My Pinbits ramp mod is suddenly not working. I'm not sure how to go about testing it at all. I'm not sure in the menu diagnostics what I can go into to check or force it to light up. I am getting not light at all suddenly and I'm not aware of any changes other than putting in some new playfield bulbs (machine wasn't on and the bulbs aren't close to the 2 blue modules under the playfield)..... Help!!