The speakers no long produce sound after using the headphone jack,,disconnected jack , still no sound

These are analog speakers and do not need a driver. First, make sure they're plugged into the speaker/headphone jack and not the microphone jack. Second, make sure the computer's sound output is enabled and set the headphone/speaker jack. Third, verify that the sound output is working by plugging in a headphone set or a different pair of speakers. If the computer sound checks out, the speaker cable is bad or the power supply is not working.

No the headphone jack doesn't disable the speakers. There are two switches in the lower middle of the receiver that are labeled speaker A and B. Pushing one of these should disconnect the speakers from the receiver.

andys_cars,

You may need to go into the sound properties and then to deviceto change the settings to enable the speakers and change it from headphones to speakers.

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Dell-Jesse L
Dell Social Media and Communities

If the head phone jack works its more likely to be the problem, if you use the headphone jack a lot the connections inside it can get worn or bent out of shape--engaging the headphone jack should shut the speakers in the unit off.

Other possible reason is a bad speaker or connections.

Some amps have a button which you press to mute the speakers when the headphones are plugged in. Sometimes marked "Speakers on off". If it hasn't then a new headphone socket would not be expensive to fit. As long as the amp producers sound I don't see any future problems. The previous owner may have used the headphone socket a lot, and simply wore it out!

Do these headphones work OK in another machine??

If not they are faulty / If so then sound port may be faulty.
'Ensure it is enabled in BIOS. press DEL key when booting and look for similar.

Contrary to what's posted above, the Marshall MG series does not pass the speaker power output through the headphone jack, and inserting the headphones into the jack does not disable the speaker. The headphone amp is a separate circuit and it's input is taken before the master volume. So Jan's post is exactly right. Turn off the master volume and turn up all the other gain/volumes as high as they will go. The other issue is that the headphone jack's output does not drive low efficiency headphones well, so you need some headphones similar to Sony's MDR-V700s to hear it well. Earbuds just don't cut it.

reinstall ur sound and video program

Connecting headphones to the system will disabled the internal speakers until the headphone jack is disconnected, at which such time the internal speakers should function again.

If you disconnect the headphones and the internal speakers are not re-activated, then there may be damaged to the microswitch in the jack. (Try rebooting after the headphones are disconnected too)

Try plugging and unplugging a pair of headphones. The headphone jack in these receivers are flaky and sometimes think there are headphones hooked up even when there isn't. Full repair would require the headphone jack to be replaced. If you don't use headphones at all, you can take the top cover off and unplug the cable going to the headphone jack board and eliminate the problem that was as well.