Quoted from cleland:I don't think having LED's generates a credit dot. It does tell you how many lights are out when you go into diagnostics though. Mine shows no credit dot but says 22 bulbs out in diagnostics...which is exactly how many LED's are in mine.
Mine has full LED's and it does show a credit dot. I bought mine from Pinballx and he had told me that having the LED's will do that. So, now I wonder how many of us do have credit dots on our pins who have LED's installed?