Mission e8as1 sub stopped working

[amgmaj]

Hi Members hope you can help my mission e8as1 subwoofer all sudden stopped working today but the power light does still change from red to green but no movement on the sub i've changed both the power and sub cable but still no good and i've tried my other sub on the same amp and that works fine with same cables.
I can hear a click when i power it on.
Hope all this make's sense.

Thanks

Maj

 

[amgmaj]

Tried my subwoofer yesterday and guess what it started working so all good again

 

[amgmaj]

Not working again, tried the sub today only worked for about 3 minutes any help out there please?

Thanks