I recently purchased a Bachmann E-Z Command power supply with a DCC loco ready to roll.  Now I in countered a problem and I'm wondering what's the best option.  I was able to program the train to #1 and I can even turn the lights off and on, but I think the control speed knob is defective.  I can't get the train to go forwards or reverse.  I disconnect the new DCC E-Z Command power supply and hook back up the old DC power pack and the train runs fine.  So I know the train is good, I've checked my tracks with my volt meter and I have power at every section.  I really think the control speed knob is defective.  Now do I fill out the warranty card and then wait to send the power supply in or do I take it back to the store I purchased it from?  They don't have any more of these E-Z Command power supply's.  I bought the last one.  Maybe Bachmann can help me out on this question. 

Best Regards,

Jason