I was also looking for a replacement given my would not power on at all. I took it in the house and connected to a battery I had on my work bench and it was still dead (no red light on power button). I removed the back, top, and front. In the process I must have pulled on some of the board to board connections and suddenly it start working again. I have been listening to it for days now on my work bench. If you have a dead one it might be worth a try. You will see the unit is made up of 4 boards stacked vertically with white ribbon connectors from board to board as well as a black round connector. I do not know which one was the issue on mine. Guessing something was slightly corroded and me wiggling / pulling on them cleaned some contacts. These units seem high on features but low on quality so I am not surprised something worked loose.