Had a kenwood excelion x500-1 has been working good for years. Transfered over to this truck a 2003 silverado no issues for weeks. Today I had to pilot a wide load. I have power for the pilot sign, amp, and my vhf radio direct from top posts on battery. After a few blocks I could smell something burning was not a strong smell just faint. The radio was turned down or off cant remember so I could use the vhf so I did not notice the sub quit working. When I got back I poked around to see what happened. No fuses blown for anything including the ones in the amp itself and the amp would power on but no output. See attached pic for inside amp. Plugged in my old mtx amp and drove to stereo shop where I purchased. They said it was the incoming power possibly a dead short or over powered. Tested all my connections and ohms on the sub and everything was good. Plugged in pilot sign and ran truck for 10 min or so testing and all was good. All wiring is brand new and if it shorted I should have burns elsewhere or blown fuse. Probably would have blown the fuse in the vhf for sure... so was it just luck the amp died or should I keep investigating? I also contacted Kenwood via email and sent them pick as well just as a fyi as im not expecting any warranty and i have already replaced it with alpine. They were trying to tell me it was a under voltage situation and wanted me to ship it back on my dime so they could investigate and quote me on repairs.. Im 99% sure their was no under voltage issue as i have a gauge setup on the dash that gives me real time info and my voltage was always over 14v. Also if it was a under voltage my VHf would have went down and it was as strong as normal i can rx/tx farther than the other drivers in my group