Scratching my head and need some help:

I've got a TRONLE, and the orbit post behaves oddly (had been working fine).

When I test in solenoid test, it simply fires once, which I suspect just identifies if it's working or not.

During plunge, the post is supposed to stay up, but if you hold the left flipper button, it will release and go down.(normal operation).

What mine is doing: Post will go up, but then release and go back down within 2 seconds, without me touching the flipper. If I plunge the ball with flipper button held, the post stays down. If I plunge and don't hold the button, the post comes back up after it rolls over the first switch.

Not exactly sure how to troubleshoot, fix this one. Hoping someone has experienced this, or can help point me in the right direction. Thanks....mark

bump for at least a guess.....