Acer Aspire 5715z

I've just bought Aspire 5715z and noted power sound a whine: what's
the cause?

IYO: have I to ask about its substitution in the shop?

I'm afraid..

Mhaxx

"Mhaxx" <mhaxx@despammed.com> wrote in message
newsatos31q11o5bdh40sjq5incqkts9sdo4f@4ax.com...

> I've just bought Aspire 5715z and noted power sound a whine: what's
> the cause?
>
> IYO: have I to ask about its substitution in the shop?

If it is the fan it might be a cheap fix.

>If it is the fan it might be a cheap fix.

The whine comes from AC power, not the PC..

Mhaxx

"Mhaxx" <mhaxx@despammed.com> wrote in message
news:ghlrs3t7g2c3375n57n3ieo285jug88rmf@4ax.com...
> >If it is the fan it might be a cheap fix.
>
> The whine comes from AC power, not the PC..
>
> Mhaxx

I would be very suspicious of the AC adapter. Its output is usually 19 volts
DC and should not cause any oscillation in the laptop computer. Can you have
somebody with a meter check the output of the AC adapter? You could also try
running the laptop with the battery removed. This would take the battery
load off the adapter and might change the problem. Post your results.

Bob

On Mar 4, 5:07*pm, Mhaxx <mh...@despammed.com> wrote:
> >If it is the fan it might be a cheap fix.
>
> The whine comes from AC power, not the PC..
>
> Mhaxx


Somewhere in the following very long thread is info on the hum from
power supplies- it is a known issue for this model.

http://forums.slickdeals.net/showthr...08#post8485508

"Mhaxx" <mhaxx@despammed.com> wrote in message
news:ghlrs3t7g2c3375n57n3ieo285jug88rmf@4ax.com...
> >If it is the fan it might be a cheap fix.
>
> The whine comes from AC power, not the PC..

Then it probably doesn't need to be fixed - and can't be. Magnetostriction
whine in a SMPS is a design flaw and you have to live with it.

>Somewhere in the following very long thread is info on the hum from
>power supplies- it is a known issue for this model.
>
>http://forums.slickdeals.net/showthr...08#post8485508

Sorry, where?

Mhaxx

>Then it probably doesn't need to be fixed - and can't be. Magnetostriction
>whine in a SMPS is a design flaw and you have to live with it.

If I press it (by hand) it sounds less.. have I to open it and to do
something?

Mhaxx

>I would be very suspicious of the AC adapter. Its output is usually 19 volts
>DC and should not cause any oscillation in the laptop computer. Can you have
>somebody with a meter check the output of the AC adapter? You could also try
>running the laptop with the battery removed. This would take the battery
>load off the adapter and might change the problem. Post your results.

Well, to be honest without battery it's difficult to hear weel the
whine.. what does it mean? :-O

Mhaxx

"Mhaxx" <mhaxx@despammed.com> wrote in message
news:m37us3dl2fpu74kbjm6j4d24jbd70p5u7a@4ax.com...
> >Then it probably doesn't need to be fixed - and can't be.
> >Magnetostriction
>>whine in a SMPS is a design flaw and you have to live with it.
>
> If I press it (by hand) it sounds less.. have I to open it and to do
> something?

If you get a smart, older tech, he could possibly add a little silicone
sealant or the like. But you have to know what you are doing.