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Basic Bachmann "DCC On Board" fails to respond...tips?
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<p>Hello,<br />With 50 locos to put decoders in, they are not all going to get the Cadillac treatment...so I thought I could use the 6 Bachmann SD40s with DCC onboard just as they are. Well, I would like to alter some CVs but I can't access them!</p><p>(I have the page from http://www.bachmanntrains.com/home-usa/newez/1_Amp_Decoder_Instr.pdf regarding the CVs for the basic DCC onboard decoders. And I know that the bit numbers are not right in the example on the PDF and have to be considered 0 to 7 instead of 1 to 8)</p><p>.....but when I put any one of my Bachmann DCC onboard decoders on the programming track to program in service mode with my Digitrax Zephyr, I just get the "dnd" error which means no decoder is recognized.</p><p>Yet the programming track works with other decoders and the the locos in question all work with address of 03 and other factory defaults.</p><p>What gives? Any tips on getting access to the CVs on these basic DCC onboard decoders...with a Zephyr?</p><p>If I can't get them to respond at least to change the loco address I guess I will put the loco specific NEC replacement decoder in all of them.</p><p>Thanks to anyone with experience who cares to answer.</p>
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