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02-11-2014

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T440s Ultradock Speaker Buzz

2014-02-11, 23:31 PM

I have a set of 6 new T440s laptops along with Ultradocks. I ordered 2 sets of 3, with a month inbetween. I am having a problem where all of my Ultradocks produce a very loud buzzing noise from the connected speakers whenever the laptop is turned off or undocked. If the laptop is docked and powered on, everything sounds fine. 

 

I have contacted support and they are sending me a replacement dock, but since the issue is so consistent and effects all my docks, I doubt it will help. Is anyone else experiencing this, is there any fix?

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5 Posts

02-15-2014

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Betreff: T440s Ultradock Speaker Buzz

2014-02-18, 15:15 PM

Got the same problem! Any solutions so far?

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11-19-2007

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Betreff: T440s Ultradock Speaker Buzz

2014-02-18, 16:23 PM

 

Yes, a solution is being worked.  I'll check on the status.

 

I believe this may be a caused by noise on a grounding line - a potential work around is to use a 3 prong (grounded) version of the AC adapter.

 

Mark

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Betreff: T440s Ultradock Speaker Buzz

2014-02-18, 16:26 PM

Hi Mark,

 

None of my power supplies have or support a 3 prong cable. Can you contact me and advise on how I can get one?

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02-15-2014

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Betreff: T440s Ultradock Speaker Buzz

2014-02-18, 16:32 PM

I've got a grounded power connection. Buzz still appears with turned off/undocked TP wenn only having connected one USB or Display Port, no AC adapter. Sure it seems to be something simple (ground).

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18 Posts

01-25-2014

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Betreff: T440s Ultradock Speaker Buzz

2014-02-18, 20:04 PM

Same issue

 

Clearly a ground problem. Swapped speakers and cables, same issue.

 

Specifically:

 

1) Fine when laptop is turned on.

 

2) When laptop is turned off, large buzz goes thru speakers

 

Makes the dock unusable for its stated function of being able to keep all peripherals plugged in.

 

Kinda embarrasing lor Lenovo, I would think....there are no vendors here to point the finger at, all the products in question are manufactured by Lenovo.

 

Now #1 in PC sales, apparently headed to the same level of inconsistent product development as Dell.

 

Everyone in my family who is not required by work to get a computer is now gettting Apple products, and with this kind shoddy product development with no fix in sight, it's small wonder.

 

Computers are like appliances to most people, they just want them to work.

 

Sheesh.

 

 

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01-25-2014

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Betreff: T440s Ultradock Speaker Buzz

2014-02-19, 21:34 PM

I also left a review on Amazon about this dock, warning everyone about the dock. There is an excellent chance that Lenovo will ignore this problem completely, calculating that the profits made on selling the dock will outweigh any return costs, since most people will choose to live with the problem.

 

The review might save some people some aggravation.

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Betreff: T440s Ultradock Speaker Buzz

2014-02-19, 21:35 PM

Lenovo is sending me a grounded power adaptor to test. I will report my results back when I get them.

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Betreff: T440s Ultradock Speaker Buzz

2014-02-20, 22:40 PM

kireta,

 

I can assure you that this will be addressed.  There is a hardware fix in the pipeline and as soon as I have more information, I'll share it.

 

I suppose your feedback on review sites is fair - other customers will benefit from your experience.  Not all may use external speakers, and I believe this symptom occurs when the speakers and dock have power and the thinkpad is removed.  Perhaps some will just power off the speakers when they eject the ThinkPad.  

 

I appreciate your skepticism and find it sobering that it is assumed (with resulting negative narrative) that we won't address an issue.    That certainly isn't the reputation I want us to have.

 

Best regards,

 

Mark

 

 

 

 

 

 

 

 

 

 

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7 Posts

02-11-2014

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  • Message 10 of 53

Re: T440s Ultradock Speaker Buzz

2014-02-24, 18:19 PM

I received my grounded power supply this morning. Unfortunately this has no effect on the issue in my case. I have contacted Mark and am waiting for next steps. I will keep you updated on this as I get more information.

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