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Reply to "MTH PROTO 3.0 STEAM UPGRADE AND SMOKE FAILURE"

John,

I just tested the smoke motor leads for continuity to ground (with the tender plugged into the loco and and no power) and found continuity which fades out to an open circuit over a period of 3-4 seconds. After disconnecting the Multimeter probes and waiting 30 sec. +/- this can be repeated 3-4 times before it goes to a continuous open circuit.

I also checked the resistance across the smoke fan motor only and it measured 11.8 ohms.

Does this info. lead you to any other thoughts or suggestions or would the next step be to have you test the board?

Below is a photo of the boards as installed in the tender (just wanted to make sure we are on the same page with the type of boards we are talking about)



proto 3 upgrade

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  • proto 3 upgrade

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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