MTH Old Style Smoke Unit | O Gauge Railroading On Line Forum

gibson manOGR Forum Member

If the heating elements fail open will the blower motor still run? I have the unit out and apart. Replaced motor and wick, but no smoke and motor does not run...

12/21/133:26 PM

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GGGOGR Forum Member

Yes. When you power up the unit, measure the voltage at the plug the fan motor connects to. Should read 5V (or use a bulb). May be the voltage regulator failed. That can be replaced. G

12/21/133:44 PM

gibson manOGR Forum Member

Is the regulator the first component that sees power? Is passing about 2 volts at wide open throttle...do you have any idea where i could send this for repair?

12/21/134:27 PM

gunrunnerjohnOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

There is a bridge rectifier and capacitor in front of the regulator.There are also a handful of other components that regulate the voltage going to the two smoke resistors.

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12/21/135:01 PM

GGGOGR Forum Member

You can send it to me, I have the parts in stock to rebuild it. My e-mail is in my profile. G

12/22/137:39 AM

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