I am working on a Single Coin Bingo. Six card unit. 25 holes. The motor on the back door runs continually. Where do I start to get this corrected? I also found a burnt 25 ohm coil on a stepper unit.

Here are some photos. the coil that is fried is on the left stepper out of the pair that are side by side in line with the motor. thanks!

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i will have more photos sunday. your helps is awesome!

without the coil connected to the top two steppers the machine will register when a ball falls into any of the holes and lite the appropriate number on the card. getting three in a row or more does not register games (maybe I just need the coils). I am holding a good coil from the right stepper. I removed this to compare to the stepper on the left. burnt relay (resized).jpg. This stepper on the top middle looks like it is missing a relay and also a switch as the white gear has a post that would hit a switch after one full revolution.stepper missing parts (resized).jpg. The bottom six units work nice manually. bottom units (resized).jpg. Here is a photo of the "light box".light box (resized).jpg. here are some additional photos. I think we are getting close.sc6 (resized).jpgsc5 (resized).jpgsc3 (resized).jpgsc4 (resized).jpgsc2 (resized).jpgsc1 (resized).jpg

Great Knowledge, thank you