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The Monorail Playset Motor Thread

droldz

New Member
Hello all,
This thread is very interesting but I bought a red one with non opening doors and I have something I haven't seen on any of the pics. Mine has a resistor (a large in physical size or a second capacitor???). Details are bought on Marketplace, didn't run, checked for voltage at board, good. Checked at motor, nothing. Checked resistance of the yellow thing (had heat shrink on it) 1Mohm, so I figured it's damaged because that would cripple voltage to motor. Not being a whiz I temporary disconnected capacitor and 1-3 vdc allows motor to spin. So, with that said what should I do (eliminate any component, replace or what)???? I bought it for a Christmas gift for a dear friend of mine that is a Disney FREAK. My email also is dave.mayhew@telesistech.com but I feel it's important to help others too, but this way you can reach me in a alternate way if need be. I don't want to fry the board. I will have to look at the LED's as they weren't working either. Should they be green or did someone do something. Were they green in real life, otherwise I may change and pretty sure I could almost run with no resistor with 3 vdc, would you agree? Thanks again so much for any and all that respond. I want to learn more about electronics as it's neat to modify things to correct problems as this thread has shown me. BTW, the only indication of year made was the fact of the $55.00 Disney sticker
 

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bobquincy

New Member
The little black wirewound cylinder (sometimes covered with yellow plastic) is an inductor that may be to suppress motor electrical noise and may act as a fuse if the motor shorts out or pulls too much current (which may be what burnt out yours). The inductance is too low for my meter to measure, maybe microhenries. This part looks like it although since I can't measure the inductance I don't know if it is a suitable replacement. https://www.digikey.com/product-detail/en/bourns-inc/5800-470-RC/M8286-ND/774826. The original inductor drops about 130 mV at 1 A.



Disney's Mark VII does not have an inductor since the solid state motor control does not need one. On most of my conversions I usually leave the part out since I also use solid state motor controls. It is probably ok to run without it but if the motor draws too much current the next thing to go is some wiring so I recommend installing some kind of circuit protection.
 

droldz

New Member
Thank you so much for the quick turn around on the info and going the extra distance to provide a link to the part you think may be a suitable replacement. Because of Christmas coming and I need to ship this to her, I think I will be looking for the electronics shop I know an hour away. Wishing you and yours a Merry Christmas and Happy New Year. P.S. Are the REAL monorails lights green if I was going to swap LED's to make it more authentic?
 

bobquincy

New Member
Thank you so much for the quick turn around on the info and going the extra distance to provide a link to the part you think may be a suitable replacement. Because of Christmas coming and I need to ship this to her, I think I will be looking for the electronics shop I know an hour away. Wishing you and yours a Merry Christmas and Happy New Year. P.S. Are the REAL monorails lights green if I was going to swap LED's to make it more authentic?
The real monorail headlights are white. Unfortunately the 2xAA batteries do not provide enough voltage to power white LEDs. However; I wrote an article on how to install white LEDs in a WDW monorail. http://monorail.suzieandbob.com/ho_headlights.html
 

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