I dusted off my an old rack that's been stored for several months and plugged in my Furman to check if everything was kosher. When it comes on I hear a "pop" and then a puff of smoke from the left side of the unit. I turn it off and on again and hear a "pop" and then smoke from the right side. The lights now do not work. I changed the bulbs even though the originals did not look blown. Still nothing. I tried the circuit breaker with no results but I think I did something permanent to this hunk of garbage. Any thoughts on what that might be?