Infinity bass link powered car audio subwoofer issue. Diagnosis

Watch as I diagnose this cheap (bought at an auction as is) Infinity self powered sub box. It worked for a few minutes and then nothing...
Let's see if we can get it going again.
I'll test the powers ground and then if that doesn't work, we'll do an autopsy.
www.amazon.com...

[@MWisz77]

I’ve had 2 of these and they both burned out after about 4-5 years of use. Just seems to be its lifespan