Headphone jack not working - Nokia Radio Communications

When you plug in the headphones, the jack itself routes the signal away from the speakers. When you unplug the headphones, the jack has contacts that close again, routing signal to the speakers. If the jack contacts are dirty, they won't close correctly. I suspect were you to clean the contacts, you'd solve the problem.

it shows that the headphone may gone bad, or the jack of your pc needs repair, check your headphone to some other computer if it ok then go for repair the jack from some qualified technician

This problem is common with a lot of MP3 players. It is caused by excessive movement of the headphone jack and causes the headphone jack has worked loose from the circuit board.
To fix this problem the MP3 player needs dismantling and the headphone jack needs resoldering onto the circuit board to get the headphone working properly.

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

Go into the case and unplug the frount headphone jack to enable the rear, some motherboards are particular on this issue.

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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)

I think you are on the right track, if the headphone jack is worn and shorting out itll kill the speakers because it thinks headphones are plgged in, ebay would be a good start for parts, maybe even call toshiba and speak to their tech support.

look at the headphone jack, if it has 3 band, it is a stereo jack. the computer is mono.
you need a 2 band jack.
if you look at the jack on the computer, you will see blue(left) and green (right). you canna try to use the green jack.
go to any electroic shop and get a stereo to mono converter.

If you have a headphone jack at the front and the back, it may be a wire to the front panel is not connected properly on the Motherboard.

Replace the player - there is no repair for this