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if your computer came with a motherboard disc the sound drivers could be on it you might have to uninstall then reinstall both the sound drivers and the sound card make sure you have both of these devices backed up to a disc before uninstalling a yellow? question mark means you need to install/update driver to do this right click to install driver also click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers click start control panel sounds and audio,volume,advanced,speakers select appropriate speakers also audio you will find 3 drop down lists make sure you have made the correct adjustmentsthere click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can make adjustments there you can also tick in the box place icon in taskbar hope this helps
If you have a webcam with a built in mic you need to make it your 'default' (The one you want to use)
Set up Audio
Laptop x webcam/mic x Vista x Yahoo Messenger
TEST SPEAKERS Right click on speaker icon in System Tray Select "Playback Devices" The speaker icon ( checked as working) and volume level graph should be visible Right click on the volume graph and click "Test" Left hand speakers followed by right hand should be heard
SET DEFAULT & TEST MIC Click "Recording" tab. Set required mic as default - click on mic font to highlight and click "Properties" In lower dropbox display "Use this device enable" click OK Click "Levels" tab and ramp up sliders ( adjust to suit later) Return to "Recording". Test mic by speaking and make sure volume graph displays
CONFIGURE TO MESSENGER
Open messenger - on top toolbar. Left click ( > ) Messenger > Preferences > Connection - Select 'no proxies' or 'connect direct to the internet' depending on the version of messenger you have make sure your internet connection and country are correct in the lower two boxes > Apply > OK
Click ( > ) Messenger > Preferences > Calling and Audio Set mic and speakers to show Default equipment Run call up assistant to test audio equipment > Apply > OK
Speaker (right speaker) wire to GREEN socket. Open your device manager and see if any sound component is registering a splat...yellow ! Is the light on the speaker. Open sound and see that no X is in the mute box. Make sure the volume in turned up on the speaker and the computer. If all that is cool...reinstall the sound drivers for your computer. I don't mean to belittle you but its the little things that are missed can mess you up for hours-and man does it give one a red face. good luck , hope something here helps please leave rating.
The fault may be the bass driver itself or the Low Frequency power amp built into the speaker box. hard to determine which it is because it is intermittent. There are a couple of things to try. when the fault occurs.
just lightly touch the cone on the bass driver see what happens. If it fires up again, it has failed soldering on the spider wire connections from the terminals to the cone. This can be repaired by a decent sound guy the does speakers, or a specialist near you that can be found easily enough. A new replacement driver is also an immediate option if you don't mind spending the bucks.
if the above didn't work, to prove to yourself where the problem may lay, you could swap the bass drivers from one box to the other and see if the fault follows the driver, or remains with the speaker box. If the electronics are faulty, unless you have some decent experience with soldering and fault finding, you may be best to get it to a repair guy,
If you cant get it sorted, please provide me with your location(not address:)) and I will be able to locate a decent guy that knows what he is doing for you. Cheers
Let's try the easy ones first: 1. try to do a reset of the unit; 2. check that all the speaker wirings are: 2.1 connected properly following the wiring diagram; 2.2 not bare/exposed and touching any metal part/chassis; 3. verify that the MUTE is not enabled; 4. try all signal sources: AM/FM, CD, SD Card, USB, AUX; 5. verify that the SEL is set to SUB OFF; 6. replace the CR-2025 Lithium battery of the remote.
If your concern has not been corrected after completion of the above procedures, you may need to: a. open the unit for a loose connection and/or other diagnosis; b. ask assistance from the manufacturer's Technical Service at 1-800-445-1797; c. return the unit for a replacement.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.