
As far as the speakers go, I don't think you'll be able to replace the internals. They're a very awkward shape, which probably doesn't help, and there is very little room in there.
Your best bet would be to find out if there is an external speaker option which can easily work for tablets. I listened to an Ipad 4 last night, and it wasn't good either. I think you have to consider the size of these things. A speaker the size of your pinky nail, can only be asked to do so much. Trying to cram one the size of your thumbnail in there, won't do much more, and just wouldn't fit.
Click to expand...
Click to collapse