Dell Latitude E6410 Speakers

I have  a Dell Latitude E6410 and the speakers have ceased to work. No audio at all on the right channel and  intermittent distorted sound on the left channel. I believe this to be a hardware falt in the speakers.

Perfect audio from the headphone jack.

I have stripped the laptop and the left speaker appears to open circuit using a continuity tester. 

Any comments on my assessment.

Any ideas on source of speakers in NZ

Regards

Pual Greenwodo

ZL2GRE