Boooo, hisssss

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kode-niner
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Boooo, hisssss

#1 Post by kode-niner »

Do any of your CF-30's emit a soft hiss or white noise from the speaker as soon as you turn the unit on? (before the OS loads, even)
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Shawn
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Re: Boooo, hisssss

#2 Post by Shawn »

Sounds like the inverter for the lcd is failing...
I should have several here..
what mk?
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Rob
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Re: Boooo, hisssss

#3 Post by Rob »

LCD inverter for sure! I've seen it! :) No big deal!

But we do need your full model number!!! :)
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kode-niner
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Re: Boooo, hisssss

#4 Post by kode-niner »

It's a mark 3 KQPRQAM.
The noise is barely noticeable, though.
Daily drives a CF-31

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Rob
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Re: Boooo, hisssss

#5 Post by Rob »

Does it stop making noise when you close the lid?

Thanks!
~Rob - Vice President - Rugged Depot~
~Cell: (630)/300-8877~
~Owner - Toughbooktalk~
~Fully rugged Toughbook user since April 18th 2005~
~FZ-40ACAAHKM - Primary Toughbook / Workstation as of 7/29/22
~Win10 Pro (Win11 DG), Intel Core i5-1145G7 (up to 4.4GHz), vPro, 14.0" FHD Gloved Multi Touch, 16GB, 1TB Samsung SSD, Intel Wi-Fi 6, Bluetooth, 4G EM7690, GPS, Quad Pass (BIOS Selectable), Mic and Infrared 5MP Webcam, Standard Battery, TPM 2.0, Emissive Backlit Keyboard, Dual Batteries, USB A + HDMI + Serial X-PAK, Shoulder Strap, Flat~
~AT&T Business 1GB Fiber 1GB/1GB business static line~
~Gamber & Johnson Platinum Partner~

http://www.toughbooktalk.com
http://downloads.toughbooktalk.com/
http://www.rugged575.com - 300' UHF GMRS Radio Repeater
http://www.crete600.com - 310' UHF Linked GMRS Radio Repeater


~Emergency preparedness starts with reliable communication systems above all. Pretend the internet and cell phones didn’t exist, how will you communicate? If you’re interested in learning more, ask me!~

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kode-niner
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Re: Boooo, hisssss

#6 Post by kode-niner »

I see where you're going with this. No, when my LCD powers down or when I close the lid, the noise continues.
Daily drives a CF-31

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Shawn
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Re: Boooo, hisssss

#7 Post by Shawn »

My Toughbooks don't boo or hiss..They do whisper in my ear that they are lonely. They keep insisting that I get them more friends.

AC or battery power or both?
Try removing the battery
Try unplugging the speaker.
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kode-niner
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Re: Boooo, hisssss

#8 Post by kode-niner »

Hehe, maybe the solution is to get more toughbooks then.

Regardless of power or presence of batteries, it hisses. It's too minor of a problem for me to go through the trouble of disconnecting the speaker, though. You really have to put your ear to it, or only hear it when it's dead silent in the room. So far it doesn't bother me but I do wonder about the power drain.

About the lid closing, it's fair to note that I configured it to not sleep but just blank the screen.
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Shawn
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Re: Boooo, hisssss

#9 Post by Shawn »

Try plugging in a earphone...
SSD ? HDD spin?
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kode-niner
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Re: Boooo, hisssss

#10 Post by kode-niner »

Hey guys, been away for a while. Following up on this issue, plugging in headphones does not stop the sound coming from the speaker. Anyway, it's a minor issue.
Daily drives a CF-31

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