Yes I do have the schematic. Thank you.
When I hooked the Melco up I followed the instructions on the label. There were 3 power supplies listed. The signal supply which I have to the lamp supply for blue wire buzzers. And then two more inputs that are labeled A battery and B battery so that's what I hooked them to.
So basically what we are saying here is that both should be connected to the A battery supply correct?
