DCC operation

[jetf14]

I have received great help from this forum. I am brand new at this train hobby. I successfully added DCC to my DCC ready Bachmann 4-8-2 heavy mt. However, when I turn it on, I get a loud humming noise from the engine. It goes away as it starts to move. I have one other engine that came DCC equipped and it does not make that noise. Any ideas as to the cause or is this normal? Thanks..Jetf14

[ACY]

It is likely normal, unless you installed a silent running decoder, your other loco may have a silent decoder.

[Joe323]

Personally I like the hum

[jetf14]

I used the Bachmann 44915. Thanks for the information. As long as the hum does not represent a condition that can cause damage, I'm OK with it.
jetf14

[jward]

my dcc onboard locomotives all do this. the ones i have installed my own decoders in don't buzz. the bachmann decoders are a very basic, low end decoder without many refinements.