Stereo has display but no audio after having a window tint done. Only 15k miles, doesn't seem old enough to have had any issues. I've seen where older HK amps were failing but saw no mention of it in the newer forums. 2014 MCS, HK stereo, not Mini connected.
-Silence is not golden-

 

Seems like it was a simple battery reset that fix the issues all fixed up now and music ready to roll

 

That was quick!