I recently purchased Theatre of Magic in really good shape, but half the backbox lights won't come on. Actually none of them worked, but I found a two pin connector that was shorted, fixed that and half the lights came on. On what I think is the motherboard (at least the board with the Motorola processor on it), the middle of the three stacked red led's on the left hand side blinks rapidly, D-20. The bottom one glows solid, the top one D-19 is not lit. There is a row of red mini switches under that, all are switched to the down (on?) position except for the first two--which I think are labeled W11 and W12.