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Solved weird sound.... coming from speakers


noelian13

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55
#1
Recently i had this repair on my netbook screen which was needed to be opened... then after that when it returned and opened the system (i was still using windows 7 back then) all music played...it will play, but all i can hear is that sound that you can hear from a plane engine when taking off somewhat near that sound...or when you place a microphone and a speaker near each other..a feedback i guess its called like that...so i tried to disable my build in mic which didn't solve the problem still the same...configured in my netbook software driver(realtek hd audio) and adjusted things...sometimes i can hear the music....but the feedback still is the loudest that i can hear...i tried to put my earphones to the netbook socket but still i can hear that.....

so i tried in installing win 8 (clean installation i mean all files folders etc were deleted) hoping for the problem to be solved.....but its still the same
i asked the repairman who opened my netbook to check it ...and told me its not the speakers..... its just a software problem...which i cant believe since if its software then when i installed win 8 , it should be gone...

just asking if anyone have an idea whats the problem :D thanks :)
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
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    8GB
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HippsieGypsie

It's Gururrrrrr8!
Lilymoor, IL

Posts
13,547
#2
I'd say it's an electronic component died or something shorting out on the MOBO or sound card. Did you leave it in the sun or overheat somehow? Drop it? Not to imply you're not careful.

i asked the repairman who opened my netbook to check it ...and told me its not the speakers..... its just a software problem...which i cant believe since if its software then when i installed win 8 , it should be gone...
You experimented to try to fix the problem software-wise. I'd say you're gut feeling is correct. Sounds to me like he's passing the buck as we say. If it's under warrantee, get them to fix it.

Good luck!
 

My Computer

System One

  • OS
    8.1 Pro X64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Acer T690
    CPU
    Intel Pentium D Dual Core
    Motherboard
    Acer/Intel E946GZ
    Memory
    2GB (max upgrade)
    Graphics Card(s)
    Intel Graphics Media Accelerator 3000 - PCI Express x16
    Sound Card
    Integrated RealTek ALC888 high-definition audio with 7.1 channel audio support
    Monitor(s) Displays
    Acer AL1917W A LCD
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    1440 X 900
    Hard Drives
    350 GB Seagate Barracuda 7200.10
    Thumb drives
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    Standard 250 watt
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noelian13

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Posts
55
#3
I'd say it's an electronic component died or something shorting out on the MOBO or sound card. Did you leave it in the sun or overheat somehow? Drop it? Not to imply you're not careful.

i asked the repairman who opened my netbook to check it ...and told me its not the speakers..... its just a software problem...which i cant believe since if its software then when i installed win 8 , it should be gone...



You experimented to try to fix the problem software-wise. I'd say you're gut feeling is correct. Sounds to me like he's passing the buck as we say. If it's under warrantee, get them to fix it.

Good luck!
well... i didn't drop it/left it in the sun...when i use my netbook i always use my cooling pad :D
as far as i can remember i've never dropped it :D
the netbook was out of warranty/expired warranty when i let them fix it, how can i know if something went wrong inside ? MOBO is ? the magnets inside the speaker isn't it ? :D
how to know if sound card got damaged? thanks ^_^
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
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    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
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HippsieGypsie

It's Gururrrrrr8!
Lilymoor, IL

Posts
13,547
#4
Well, good thing you've got another one. I'd be pulling my hair out without my PC!

The MOBO is the motherboard - main circuit board that receives all peripherals.

You had a screen fix on the first repair? Laps are known for what they call hinge problems (from opening and closing like flip phones). Wire insulation wear out at the hinge or a wire breaks. Speakers on in the screen too. And screen failures from which I can't remember for I never owned a Lap (2 separate problems). I read it somewhere. It could be sound card as you suggested.

Did you contact them again and tell them what you did to resolve the problem? We pretty much know it isn't a software problem for installing 8 would've fixed it. I'd suggest being adamant with them for they need to guarantee their work so far as hardware. He could have been soldering and dropped hot solder on the MOBO or something else, therefore short-circuit something. I'm sure they booted it to see if the screen is working, but didn't realize the speakers are not. If you don't get satisfaction from them, I'm afraid you'll have to take it elsewhere. I've also been known to tell businesses, when worse came to shoves, that my father is a lawyer and that they'll be hearing from him. I'm not recommending you do that, though.

Let's not jump to conclusions. Let's wait here. In the mean time I'll write forum friends to take a lQQk at this thread to see if they can help.
 
Last edited:

My Computer

System One

  • OS
    8.1 Pro X64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Acer T690
    CPU
    Intel Pentium D Dual Core
    Motherboard
    Acer/Intel E946GZ
    Memory
    2GB (max upgrade)
    Graphics Card(s)
    Intel Graphics Media Accelerator 3000 - PCI Express x16
    Sound Card
    Integrated RealTek ALC888 high-definition audio with 7.1 channel audio support
    Monitor(s) Displays
    Acer AL1917W A LCD
    Screen Resolution
    1440 X 900
    Hard Drives
    350 GB Seagate Barracuda 7200.10
    Thumb drives
    PSU
    Standard 250 watt
    Case
    Desktop 7.2" (183mm) W x 17.5" (445mm) L x 14.5"
    Cooling
    Dual case fans + CPU fan
    Keyboard
    Acer Windows PS/2
    Mouse
    Wireless Microsoft Arc
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    54mbp/s
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    IE11
    Antivirus
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    Office Pro 2013 / Nokia Lumia 1520 Windows Phone 8.1DP GDR1
#5
noelian13,

Good day.

You should open it first before you take it at home to have proof against him.
And you do not have any idea on how he fixed your laptop.
I assume it is not a software but a hard drive inside has a problem.
 

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noelian13

Member
Member
Posts
55
#6
Well, good thing you've got another one. I'd be pulling my hair out without my PC!

The MOBO is the motherboard - main circuit board that receives all peripherals.

You had a screen fix on the first repair? Laps are known for what they call hinge problems (from opening and closing like flip phones). Wire insulation wear out at the hinge or a wire breaks. Speakers on in the screen too. And screen failures from which I can't remember for I never owned a Lap (2 separate problems). I read it somewhere. It could be sound card as you suggested.

Did you contact them again and tell them what you did to resolve the problem? We pretty much know it isn't a software problem for installing 8 would've fixed it. I'd suggest being adamant with them for they need to guarantee their work so far as hardware. He could have been soldering and dropped hot solder on the MOBO or something else, therefore short-circuit something. I'm sure they booted it to see if the screen is working, but didn't realize the speakers are not. If you don't get satisfaction from them, I'm afraid you'll have to take it elsewhere. I've also been known to tell businesses, when worse came to shoves, that my father is a lawyer and that they'll be hearing from him. I'm not recommending you do that, though.

Let's not jump to conclusions. Let's wait here. In the mean time I'll write forum friends to take a lQQk at this thread to see if they can help.
yep 1st repair, screen problem my screen goes to pink when its in white background,

when i noticed the problem the next day i asked them to check it again....but they just told me...its just a software problem, driver problem etc...i insisted but they won't believe me so me and my mom just left.... ( i was with my mom she holds my money xD)

they just opened the front panel of the screen though.... not the main body part where the mother board is placed....

thank you :)
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
    Graphics Card(s)
    Sapphire, AMD Radeon HD 6570
    Screen Resolution
    1360x760
    Internet Speed
    40mbps

noelian13

Member
Member
Posts
55
#7
noelian13,

Good day.

You should open it first before you take it at home to have proof against him.
And you do not have any idea on how he fixed your laptop.
I assume it is not a software but a hard drive inside has a problem.
he fixed my lappy by opening the front panel of the screen nothing else....
yes as far as i can guess its not software ....must be hardware
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
    Graphics Card(s)
    Sapphire, AMD Radeon HD 6570
    Screen Resolution
    1360x760
    Internet Speed
    40mbps

HippsieGypsie

It's Gururrrrrr8!
Lilymoor, IL

Posts
13,547
#8
yep 1st repair, screen problem my screen goes to pink when its in white background,

when i noticed the problem the next day i asked them to check it again....but they just told me...its just a software problem, driver problem etc...i insisted but they won't believe me so me and my mom just left.... ( i was with my mom she holds my money xD)

they just opened the front panel of the screen though.... not the main body part where the mother board is placed....

thank you :)
You must have a great mom. Pink? What a lovely color! :shock: They fixed the screen by removing via the lid where the screen and speakers reside? Correct I assume? Speakers reside in the lid, not the body?

We're getting somewhere, though. Like I stated earlier, I'm not familiar with Laps. No idea how they would mess up the speakers that way, but I assume they did.

I wrote a couple of my friends. One wrote back stating he wouldn't know either. The other hasn't responded yet.

I'd advise you to take it back and ask them kindly again for help. People usually don't deny other people that need help. Tell them you loaded another OS (as you did) and that you don't understand why it doesn't work. I'm sure they'll help.

Please post back as to what happens, if that's what you decide.
 

My Computer

System One

  • OS
    8.1 Pro X64
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Acer T690
    CPU
    Intel Pentium D Dual Core
    Motherboard
    Acer/Intel E946GZ
    Memory
    2GB (max upgrade)
    Graphics Card(s)
    Intel Graphics Media Accelerator 3000 - PCI Express x16
    Sound Card
    Integrated RealTek ALC888 high-definition audio with 7.1 channel audio support
    Monitor(s) Displays
    Acer AL1917W A LCD
    Screen Resolution
    1440 X 900
    Hard Drives
    350 GB Seagate Barracuda 7200.10
    Thumb drives
    PSU
    Standard 250 watt
    Case
    Desktop 7.2" (183mm) W x 17.5" (445mm) L x 14.5"
    Cooling
    Dual case fans + CPU fan
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    Acer Windows PS/2
    Mouse
    Wireless Microsoft Arc
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    54mbp/s
    Browser
    IE11
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    Defender
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    Office Pro 2013 / Nokia Lumia 1520 Windows Phone 8.1DP GDR1

vrosa

Tech Addict
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#9
Considering that you installed 8 and the problem persisted it must be a harware problem. Do the following to find the static noise source:

1- Disable the modem in device manager - check if the noise still persists

2- Disable the webcam microphone in device manager - check if the noise still persists

3- Mute Line-in - check if the noise still persists

If the steps above dont make difference probably it's a speaker defect

I hope it helps :)
 
Last edited:

My Computer

System One

  • OS
    Windows 10.0.10122
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    My Build - Vorttex Ultimate
    CPU
    Core i7 @ 4500 MHz
    Motherboard
    ASUS Z87-Plus
    Memory
    32GB DDR3 @ 1822 MHz (OC)
    Graphics Card(s)
    Radeon R9 280X 3GB @ 1180 / 6800 MHz
    Sound Card
    7.1 HDA
    Monitor(s) Displays
    LCD LG 22" + CRT LG 17"
    Screen Resolution
    1760 x 1320 / 1280 x 960
    Hard Drives
    1 x 240 GB SSD (System)
    3 x 500 GB HDD (Data/Media)
    1 x 2000 GB e-HDD (Backup)
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    ThermalTake 1000W PSU
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    Microsoft Wireless Mouse
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    Some wired stuff

noelian13

Member
Member
Posts
55
#10
yep 1st repair, screen problem my screen goes to pink when its in white background,

when i noticed the problem the next day i asked them to check it again....but they just told me...its just a software problem, driver problem etc...i insisted but they won't believe me so me and my mom just left.... ( i was with my mom she holds my money xD)

they just opened the front panel of the screen though.... not the main body part where the mother board is placed....

thank you :)
You must have a great mom. Pink? What a lovely color! :shock: They fixed the screen by removing via the lid where the screen and speakers reside? Correct I assume? Speakers reside in the lid, not the body?

We're getting somewhere, though. Like I stated earlier, I'm not familiar with Laps. No idea how they would mess up the speakers that way, but I assume they did.

I wrote a couple of my friends. One wrote back stating he wouldn't know either. The other hasn't responded yet.

I'd advise you to take it back and ask them kindly again for help. People usually don't deny other people that need help. Tell them you loaded another OS (as you did) and that you don't understand why it doesn't work. I'm sure they'll help.

Please post back as to what happens, if that's what you decide.
well my mom wont trust me with money so she holds my money... -.- the screen is pink .... yes they removed the lid. no the speakers reside at the body ... will find a time to go back to them cuz im a bit busy with my lessons :)
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
    Graphics Card(s)
    Sapphire, AMD Radeon HD 6570
    Screen Resolution
    1360x760
    Internet Speed
    40mbps

noelian13

Member
Member
Posts
55
#11
Considering that you installed 8 and the problem persisted it must be a harware problem. Do the following to find the static noise source:

1- Disable the moden in device manager - check if the noise still persists

2- Disable the webcam microphone in device manager - check if the noise still persists

3- Mute Line-in - check if the noise still persists

If the steps above dont make difference probably it's a speaker defect

I hope it helps :)
whats moden? sorry im not familiar with hardware terms...

i did the disable mic and webcam in dev manager still the same (note..if i play sound etc )

how do i mute the line in? i did the click the speaker icon in win 7 taskbar and clicked mute
very silent .....
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
    Graphics Card(s)
    Sapphire, AMD Radeon HD 6570
    Screen Resolution
    1360x760
    Internet Speed
    40mbps

vrosa

Tech Addict
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#12
Although Most laptops don't have a line-in jack, if your laptop has its level control will appear in Speakers Properties. Click in the speaker icon in taskbar then in the bigger icon above volume control and go to levels tab. Line-in level control must be bellow Mic level control.

About what's modem: Modem - Wikipedia, the free encyclopedia
 

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My Computer

System One

  • OS
    Windows 10.0.10122
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    PC/Desktop
    System Manufacturer/Model Number
    My Build - Vorttex Ultimate
    CPU
    Core i7 @ 4500 MHz
    Motherboard
    ASUS Z87-Plus
    Memory
    32GB DDR3 @ 1822 MHz (OC)
    Graphics Card(s)
    Radeon R9 280X 3GB @ 1180 / 6800 MHz
    Sound Card
    7.1 HDA
    Monitor(s) Displays
    LCD LG 22" + CRT LG 17"
    Screen Resolution
    1760 x 1320 / 1280 x 960
    Hard Drives
    1 x 240 GB SSD (System)
    3 x 500 GB HDD (Data/Media)
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    PSU
    ThermalTake 1000W PSU
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    Some wired stuff

Hopachi

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#13
Pink screen, been there... it's definitely hardware problems. I had to reheat my graphics card and reapply thermal grease... got an older laptop back in business.

But anyway, in your case, since only the screen was opened, I think were dealing with a cable (screen? sound?) that lost connection (even partially is bad enough) but that's just my opinion on the current situation. I'm talking about those thin cables that pass under the plastic cover just besides or under screen.

Does the noise persist in the BIOS also? Then it's hardware (hopefully cables... and it's not as bad as a fried MOBO or sound card)
You should let them check the cable connectors (if they are properly plugged in) or to see if a cable is broke or cut by mistake (you never know what to expect with those thin fragile cables out there).

Good luck
 

My Computer

System One

  • OS
    Windows 10 x64
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    Laptop
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    HP Envy DV6 7250
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    Intel i7-3630QM
    Motherboard
    HP, Intel HM77 Express Chipset
    Memory
    16GB
    Graphics Card(s)
    Intel HD4000 + Nvidia Geforce 630M
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    IDT HD Audio
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    15.6' built-in + Samsung S22D300 + 17.3' LG Phillips
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noelian13

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Member
Posts
55
#14
thanks for the screen shot... done that...still same

and for Hopachi... since i removed the speakers in device manager....when netbook starts in BIOS post it'll sound like a screeching sound
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
    Graphics Card(s)
    Sapphire, AMD Radeon HD 6570
    Screen Resolution
    1360x760
    Internet Speed
    40mbps

Hopachi

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#15
thanks for the screen shot... done that...still same

and for Hopachi... since i removed the speakers in device manager....when netbook starts in BIOS post it'll sound like a screeching sound
Device Manager is within Windows and has (normally) nothing to do with the BIOS, there is sound in the BIOS (bad sound) and that means speakers (or something) are still on. You (or the repairman) still need to check the cables as I posted earlier, just to make sure that the connections are ok. Netbooks are fragile (have very small electronical components) and those tiny cables are easy to accidentally brake or disconnect so be careful.
 

My Computer

System One

  • OS
    Windows 10 x64
    Computer type
    Laptop
    System Manufacturer/Model Number
    HP Envy DV6 7250
    CPU
    Intel i7-3630QM
    Motherboard
    HP, Intel HM77 Express Chipset
    Memory
    16GB
    Graphics Card(s)
    Intel HD4000 + Nvidia Geforce 630M
    Sound Card
    IDT HD Audio
    Monitor(s) Displays
    15.6' built-in + Samsung S22D300 + 17.3' LG Phillips
    Screen Resolution
    multiple resolutions
    Hard Drives
    Samsung SSD 250GB + Hitachi HDD 750GB
    PSU
    120W adapter
    Case
    small
    Cooling
    laptop cooling pad
    Keyboard
    Backlit built-in + big one in USB
    Mouse
    SteelSeries Sensei
    Internet Speed
    slow and steady
    Browser
    Chromium, Pale Moon, Firefox Developer Edition
    Antivirus
    Windows Defender
    Other Info
    That's basically it.

noelian13

Member
Member
Posts
55
#16
in my netbook bios there's no sound config or setting :D
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
    Graphics Card(s)
    Sapphire, AMD Radeon HD 6570
    Screen Resolution
    1360x760
    Internet Speed
    40mbps

fafhrd

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#17
Following the repair of the screen luminaire, I would guess that the microphone cable has been routed wrongly and is running too close to the inverter circuit (this produces a high voltage (about 600v), high frequency signal which energizes the cold cathode illumination for the screen). If the signal is leaking into the audio circuit it will produce high pitch noise.

The resolution would be to disassemble the screen again, and to neatly route the cables so that they do not foul the inverter circuit board, if necessary taping the cable to the casing, and ensuring that all cables are properly plugged in or terminated at either end. If damaged, any cable should be replaced, preferably with the identical Manufacturer's SKU.
 

My Computer

System One

  • OS
    Windows 8.1 Pro with Media Center
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    HP COMPAQ Presario CQ57
    CPU
    AMD E- 300 APU with Radion HD Graphics 1.30GHz
    Motherboard
    inbuilt
    Memory
    4GB
    Graphics Card(s)
    ATI
    Sound Card
    High Definition Audio on-board
    Monitor(s) Displays
    notebook
    Screen Resolution
    1366x768
    Hard Drives
    Seagate ST9500325AS
    Google drive 15GB
    Skydrive 25GB
    BT Cloud
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    external 20v
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    Laptop
    Cooling
    pretty good
    Keyboard
    inbuilt
    Mouse
    touchpad
    Internet Speed
    BT Infinity Unlimited - 80 up 20 down =70/16 really
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    Chrome Canary usually
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    Windows Defender and Malwarebytes
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    no Start menu modifications
    Upgraded with no issues to 8.0 and to 8.1

Hopachi

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#18
Following the repair of the screen luminaire, I would guess that the microphone cable has been routed wrongly and is running too close to the inverter circuit (this produces a high voltage (about 600v), high frequency signal which energizes the cold cathode illumination for the screen). If the signal is leaking into the audio circuit it will produce high pitch noise.

The resolution would be to disassemble the screen again, and to neatly route the cables so that they do not foul the inverter circuit board, if necessary taping the cable to the casing, and ensuring that all cables are properly plugged in or terminated at either end. If damaged, any cable should be replaced, preferably with the identical Manufacturer's SKU.
A very good explanation. I Agree.
Check the cables and see if that's the problem.
 

My Computer

System One

  • OS
    Windows 10 x64
    Computer type
    Laptop
    System Manufacturer/Model Number
    HP Envy DV6 7250
    CPU
    Intel i7-3630QM
    Motherboard
    HP, Intel HM77 Express Chipset
    Memory
    16GB
    Graphics Card(s)
    Intel HD4000 + Nvidia Geforce 630M
    Sound Card
    IDT HD Audio
    Monitor(s) Displays
    15.6' built-in + Samsung S22D300 + 17.3' LG Phillips
    Screen Resolution
    multiple resolutions
    Hard Drives
    Samsung SSD 250GB + Hitachi HDD 750GB
    PSU
    120W adapter
    Case
    small
    Cooling
    laptop cooling pad
    Keyboard
    Backlit built-in + big one in USB
    Mouse
    SteelSeries Sensei
    Internet Speed
    slow and steady
    Browser
    Chromium, Pale Moon, Firefox Developer Edition
    Antivirus
    Windows Defender
    Other Info
    That's basically it.

Kevin Ismail

Revived
VIP Member
Power User
Solo.

Posts
2,161
#19
Noel
Just additional thought here.
I think I agree your problem might be caused by an oscillating circuit in which some sensitive area in your motherboard's sound circuit isn't properly shielded or grounded, and something is caught in your netbook casing. It could just caused by (possibly) the repairman forgot to put back the shield or or drop something into it (who knows).

If you decide to open the screen cover yourself to check the cable assembly, you'd better do it cautiously as the screen mostly using delicate transparent ribbon cables routed trough the hinge with double adhesive tape.

I feel like you should insist in having the repairman reopen and reassemble it. ;)

Kevin
 

My Computer

System One

  • OS
    Windows 10 Pro 64-bit
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Home Built system
    CPU
    Core i5
    Motherboard
    Intel DH55PJ
    Memory
    4 GB
    Graphics Card(s)
    ATI 4650
    Sound Card
    Realtek HD Integrated
    Monitor(s) Displays
    LG Flatron L1742S; LG Flatron 19"; Samsung TV 48"
    Screen Resolution
    1280:1024; 1366:768;1920:1080
    Hard Drives
    SSD 256 GB
    Seagate Barracuda 500 GB
    WDC 1 TB
    PSU
    Power
    Case
    Simbadda
    Cooling
    Conventional
    Keyboard
    Logitech Wireless
    Mouse
    Logitech Wireless
    Internet Speed
    1.4 MBPS
    Other Info
    External HDD WDC 2 TB
    Dial Up Modem Huawei
    Home-made Home Theater

noelian13

Member
Member
Posts
55
#20
Following the repair of the screen luminaire, I would guess that the microphone cable has been routed wrongly and is running too close to the inverter circuit (this produces a high voltage (about 600v), high frequency signal which energizes the cold cathode illumination for the screen). If the signal is leaking into the audio circuit it will produce high pitch noise.

The resolution would be to disassemble the screen again, and to neatly route the cables so that they do not foul the inverter circuit board, if necessary taping the cable to the casing, and ensuring that all cables are properly plugged in or terminated at either end. If damaged, any cable should be replaced, preferably with the identical Manufacturer's SKU.
sorry i dont know how to open the screen in myh netbook, but maybe you might know Aspire one D255 is the model :D like a tutorial to open it may help :) if its okay as some tutorials use complicated methods .... or just words at all :(
 

My Computer

System One

  • OS
    Windows 8.1 Build 9600
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Toshiba,Acer(2 notebooks)Asus G1S
    CPU
    Intel i5 2400 @3.1 ghz/i3 4th gen
    Motherboard
    GA-Z77M-D3H
    Memory
    8GB
    Graphics Card(s)
    Sapphire, AMD Radeon HD 6570
    Screen Resolution
    1360x760
    Internet Speed
    40mbps