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ROCO Z21 - Loco's buzzing...


Shedmaster
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Dear Forum, 

 

I am running a newly purchased ROCO Z21 ( Black Box). 

 

My DCC fitted Loco's emit a definate electrical buzzing sound, which didn't happen on my Bachmann Dynamis previously. 

 

I have just chipped/set up a Heljan Class 33 twin pack, so, in theory, the latest electrical versions and when I turn the lights on, this buzzing is exaggerated. 

 

Has anybody else noticed similar on their set up? Do I need to lower the track voltage or similar? 

 

Many Thanks, 

 

Kindest Regards, 

 

Shed. 

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13 hours ago, Shedmaster said:

Dear Forum, 

 

...

 

I have just chipped/set up a Heljan Class 33 twin pack, so, in theory, the latest electrical versions and when I turn the lights on, this buzzing is exaggerated. 

 

...

 

The fact that you have just put in the decoder suggest that this is where the issue lies - what happens with your other locos?

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  • 7 months later...

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