Asus x50SLseries my audio jack not working:

IF the head phone jack works and the speakers don't then the issue is the jack. The jack disconnects the speakers when the headphones are plugged in. I have seen the jacks get the connections bent out of place by having pens and other objects stuck in the head phone jack. Ignore the subwoofer it is on its own circuit,

If you don't plan on using the headphones - take the cover off and there may be a cable to the headphone jack board that can be unplugged. This will disable the headphone jack from sending a bad signal to the micro. If you want to be able to use the headphone, then the jack is going to have to be replaced.

The socket for the jack on the set has a leaf connection that when you insert the jack moves aside routing sound to head phones and cutting it off to speakers= the socket for the jack is out of position inside, either needs to be replaced or tweaked inside just a little.

Not much else can cause this if the headphones work.

ibm sound card is not faulty, because you are getting sound with your head phone. The head phone jack have two functions 1. to give output to head phone 2. to disconnect internal speakers when you plug in head phone.
The jack for headphone in normal position not give connectivity to internal speakers.
SOLUTION : REPLACE THE HEADPHONE JACK.
I think it will help you.

there is a black headphone jack just above the green one... try that one. also, try to plug in the jack and then turn on the monitor...

Turn off ur tv.Tries take the head phone steal jack plug it in and unplug it out do this like three or four times.Tries the tv menu audio resetting again.The audio should return.Don't used ur tv head phone again the input jack socket it have problems,just lower ur tv volume for not to annoy anyone.Or used the tv head phone jack socket again will damage it for good, and will never get sound out throught ur tv speaker again.

Yes. That's how all headphone jacks work. In = no speakers.

If the rest of the laptop works and you can still hear audio through the headphones. Buy and replace the speaker:
https://en.accessoires-asus.com/?gclid=EAIaIQobChMI27rs6-ba2AIVDrvtCh0y-wwhEAAYASAAEgLRbvD_BwE
If not it might be the power supply and that would explain the jolt and the red beam.

I agree with Solution 5. The copper pins in the jack that make the connection to your headphone plug are bent in such a way that they are springy and will make a good tight connection to the plug. When those copper connections get worn, they are not so springy and they bend inward causing you to lose audio on one side of your headphones unless you wiggle the plug and find that sweet spot that makes a connection. Then you have to hold the wire to keep pressure on it... it gets annoying.

You can open the case and there are slots in the headphone jack that you can get a hook scribe (like the dentists use) or safety pin to bent those copper connections back out. Don't bend them too far or they will break. You can also pick get a new part for $25 or a used part much cheaper. Once you iPod is open, it's a matter of a couple screws and a ribbon cable to replace the jack. Problem solved!

I had a similar problem and solved it by simply blowing in the headphone jack (h/p input).