Shooter- I have owned many Angels, and have a 2k3 LCD LE and a 99 LED right now. The Dark actually didnt come with a charger, had to use the one from the LE. it does not say tab in or need a pin, it doesn't display anything at all on the lcd.
Gainman- I believe this is the issue. I will try the battery from the 2k3 (which i also had to replace originally...) to try and narrow down the issue to a battery one. First, I will try the exact plug/unplug/on/off procedure you mentioned. I am seriously considering dropping in a pm7 virtue board since you can get those for 35$ new right now, or maybe a hater board (same price).