No sound from headphones connected to speaker

Normally , you would expect the TV sound to stop when headphones are plugged in. Obviously not in this case. If you have a set of headphones, try them and see if the TV still has speakers on. If it does, then there may be a setting on the setup of the TV to get headphones to work. If the TV speakers stop, then I would think that the Logitech are not compatible with the TV. The only other thing would be is to get into the TV and disconnect the TV,s own speakers. If the wires are soldered on and not terminal connected, carefully cut 1 of the wires off near the speaker. If 1 wire is cut, the speaker wont work. Make sure both the TV and the additional speakers (If they have their own power supply) you are using are unplugged from the power before you go doing this...!

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.

Hi,

I find that there is a problem with your headphone speaker.
Try with some other headphone, even if it is not working, then you need to take it to the service center.



Cheers,
Mr.Maduraikaran.

The problem is in the earphone jack, when you plug headphones into the jack it dis-connects the internal speaker. Since you can hear the sound through the head gear, it indicates the jack is defective and needs to be replaced, or it needs a good flushing of electronic contact cleaner, attach the supplied straw and aim it in the jack and spray, next take the headphone jack and push it in and out quickly, repeat the process three or four times, If this fails the laptop will need to be dis-assembled for continued repair.

The headphone jack on the TV has switch built-in to kill the TV speakers when headphne jack is used, you need to use powered PC speakers with headphone jack and connect this PC speakers to the Audio line out of the TV set (RED and WHITE RCA audio line out). Basically the powered PC speakers are being used a headphone driver. Or you can get one of those wirless headphone system instead.

check first you headphone jack speaker. if its working well, then the line from phone jack male to speaker continuity.

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.

I would say it is because the unit does not have a built in amplifier. The speakers are powered PC speakers of studio monitors I am guessing. Try plugging the headphones into the headphone jack of the speakers if they have a headphone jack or try a set of powered headphones out of the Edirol and see if it helps.

That should remedy the problem.

I have the same problem and just figured it out. Go to the sound settings and set the earphones as the default. I just did this and it now works.

No need to plug into the back jacks on the TV or change the out put of the tv audio source to the Front jacks