I recently purchased a new (out of box) head unit off of ebay,
link to the head unit purchase...
Kenwood KDC BT755HD in Dash CD Receiver Out of Box KR15 019048203182 | eBay
I installed it about a week ago (the day after I got it) using basic crimps on my Honda metra adapter harness (its about 1 year old and has been used on my past sony and xo vision head units). After about 12-24 hours I will go to turn on my car and the radio will randomly not come on, completely dead. I thought it was a power/ground issue at first, I unplugged the harness from the radio inspected everything including the fuse and it looked good. Plugged it back in and it worked, until another 12-24hrs passed and it did it again. I tried the reset button behind the face this time and it started working again... going through the demo off, bass, mid, treble, bluetooh>all speakers> clock adjustment>color adjustment annoyance every time. It continued to do this over and over. I finally was so irate I pulled out my power probe and verified sufficient voltage and ground going into the head unit when it "defaulted" and did not power on. I tried the power button, remote power on, removing the face, ect. I then thought possibly the amplifier signal wire, so I wired that into the unused illumination wire from my metra harness since I normally drive with my headlights on, still no solution. Is there anything else to do or check? I really like this radio and don't want to hassle the seller if its my fault.