Quoted from Litedpinballmods:If you could turn the pedometer, and it got to work at some level, I would feel everything is working fine. defenatly can be fine tuning by putting in to different places in the game. If you want simple on and off as the game turns on and off, I have hound putting the light sensor in the back box, with the senor facing you main light. When you get the green light on, slowly turn it till the green lite turns off, then reserve Indira do the green light is on and you should be good.
If you are putting the sensor under the play field you will have more possibility. Difference of LED's or original, the number and color of lights can all impact placement. At the lost show the person next to us had a tron. My partner Chuck Norris in stalled it in the game by putting the sensor next to the coil door look and it worked perfect, on all of the time. The owner change some of times on that game, and the sensor fell, and as some lights turned on and off, they turned on and off the hinges, I change that by tiepin the wire to something in the bottom of the game and they went to on all of the time
Many things can change performance, having the sensor close to a large group of lights can also help the settings. The wire is over 30" long so you can put it any place in the game.
A bit more expatriation and you should get it.
Thanks for the detailed response. I have found that the only way I can get the hinges to light up is to crank the potentiometer all the way down (or up, depending on how you want to say it). My testing has been with a bright LED flashlight shining directly on the optical sensor, so there's no room for doubt about the light being bright enough. If I back off on the potentiometer even a tiny bit, the green light on the board goes off and the hinge won't light up no matter how bright the light is shining on it.