Originally Posted by MitchX19H
Yes I am connected to a 30amp service at the camp site and have no power to the unit..
I havenít checked if it worked while connected to my truck.. never really needed it, I will check when we leave the site..
That would make me think there is a short in the power supply to the head unit, or a short connection inside the head unit. Shaking down the road is probably causing the intermittent nature. With the popping of the speakers, it would make me lean to a short internal to the head unit. The capacitors in the amplifier are possibly charging a bit and then collapsing when the power fails. Really, all just conjecture though.
If you have a DVM, you can check to see if 12V is present on the power lead at the back of the unit when it won't power up. That would probably isolate if the problem is internal or in the external wiring.
How long ago did you buy the HTT? 2018 might still be under warranty, or just out. Even if it is out, you might get a goodwill if you claim it started in the warranty period.