I have had 3 A2000, And everyone when I turned them on in the last place i lived, they died right away. Something in the power-mains killed I belive, the tick-signal. When I changed a jumper on the motherboard under the PSU, all A2000 came alive again. I have 11 amigas and several pc´s and other stuff. None have died like all my A2000 did. I am not sure if it was the ticksignal but it could be.