I have quite a strange problem with my pinball machine project. Please see the 2 links below for the power wiring/supply board schematics of my system.
Power Wiring Schematic
Power Supply Board Schematic
With nothing connected to the secondary of the transformer I draw ~450mA, which seems reasonable to me. With all fuses unplugged it only takes hooking up 3J1-12 to the power supply board and I draw 4A. This is a ground pin (center-tap of 2 x 9.3VAC) and I am getting crazy current consumption.
Originally the machine came to me with a cooked transformer, and I had recently replaced it. I'm guessing whatever caused the last one to go will soon take its toll on this one. Any ideas what might be happening? I am completely lost.
Thanks.
Power Wiring Schematic
Power Supply Board Schematic
With nothing connected to the secondary of the transformer I draw ~450mA, which seems reasonable to me. With all fuses unplugged it only takes hooking up 3J1-12 to the power supply board and I draw 4A. This is a ground pin (center-tap of 2 x 9.3VAC) and I am getting crazy current consumption.
Originally the machine came to me with a cooked transformer, and I had recently replaced it. I'm guessing whatever caused the last one to go will soon take its toll on this one. Any ideas what might be happening? I am completely lost.
Thanks.