![magic-how-do-they-work[1].gif](https://o.pinside.com/6/05/71/605713387ca1071eeb0e98d81fe9d82fd27f541c.gif)
Key West, FL
First and foremost I've been working through this issue with Bob Parvin the creator of the NMP sensors. I have to say he has fantastic customer service, replies fast to my emails and has been very helpful. I also believe in his product and unless I find concrete proof, I don't believe it's his sensor system thats causing this issue. I'm not one hundred percent sure if this issue existed when I still had the original horseshoe style drop target sensors but regardless the issue exists now. I just wanted to make a topic in an attempt to bring more minds into this and help me along the way. I've done a small amount of troubleshooting, but am relatively new and I want to learn as much as I can/do things myself.
I installed his sensors in both GOR and GAR drop target banks, The GOR bank operates 100% as it should. The GAR drop target bank is reseting prematurely activated by the lowest pop bumper. The problem seems to lie with G/A targets. If either one is up by itself or both up with the R down and the lowest pop bumper is activated then the drop target bank will reset.
I went through solenoid test mode and all the solenoids activate independently as they should and correspond to their number designation. I went through switch test mode and all switches register to their correct corresponding number. Then soon after that the GAR reset solenoid no longer activated. I went back into solenoid test and still the GAR solenoid is dead. I then went further into the diagnostic mode to 03 where I discovered the following stuck switches 44-GAR series, 21-GAR series, 19-O drop target, 41-G drop target, 42-A drop target 18-G drop target.
For information sake I just recently had the boards gone through, and in addition my drop target banks are removeable via molex connectors.
