Repairing PC speaker

I have an audio amplifier speaker like the one pictured in the conversion below:

http://mightyohm.com/blog/tag/wireless/

It does not work, need help in troubleshooting this one.

Disconneced AC power and connected a battery to the terminals - no sound.

 

On Thursday, March 31, 2016 at 5:31:23 PM UTC+5:30, gehan.am...@gmail.com wrote:

I have an audio amplifier speaker like the one pictured in the conversion below:

http://mightyohm.com/blog/tag/wireless/

It does not work, need help in troubleshooting this one.

Disconneced AC power and connected a battery to the terminals - no sound.

Will post pictures