A steady flashing light is most likely NOT a short,this loco DOES NOT have the diagnostic codes as Mike stated. I do recall another thread involving a "strobe effect" that could be inadvertantly turned on in certain Lionel products. There are reset instructions in the back of your owners manual,if that doesn't work I would send an EMAIL to Lionel customer service tech support. They wiull be able to direct you as far as any other resets.
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