No sound through speakers but headphones working

Hello Everyone,

My PC has no sound through speakers but headphones are working fine. I checked all wire connection but not sound in speaker but when I increase the volume too high i could here the sound lightly.

What could be the problem. I am using mercury speaker with woofers 980w.

It has inbuilt FM radio and amplifier and FM radio is also working fine but when I play movie songs stored in my computer or watch online the speacker does not function so I have to use headphones.

Please help me inthis regard,

Thank you
Lekha.
 
Did those speakers ever work?

If so, did the speakers quit working after using the headphones?
 
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