6625WD headphone jack

Hi all,

wonder if anyone's using the headphone jack at all?

I'm using my mp3 player's headphone, and when there's nothing playing and even though I have my volume on pretty low, I can still hear the buzzing sound in the background..

any ideas? Anyone have similar issue?

 

I get noise in the background of mine. Try moving/touching your screen - see if that makes an audible difference?

 

Hey it does! Especially when I maximize or minimize windows on my screen... somewhat irritating. Even if I turn the volume to mute I can still hear it quite clearly.

Sounds almost like the sound card's contesting with the data sitting on the same Bus.. thought the HD Audio specification from Intel should prevent issues like these.

 

It sounds like you've got a backlight inverter problem. Does this problm appear when you are running on batteries only? I have had similar problems with a Dell a while ago, I found that running the screen on either full brightness or 1 up from minimum cured it - but only on battery power as that was the only time I ever experienced the noise.

 

Actually i'm using the AC mains all the time.. maybe I should make a recording of it... it is quite loud.

How would inverter interfere with the sound?

 

Is your power outlet grounded? There can be such interference otherwise.

Also this is a common problem with integrated audio cards. I'm going to purchase the Creative X-Fi audio card. Heard that using that card, can fix this issue. And also provide MUCH better sound quality ofc

 

Totally, was thinking maybe getting one of those external sound etc, was going to purchase some speakers for this laptop, but the source will need to get sorted out first..

 

I have the problem on battery power and with ac adapter, and had a ground loop too, which has been eliminated (ie, definately not a ground loop pronlem).

 

I had this problem a little bit on my old Acer laptop, and now it is a bit worse on my new 6625. I think what was causing it was (on XP), the Wave volume being set too low, and the Master volume being high. Raising the master volume also made all the background buzzing and whirring louder, so what I did then was to turn the wave volume right up, and have the master volume low.

Vista doesn't have it like this, and I did try turning the volumes down but the buzzing was still there, so what I did was turn the volume up high, and then connect a hardware volume control into the jack socket, and then turn the volume down to an acceptable level. And this minimises the effect of the buzzing. You can also just turn down the volume with your headphones if they have a built in voluem wheel.

 

I think it's hardware design issues rather than anything.. as I've tried to mute the volume and still able to hear the interference.

Luckily using their own speakers you can't hear them, guess I need headphones with higher impedance or something...

 

i have that same problem on my 6625WD too but i found out that if you put enough preassure on the "Powered by nVidia logo", the interference stops or is much much lower. Probably it's related to a component that's right under that logo.

Also, it seems that the buzzing is lower when you have darker colors on the screen and stops completely when the screen turns off.

 

The sound card is located under the (on my laptop non-existing) logo.
And the sound is most likely caused by screen yes.

 

LOL, indeed it exhibits the exact same behaviour. Wonder what could be wrong.. maybe if we can insert a layer of insulation or make it permanently pressing then at least it wont' be this annoying.

Sprint:

As you say you don't have the logo sticker, do you get less interference? As the sticker's probably metallic etc....

 

Hi there!

I recently got my Znote 6625WD and sadly discovered that my headphone plug is not working at all! (where the red light is coming out)
There's JUST the disturbing noise, and the speakers don't go off when I plug something in.
So, a very first dissappointment for the first day. I thought, I would be among those who don't have one of the many many problems with the Zepto Laptop, but here I am now.
So I think of sending the notebook back to repair (I do much multimedia processing in an office and need the headphones to not get everyone else in the office disturbed when editing videos or audio stuff or just listening to my music at work)
I'd also like to connect the Laptop to the TV to watch movies, so again a working headphone jack would be good.
or get an external USB soundcard taking away one precious USB port.
I was also quite shocked about the loud noise. I thought my old dell would be bad, but this is really unbelievable.

Or is this a known issue or workaround?

 

Just resolved this problem by installing the latest realtek-driver from the Zepto ftp page after I finally found another thread about this issue (Shame on me, I should have looked closer before!)

The noise still persists, but when listening to music it's not noticeable so much. Otherwise when listening to spoken word content.

And also in my case, the noise almost ceases completely when I press a little bit below the "nvidia" logo.
I wonder if this issue could be resolved by Zepto in future builds by just putting SOMETHING right there that causes the same pressure on the audio parts as when you apply pressure to that area. Like a hankerchief or whatever.

Maybe there is even a hardware-hack for that? But I won't dare open my notebook...

 

http://www.realtek.com.tw/downloads...=24&Level=4&Conn=3&DownTypeID=3&GetDown=false

They do update it rather frequently, I'm using 1.88

Though this problem does seem more like hardware issue rather than anything.. *sigh* just another small irritating thing...

 

So why do they even use such a good soundcard? It wouldn't even need to be 16 bit, because the lower 8-10 bits are renederd inaudible by the huge, huge, huge amount of noise!
I could never have thought that any soundcard would produce more sound than my old dell and even there noise from the headphone jack was a big discussion.

It's such a shame, because the realtek card seems to be way better than the standard AC97 chip which is a cheap-ass solution for most other manufacturers.
It's like building a nuclear plant just to power a simple light bulb which is then painted over with black color, so you dont' even see the whole power.

Guys, this is a MULTIMEDIA notebook! This means audio ALSO!

It seems that the headphone output is just as loud as the speaker output (like it's the same amplifier settings), but that headphones don't need such a lound output.
A solution would be to reduce the output signal for the headphone jack.

I even thought of building an own solution with headphone jack/plug and resistors, but it would be difficult to either find matching resistors that equally turn left and right down. Maybe a potentiometer would help to balance at least one side... seems like I'll visit the electronic shop soon!

 

NinaMaya - try moving/touching your screen, and I think you might find the sound disappears altogether. I'm sure the noise is from a hardware issue.

I'm not especially keen on the sound from the Realtek anyway, but if you are using it then do try this to see if it allows you to eliminate the noise.

 

Well to be fair, AC97 is about 11 years old, these newer chips which belongs to HD Audio specification ( http://www.intel.com/standards/hdaudio/ ) are basically successors to the AC97 standard proposed by Intel.

Since time have passed, so it's only natural that the technology advances..

Unfortunately, so did the margin of these notebook makers so cut cornering workmanship appears rather prevalent in the recent years.

Just to show that even with the best intentions and designs, if the execution/operation is done poorly, the end result can still be disastrous...

 

I tried that yesterday, it just gets a very very little bit more silent.
What really helps is to apply pressure to the lower right part of the notebook. But that can't be a solution.

I'd really just open the whole thing and put something inside that substitutes that pressure for me.
Could it be, that the notebook case works as a shielding but only gets contact when I push it down hard enough?


And Allialo, yes, it's a shame that sometimes great technology gets wasted by trying to safe money on the wrong parts (I think that's it after all).

 

After all this thing could be a solution:

Just turn down the volume (and the volume of the noise also). The output is so loud anyway that it still be loud enough. I hope it works. I found one for about 3 Euros and will order it