Quoted from aobrien5:
If you're not still getting the lamp interference in test, it should be fine. I have all LED GI in mine. Which gate is opening during play, the left or right? Make sure you're checking the left pocket optos, too. Also, make sure all your trough switches are ok, and you have the "reverse flow" gate in the trough (or whatever you want to call it).
Quoted from mcclad:
I was having the same problem and it was the switch in the ball trough for the first ball in the trough.
Thanks for the feedback guys.
The right gate is the one that opens most of the time and then I often here the motor running again while mist mball is active, the left gate opens sometimes too but its almost always the right gate, the left pocket opto tests fine, reverse flow gate is there, i did find that the Trough Ball 1 switch would stay closed on occasion which, to my excitement, i thought maybe was the problem. But to my disappointment, i then fired up a game and sure enough i started mist on ball 3, drained one of the balls, and then it gave me a game over.
I have found that the long opto switch, ("ball on magnet", #82), is extremely flaky in test, i wave my hand through the middle of the playfield and the switch opens, but after removing my hand the switch stays open, it will close if i give the playfield a slap. I have checked the receiver and transmitter with a tv remote and camera and they are testing fine there. I am going to assume I either have an alignment problem or some kind of power/voltage problem? I checked the opto board and it looks clean with the L1 inductor intact.
Does this sound familiar to anyone? Or does anyone have experience aligning the optos? That pinballrehab.com describes it like this "It can be adjusted by loosening the three screws holding it in place and sliding the white case towards the front of the game." So i think this is what i will try next.