Dell Mini 9 Hardware Issues / Problems Inform everyone on any issues or problems with your Dell Mini 9 hardware.
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Join Date: Mar 2009
Re: Dell mini 9 - little noise - 03-31-2009, 05:36 PM
I tried to mute speakers and deactivated wlan/bluetooth card (as suggested by other threads in this forum). It didn't help.
The noise doesn't come from the audio system. Probably something related to the south bridge (http://tinyurl.com/dho4s8)? An interference? Tomorrow, I will call a tech assistant.
Join Date: Feb 2009
Location: Tucson Arizona
Re: Dell mini 9 - little noise - 03-31-2009, 07:02 PM
When my Mini is plugged into the "Mini" inverter used in my car I get some noise out of the speaker. The headset connector becomes absolutely unusable during this time.
This leads me to believe you may have some ugly power coming into your Mini. You may have a bad (noisy) wall wart.
Another Item I have seen cause this type of issue is being in close proximity to some RF source. The RF will bleed into the computer and ends up indicating itself through the speakers
Food for thought
Runcore 64GB | 2GB RAM | ATP 16GB C6 SDHC | 1.3 Webcam | Bluetooth | OSX 10.5.6 | Fusion w/Windows XP | CrossOver | DellEFI 1.2A5 | BIOS A04 | 77Whr Battery
Will install OSX for Food
Join Date: Mar 2009
Re: Dell mini 9 - little noise - 04-01-2009, 08:11 PM
It's almost certainly the backlight inverter and quite normal. Try turning the brightness up and it should go away.
See here: http://www.silentpcreview.com/stop_lcd_whine
I suspect your screen dims itself when you unplug the power.
It was the silence thing that attracted me to the mini, forgot about this one, ho hum..
Join Date: Apr 2009
Re: Dell mini 9 - little noise - 04-20-2009, 08:06 PM
Hey all. Got me mini 9 about a week ago and loving it so far!
I agree that the "buzz" comes from the dimming circuit of the LCD backlight. This is a common problem and doesn't mean the mini is defective, it just may not be masked that well on Dell's part.
Here's an example of a backlight that advertises no audible PWM noise (3rd from bottom in features list).
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