I tried to use external speakers and headphones to listen to music aloud but the jack doesnt seem to work well. The output sound using the SPDIF jack is not as good as it should be. It's like you're listening a sound from a traditional transistor radio. I mean the sound doesnt have any bass at all, but when I listen to the music using the built in speaker of the laptop, the sound works great. I hope somebody can help me with this.
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these are fairly passive in that if a headphone or earpiece is plugged in, they switch the output from the internal speaker to the external speaker. So, it's usually one of a few problems.
The jack is mucked up, and needs replaced.
The headphone plug wires have a broken connection
The headphone needs power to amplify, and that's not working.
If trying another headphone or earpiece you know is working doesn't work, it's the jack itself. They can only handle so many uses before they either fail closed, or open or completely. Depending on which one, either:
neither speakers nor headphones work.
only speakers work
only headphones work
Replacement necessitates opening the case and replacing the jack. For that, there's no help.
Check to make sure the problem is not with the headphone jack or the external speaker jack as these are in the circuit between the power amp chip and the built in speaker.
You can also trace through the circuit with a music source on the amp input and with simple headphones check the signal path through the circuit until the music disappears. To do this, take a headphone and set it up with 2 test leads on the ends- attach one to ground.
Now your TL072 op amps have 2 outputs, pin1 and pin 7. The inputs for pin 1 are pins 2 and 3, and the inputs for the amp section outputing on pin 7 are pin 5 and pin 6. If you get sound at pin 1 or pin 7, you move forward to the next TL072. Check for output. Then move to the power amp chip on the heat sink. Pin 1 should be the output and will be wired to the headphone jack first. The external speaker jack second and the built in speaker third. The input for that power amplifier chip is pin 7 or pin 8 depending how it is wired.
If the amp chip is blown, make sure to put an adequate amount of thermal grease on the back side of the IC in contact with the heat sink so it can operate as cool as possible.
How can you say that it is the internal speaker that is defective? Have you tried another sound output, like headset or external speakers? If you have, and it works then the problem is definitely the speakers. You will need to have it serviced/replaced. If even the external speakers do not dork, then the problem is the sound card which is embedded on the motherboard. That means you will need to have the motherboard replaced.
But before anything else, try to check the sound playback if it is properly set to default. Sometimes we may have installed an application or clicked on something that changes the default output of our speakers. Check it first and hopefully it fixes it. Make sure that you have the right default sound output.
It is NOT likely the keyboard is "killing the speakers"... OR the headphones for that matter.
I suspect the problem is bad switch contacts in the headphone jack that cut off the speaker line outputs when headphones are plugged into the pro keys. These jacks are, to put it bluntly, JUNK... they are EASILY damaged by pulling the cable plugged into them sideways. You will need to service the unit.
If you have a headphone jack, try listening with the phones to see if there is sound. Many of the synths have a way to defeat the line outputs and/or onboard speakers. Sometimes the headphone jack disables the speakers...
Not knowing your configuration regarding external amp/speaker makes it difficult to give further help.
Sometimes there is a mute button and of course the volume control.
Do look at the volume control and see if it MIGHT have been damaged as it likely passes the audio directly. The results of the test with headphones though is important!
Try here:http://www.computing.net/answers/windows- xp/headphones-amp-speakers-switching/55486.html Also:http://www.vistaheads.com/forums/microsoft-public-windows-vista-music-pictures-video/133605-sound-doesnt-switch-automatically-headphones-when-plugged.html Also:http://www.vistax64.com/sound-audio/198039-sound-doesnt-switch-speakers-headphones.html scroll down the page for the discussion.
EXTERNAL SPEAKERS: If your are plugging speakers into your headphone jack and they dont play, but you plug headphones into the same port and they work fine.. then it is the external speakers.
INTERNAL SPEAKERS: But if you are using the speakers in the laptop, then your speakers are probably bad. Try some software settings, but probly just bad speakers. Could also be that the speaker cord inside the laptop came unplugged from the motherboard. In which case you would have to take the laptop apart and plug it back into the motherboard.
I'd guess there is a jack socket 'audio in' somewhere on the montitor, probably on the back. (Don't confuse it with the headphone socket, which usually looks the same.) Connect it with a 3,5" stereo jack-jack cable to your PC's audio output.
it sounds like you may need to reset the nvram / pram on your computer.
If this doesnt not work, then you may need to reinstall the os. it's
known as an archive and install. Have you recently done any upgrades or
installs? Do you write music and may be using an external sound card?
you may want to go to system preferences, choose sound, and make sure
the onboard ins and outs are being utilized. but the fact that youre
not getting the proper on screen icon representing the sound level
would indicate and issue with the hardware engaging with the software.
Before you attempt the archive and install, I would make sure you have the most recent version of your OS....