R52 is making static noises

[indessen]

Hi,

my three week old R52 is making strange noises... one is coming out the fan-opening, high-pitched, intermittent. Then I heard another buzz and located it coming from the TFT... when I put my ear to it, it makes a constant "electronic/static" noise probably coming from the inverter...

This isnt normal, or is it? At least i dont recall my previous TFTs to make any noises...

[dsigma6]

slightly unrelated, but im hearing noises too. put my ear to the keyboard and hear a tick...it was every second, but not like theres an analog clock hiding in there..

[cuppingmaster]

Mine will "hiss" a little bit when I have wireless on with speakers on, running on battery only. Perhaps this is what you're referring to? Watch the "wireless internet connection" icon in the taskbar, and the hiss usually corresponds to the send/receive animation.

[spymac]

Hi everyone, I was searching on the net for this specific problem that I have encountered with 2 of my R series thinkpads, and I landed here at this site.

First off, my R51 1.6 Centrino 1830-BLU has had this problem for over a year. I first noticed it while using my laptop in a library.

The noise sounds like electronic static, a buzz. On my unit the sound can be heard best at the outlet of the CPU fan heat sink area. At first I mistook it for Hard Drive noise, but the HDD is at the opposite corner of our laptops, and the drive is noticeably quite when you put your ear up to it.

I took some sound clips of the noise, and amplified it.

http://67.181.163.101/downloads/sounds/buzz.wav
http://67.181.163.101/downloads/sounds/harddrive.wav

You can tell the difference between the HDD and this buzz, Is this the same sound you guys are hearing?

I noticed some T series guys are having a buzz with their LCD's, but I don’t know if this is the same noise.

I purchased a new R52 laptop for myself about 8 months ago and gave the old R51 to my younger sister. The new R51 1830-F4U had the same problem! It was driving me crazy trying to find out what the problem was so i did some testing to narrow down the cause of the problem

I tinkered around with the Battery Maximizer utility and created different profiles to compare. I created 2 profiles, both with all non-cpu related settings to "high" or "never" (system standby:never, LCD: high, etc.) One profile had cpu set to "very slow" the other "maximum". Well i think I narrowed it down. At the CPU slow setting the noise is barley audible. At CPU maximum setting, the noise is very audible.

It seems to be, in my case, a combination of high CPU setting on battery power.

Anyone noice a similar situation or do any testing on their machine?