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martin959
Paper Tape
Posts: 3
Registered: ‎07-13-2017
Location: DE
Views: 169
Message 1 of 5

Lenovo Z70 has high frequency tone in battery operation

If I use my notebook with the power adapter I have no problems.

 

In battery operation it starts to make a high frequency tone, thats pulsing every second.

I already send it to Lenovo to repair, but I got it back as it was before: "its in lenovo specification"

This noise makes my crazy. It's like a tinnitus. I never had that problem with any other notebook.

 

I also tested it with different kind of people: Children and youg poeple hear it, older people dont hear ist.

So maybe lenovo empleyee is too old or they don't want to repair? 

What can I do, because this is not ok.

 

Note: I mean not the voice of the power adapter. But If you compare with that:

The voice, its louder, pulsative and higher. It comes out inside of the notebook. So it kills me...

Sr Support Specialist
Posts: 8,550
Registered: ‎11-30-2015
Location: PH
Views: 133
Message 2 of 5

Re: Lenovo Z70 has high frequency tone in battery operation

Hi martin959

 

Welcome to the Community Forums.

 

You can try setting the power option on battery mode in high performance to see if that would help with the high pitch noise while on battery alone.

 

Regards



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martin959
Paper Tape
Posts: 3
Registered: ‎07-13-2017
Location: DE
Views: 93
Message 3 of 5

Re: Lenovo Z70 has high frequency tone in battery operation

OK. But this is not normal, is it? Is it justified to send it to Lenovo? I think so.

martin959
Paper Tape
Posts: 3
Registered: ‎07-13-2017
Location: DE
Views: 92
Message 4 of 5

Re: Lenovo Z70 has high frequency tone in battery operation

Power mode option doesn't change anything.

Sr Support Specialist
Posts: 8,550
Registered: ‎11-30-2015
Location: PH
Views: 88
Message 5 of 5

Re: Lenovo Z70 has high frequency tone in battery operation

Hi martin959

 

Greetings.

 

As there is coil noise expected within normal limits among electric devices, if such noise is something that is enough to interfere users from normal usage (like speaker interference) then technical support should be notified.

 

Tinnitus like description should be enough to say that battery needs to be checked especially if power options to high performance would give the same coiling effect that it exceeds tolerable hearing acuity.

 

Regards



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