No audio on my DVD player?

Hi my DVD player plays the video no problem but there is no sound, it worked before perfectly. It was only cheap and I am fully aware that I can buy another for less than 20 quid. However, if it can be repaired I'd like to give it a whirl!!
Any clues guys?

TIA

Lee
 
Hi, sorry not been on for a while, how would I check the settings, there are input/output ports only nothing I can physically change, do you mean within the onscreen menu?
 
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