Question about Fujitsu Siemens AMILO D-7830 Notebook

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Speakers don't turn back on after removing the heaphones

I unplugged my headphones, but a red light shines from the jack and I can't hear any sound when I play my music if I don't plug in the headphones. I restarted the computer but the red light is still here. Nothing happened when I shut it down and turned back on.

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The way you described convinced me that your audio driver is OK, but the sound can be heard through the headphone only. If this is the case then you have a mechanical failure (metal fatigue) on the head phone jack assembly.
I consists of two DPDT switches ganged together in a small housing with have 3mm jack on it. The leaf spring contacts failed to make after the headphone plug is detached. Only skilled technician can remove it from the PCB then sold an new one in.

Posted on Jun 03, 2009

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I have an Integra DTR 20.3. Recently, I have been getting no sound from the speakers after removing the headphones from the headphone jack. Any ideas?


Usually the headphone jack has a contact that's "made" by the 'ring' section of the jack when you push in the plug, which bypasses the speaker circuit (that's what automatically silences the speakers when you plug in the headphones when there are no switches to turn the speakers on/off manually)... if the 'ring' strip got bent somehow so it's pressing against that contact all the time, it won't let the speakers' circuit come out of bypass. Look inside the jack with a flashlight... the sideways Vs that touch the 'ring' sections of the stereo headphone plug should be about in the middle of the opening... if they're pushed over too far it may require disassembly to bend them back to the proper position.

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The headphone jack on the computer connects to the sound card, a hardware device that controls audio input and output on the PC.
The card contains a digital-to-analog converter that converts analog audio into digital signals and visa-versa.
The performance of the headphone jack, therefore, depends on how well the sound card functions; if the card doesn't work, then the headphones connected to the PC won't output sound.
Reconfiguring the audio settings will often fix problems with audio output on the headphone jack, but if the former fails to resolve the issue, replacing the sound card in its entirety is sometimes the only means of repair.
Click "Start." Enter "sound" into the search box. Select "Sound" from beneath Control Panel.
Double-click "Headphones."
If no "Headphones" option is available, double-click "Speakers."
Click "Properties" on the General tab.
Check the Device Status field for errors. Look up the message on Microsoft Support for more assistance, if applicable.
Close the window if the Device Status field reads "This Device Is Working Properly." Go to the "Levels" tab.
Click the speaker button to unmute the volume if the icon contains a red circle-backslash symbol. Drag the top slider to the right to increase the headphone volume.
Go to the "Enhancements" tab.
Check "Disable all Sound Effects." Go to Applications, and then clear "Allow Applications to Take Exclusive Control of This Device."
Click "OK" to close Headphones Properties or Speakers Properties.
Test the audio.
If the headphones fail to output sound, unplug the headphones from the computer.
Reconnect the headphones to the PC.
Headphone jacks are color-coded lime green on most PCs.
Look for the headphones symbol if the jacks are not color-coded.
Plug the headphones into the line-out port on the back of the computer if the headphone jack on the front of the PC fails to work, or visa-versa.
Test the headphones.
If headphones still won't emit sound, the sound card most likely requires replacement.
Replacing the Sound Card
Shut down the computer. Remove the power cord from the back of the PC.
Disconnect the keyboard, mouse, monitor and all other peripheral devices.
Loosen the screws found on the back of the case, then slide the cover panel off of the case. Touch the chassis to protect the hardware from electrostatic discharge, or ESD.
Set the computer on its side.
Locate the sound card found on the opposite of the audio jacks and loosen the screw that secures the card to the computer.
If no expansion card is located opposite the jacks, the computer uses an integrated sound card which can't be removed.
Remove the new audio card from its protective packaging.
Line up the card with an available expansion slot on the motherboard, then push the card down into the slot to install the new audio jacks.
Screw the card to the computer case.
Reassemble the computer.
Turn on the PC. Boot in to Windows and insert the CD that came with the new expansion card. Follow the onscreen instructions to install the sound card software to the computer.
Plug the headphones into the new line-out jack.

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1 Answer

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Hi,I know that the earphone jack usually has the switch built in, and often it takes a certain "End Shape" on the Headphone Plug to actually "Activate" it... I am wondering if this is not actually your problem? and maybe ya just gotta get the "Right One"? Sometimes I have seen the "Switch" in the Jack fail and cease to "Cut out" the speakers... which generally means replacement.

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