TMCC Command Base not working

nwfan1OGR Forum Member

I have a TMCC Command base with the following:

- post on command base is hooked to U side of transformer & original 12VAC power supply is connected

- green power indicator is lit

- red signal indicator flickers as expected when cab 1

- when power is applied to rails, locos start in conventional - apparently no tmcc signal is present

- crystal has been removed/reinserted (leads are clean)

- opened unit and no obvious failed components on board and all solder joints appears intact

Thoughts? Troubleshooting options?

Thanks.

4/20/1912:05 PM

Original Post

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