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3 Posts

05-14-2019

DE

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  • Message 11 of 23

Re: T490 Static Hiss/Noise from speakers

2019-05-26, 13:15 PM

So I just updated to the new bios.

 

It doesn't hiss anymore as long as no operating system is loaded.

However in Windows I still get the hissing.

In Linux it doesn't hiss when nothing is played. I can still hear it while playing quiet music. It just turns the audio chip off much faster when I pause the sound. With normal music/video volume the hissing is not noticeable anymore.

 

So the issue is still there but it is not nearly as annoying as before. I'm not concerned about noise while playing music. I just want silence when not playing anything.

 

 

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3 Posts

05-01-2019

BY

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  • Message 12 of 23

Re: T490 Static Hiss/Noise from speakers

2019-05-26, 17:38 PM

Thank you, BIOS updated, the noise stopped

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4 Posts

02-20-2014

DE

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  • Message 13 of 23

Re: T490 Static Hiss/Noise from speakers

2019-05-26, 17:40 PM

Good to hear that the problem got reduced, but sad to hear that there is still a noise in windows. Lenovo, please fix this :(

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3 Posts

05-01-2019

BY

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  • Message 14 of 23

Re: T490 Static Hiss/Noise from speakers

2019-05-26, 17:42 PM

I have windows 10 1903 installed, now there are no problems with noise

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5 Posts

05-14-2019

US

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  • Message 15 of 23

Re: T490 Static Hiss/Noise from speakers

2019-05-28, 2:17 AM

Updating as promised. Yes the bios update fixes the latent hiss when nothing is happening, but there is still a hiss when something quite is being played through the speakers, again regardless of volume. As others have noted, you don't notice it as much if the music/video/sound is loud enough. 

 

All that said, still there, just better hidden now. Also sending back to depot to fix the screen again....

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6 Posts

06-16-2019

KR

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  • Message 16 of 23

Re: T490 Static Hiss/Noise from speakers

2019-06-16, 9:22 AM
my T470 has same problem.....I also update newest bios. but still there. what should i do?
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2 Posts

07-15-2019

DE

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  • Message 17 of 23

Re: T490 Static Hiss/Noise from speakers

2019-07-15, 12:25 PM

Received my new T490. Sadly, I also suffer from the static noise when the speakers are enabled. The device got shipped with bios version 1.08. On the support website I only can see the following message:

 

 "Please be informed that the BIOS will be available by 12th July 2019 tentatively."

 

No new version available. Anyone a clue what's going on?

 

 

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1 Posts

07-29-2019

FI

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  • Message 18 of 23

Re: T490 Static Hiss/Noise from speakers

2019-07-29, 19:36 PM

Same here on two(!) T490 machines. First one I received had static hiss / white noise and Lenovo agreed to DOA replace it to a new machine. The sad thing is that even the brand new replacement has the same problem. It seems to be hardware design flaw rather than faulty component since it's present in two brand new machines.

 

I opened up the laptop and tried to insulate speaker if it would have been electrical insulation problem. That didn't help so the problem is either inside the speaker unit or on the motherboard.

 

Has anyone got this fixed successfully? Otherwise the laptop is great but this sound problem is very disappointing.

 

 

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2 Posts

10-05-2019

IT

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  • Message 19 of 23

Re: T490 Static Hiss/Noise from speakers

2019-10-05, 18:09 PM

Can we have a BIOS update for the T470 as well? I have both a T470 and T470s. The T470s is perfect, no hiss when playing audio and after. The T470 has that annoying hiss that continues well after a sound has been played. I'm sure it can be solved with a BIOS update, I would bet the sound cards are the same!

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2 Posts

10-07-2019

HR

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  • Message 20 of 23

Re: T490 Static Hiss/Noise from speakers

2019-10-07, 12:42 PM

Hello Everyone,

I'd like to confirm statements of DJ4509, as I'm experiencing the same issues described on my new T490 bought month ago. If the default communication device, in my case Realtek Audio built in speakers, are setup up to 40% master volume, I don't hear any further noise or cracking like in good old vinyl. If I go above 40%, hiss/noise starts right away. Connecting external speaker and plugging it in 3.5mm port doesn't do any disturbance in sound, no hiss/noise at all. Connecting the same external speaker to bluetooth connection, no disturbance in sound at all.

I'll continue testing more, but at least external speakers are not making issues at all and sound can be used normally.

Device is updated to latest drivers and BIOS version. Dolby Settings are set to application-based settings, dynamically controlling Dolby modes.

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