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Need some help on this accessory; the car shuttle goes around the track and the relay arms will click; the shuttle will not stop at all; there are no announcements and only the markee light comes on; the car was door does go up and down; there is no smoke.  Was fortunate to find a replacement board; installed it and same symptoms.  Any ideas from anyone who has experience with these?  What to look for and what to adjust; many thanks for the help; Falcon70

Last edited by Falcon70
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It sure sounds like something is stuck. Very basic system inside. When conditions get met, the car moves to the next point.

I bought one that was broken. I had to dismantle it, sand and lubricate the main wheel to get it to spin freely. It kept getting stuck.

All the switches inside worked great. Every once in a while it goes around silent, when power is applied. I believe it's from something out of sync. I also believe that what you're seeing!

Last edited by Engineer-Joe

The limit switches don’t like to open/close/open and so on during the cycle.  I learned that on my gas station.  Somehow I think the board or program switch gets confused.  That really is the only input/output.  You might apply jumpers after you take it apart.  I recommend ordering switches prior, as they a not to expensive and will work on other MTH stuff of that ilk.  Just my thoughts.

Got it workng now; "stupid is as stupid does" in the that I was holding the activation circuit closed; it is a MOMENTARY activation!  Duh!  Smoke unit was belly up; motor ran but no air flow.  Found some white silicone sealer between smoke PCB and impeller housing; stopped fan rotation; cleaned the residue from bottom of PCB and replaced the impeller; smokes like crazy now on the wash cycle.  Thanks for the idea the control board needs time to process the micro switch inputs; good to go; Falcon70

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